Partial joint type full denture having adjustment of arch and occlusal curvature

Abstract

Provided is a partial connection type full denture that is short in time and efficient in production of a denture that is coordinated with the chewing movement of various patients, the tissue around the mouth, and the face, is aesthetically pleasing, and has a high-quality occlusal relationship. The partial connection type full denture of the present disclosure is pre-connected and fixed in an appropriate occlusal relationship, appropriately defines the sites that can be standardized and the sites that should be separated, and in the region in which the artificial teeth contact each other, appropriately defines the combination of the region of the abutment surface that constitutes the contact region and the angle of the contact region with respect to the virtual occlusal plane of the denture and the area thereof.

Description

Technical Field

[0001] This invention relates to a technique for the fabrication of prefabricated artificial teeth for use in dentures, and particularly to a technique for the fabrication of dentures using CAD (Computer Aided Design) / CAM (Computer Aided Manufacturing) techniques. Background Technology

[0002] In the field of prosthodontics, where artificial teeth are used to restore occlusal function in the fabrication of dentures, they primarily serve as the main components for restoring occlusal function when replacing lost teeth. In the fabrication of dentures using conventional methods, artificial teeth are implanted into a base made of wax, a combination of wax and resin, and subsequently, the wax is replaced with resins such as acrylic.

[0003] On the other hand, as shown in Non-Patent Document 1, the ridge morphology of patients with dentures has increased due to the results achieved since 1989 with the 8020 Movement promoted by the Ministry of Health, Labour and Welfare and the Japan Dental Association. Furthermore, based on the needs of patients who wish to avoid extractions, the fabrication of large dentures, such as complete dentures, has become difficult. As a result of delayed extractions, the ridge morphology of these patients, especially in the mandibular ridge, is characterized by the resorption of the jawbone into a flat or boat-bottom shape, which is referred to as a difficult case. A ridge morphology with significant resorption is less resistant to lateral forces generated during chewing, making dentures more prone to dislodgement. For suppressing denture tilting with such a ridge morphology, an artificial tooth shape that is less prone to lateral stress during chewing and has small cusp inclination and cusp spread angles is preferred. Furthermore, in patients with unstable jaw positions or irregular tapping points, using artificial teeth with large anatomical morphology for cusp incision would restrict chewing movements, making them very difficult to use. In such cases, the use of edentulous canines, which lack cusp incision, is effective. Additionally, for patients requiring care, where precise occlusal sampling as performed in the clinic is not feasible, the use of edentulous canines is effective. However, in Japanese dental universities, dental students are not given detailed training in the use of edentulous canines in complete denture treatment. Furthermore, previously provided edentulous canines were individual teeth, requiring complex procedures to align the occlusal surfaces of the molars with the occlusal plane to avoid gaps.

[0004] Furthermore, in recent years, computer-aided design (CAD / CAM) technology has been commercialized for designing dentures. This CAD / CAM method involves designing the overall shape of the denture, then outputting data for the denture base (excluding the portion containing the implanted artificial teeth) to an NC (Numerical Control) machine or 3D printer. The denture base is then fabricated using machining and layering techniques, and finally, adhesives are used to bond the finished artificial teeth to the implanted portion. However, current denture design processes (CAD) simply convert the complex denture design methods of the past into computer-based processes. More specifically, similar to previous fabrication methods, the shape and size of the artificial teeth are selected based on anatomical indicators used to determine the placement of the artificial teeth, based on the patient's individual jawline shape. For each tentatively configured artificial tooth, the placement and occlusal contact are adjusted on the computer to reproduce an appropriate occlusal relationship. This process heavily relies on the operator's experience and skill in terms of both fabrication efficiency and denture quality. Furthermore, even when the denture design is completed despite improper alignment, it is very difficult to make appropriate use of the morphological characteristics of artificial teeth to create a highly functional denture by performing significant cutting and adjustments after the denture is completed.

[0005] For the denture manufacturing process (CAM), the introduction of milling machine-based cutting and 3D printer-based layer-by-layer modeling automates some processes, reducing the burden of manual processes such as resin bonding of denture bases. However, as a result, the complexity and amount of engineering involved in the computer-aided design (CAD) stage, as well as the burden of correcting occlusal errors arising in the subsequent bonding of the denture base to the artificial teeth, outweigh the advantages of automated CAM. Therefore, the labor-saving aspect of denture manufacturing, originally expected from CAD / CAM technology, has not been achieved.

[0006] Patent Document 1 discloses an example of a denture manufacturing method implemented by the aforementioned CAD / CAM. Patent Document 1 discloses a method for model-manufacturing a denture comprising a gingival portion and an artificial tooth. The denture manufacturing method described in Patent Document 1 includes: a stage of providing 3D scan content including at least a portion of a patient's oral cavity; a stage of virtually modeling at least a portion of the denture using the 3D scan content; a stage of obtaining virtual teeth representing the artificial tooth; a stage of virtually modeling at least one of the virtual teeth to obtain a set of modeled virtual teeth; a stage of manufacturing the modeled virtual teeth from a first material; a stage of manufacturing the gingival portion from a second material; and a stage of manufacturing at least a portion of the denture using a computer-aided manufacturing method (CAM).

[0007] Patent document 2 discloses a unit artificial tooth, characterized in that, in order to simplify the arrangement of artificial teeth, the proximal surfaces or base surfaces are connected by a soft connecting material, and after the artificial teeth are assembled, they are firmly fixed by methods such as photopolymerization.

[0008] Patent Document 3 discloses a connecting tooth for a temporary prosthesis of a denture or implant. The connecting tooth for a denture described in Patent Document 3 is connected by a connecting material, and like Patent Document 2, it is designed to allow multiple artificial teeth to be arranged together when the artificial teeth are fixed to the denture base.

[0009] Patent Document 4 discloses a movable connecting artificial tooth. The movable connecting artificial tooth described in Patent Document 4 is formed individually and includes: all artificial teeth of the maxilla or mandible; and a connecting material that arranges all artificial teeth into a fixed dentition, and the connecting material has plasticity that allows each artificial tooth to move from the dentition and stop the artificial tooth at the position it has moved to.

[0010] Patent document 5 discloses an artificial tooth assembly for the molar portion, which is connected and fixed with artificial teeth corresponding to the maxillary second premolar and the maxillary first molar, and specifies the occlusal surface, occlusal plane, and occlusal contact area.

[0011] Patent document 6 discloses a method for connecting artificial dentitions, used in the upper structure of an implant restoration device, and which is composed of multiple artificial teeth.

[0012] Existing technical documents

[0013] Non-patent literature

[0014] Kaoru Sakurai, *COLOR ATRAS No. 47: Gerontological Dental Care Based on Promoting Healthy Lifespan and Interdisciplinary Collaboration*, Matsukaze Co., Ltd., February 2018, pp. 110-117.

[0015] Patent documents

[0016] Patent Document 1: International Publication No. 2012 / 041329

[0017] Patent Document 2: Japanese Patent Application Publication No. 58-180141

[0018] Patent Document 3: Japanese Patent Application Publication No. 6-261917

[0019] Patent Document 4: Japanese Patent Application Publication No. 8-80306

[0020] Patent Document 5: Japanese Patent Application Publication No. 2001-137261

[0021] Patent Document 6: Japanese Patent Application Publication No. 2017-176486 Summary of the Invention

[0022] The problem that the invention aims to solve

[0023] The problem this invention aims to solve is to produce a denture that is aesthetically pleasing and has a high-quality occlusal relationship that is coordinated with the chewing movements, perioral tissues, and appearance of various patients in a short time and with high efficiency.

[0024] Solution for solving the problem

[0025] As one aspect of the present invention, a partially connected complete dental prosthesis (100) is a partially connected complete dental prosthesis (100) with adjustable dental arch and occlusal curvature, comprising:

[0026] Partially connected complete dental prostheses for the maxilla (U1); and

[0027] Partially connected complete mandibular prostheses (L1) are used.

[0028] The maxillary partially connected complete artificial tooth (U1) has the following characteristics:

[0029] The maxillary anterior dental prosthesis (10U) has eight parts centrally connected and fixed to the left and right sides of the maxillary partially connected complete dental prosthesis (U1): the maxillary central incisor part (1U), the maxillary lateral incisor part (2U), the maxillary canine part (3U), and the maxillary first premolar part (4U); and

[0030] The maxillary occlusal central group artificial tooth (20U) is connected and fixed to the maxillary second premolar portion (5U) and the maxillary first molar portion (6U) on the right and left sides of the maxillary partially connected complete artificial tooth (U1), respectively. The maxillary occlusal central group artificial tooth (20U) is also connected to the maxillary anterior group artificial tooth (10U).

[0031] The partially connected complete maxillary prosthesis (U1) is configured such that, on the right and left sides of the partially connected complete maxillary prosthesis (U1), a single maxillary prosthesis (30U), including the maxillary second molar portion (7U), can be joined to the maxillary occlusal center group prosthesis (20U).

[0032] The partially connected complete mandibular prosthesis (L1) has the following characteristics:

[0033] The mandibular anterior dental prosthesis (10L) is centrally connected and fixed to the mandibular partially connected complete dental prosthesis (L1), comprising eight parts: the mandibular central incisor part (1L), the mandibular lateral incisor part (2L), the mandibular canine part (3L), and the mandibular first premolar part (4L), located on both sides; and

[0034] The mandibular occlusal central group artificial tooth (20L) is connected and fixed to the mandibular second premolar portion (5L) and mandibular first molar portion (6L) on the right and left sides of the mandibular partially connected complete artificial tooth (L1), respectively. The mandibular occlusal central group artificial tooth (20L) is also connected to the mandibular anterior group artificial tooth (10L).

[0035] The partially connected complete mandibular prosthesis (L1) is configured such that, on the right and left sides of the partially connected complete mandibular prosthesis (L1), a single mandibular prosthesis (30L) including the mandibular second molar portion (7L) can be joined to the mandibular occlusal center group prosthesis (20L).

[0036] The distal surface (4dU) of the maxillary first premolar (4U) is provided with a region formed by two cylindrical surfaces, which intersect the virtual occlusal plane (P1) of the denture at different angles on the occlusal side and the abutment side, respectively.

[0037] The mesial surface (5mU) of the maxillary second premolar (5U) has a region formed by a cylindrical surface. When the tooth has a cusp, this cylindrical surface is orthogonal to the surface (P2U) formed by the buccal and lingual cusps of the maxillary second premolar (5U) and the mesial-lingual cusp of the maxillary first molar (6U). When the tooth does not have a cusp, it is orthogonal to the occlusal surface (P2'U) of the maxillary second premolar (5U) and the maxillary first molar (6U).

[0038] A contact area is formed in which either the occlusal cylindrical surface or the basal cylindrical surface of the distal surface (4dU) of the maxillary first premolar (4U) contacts the mesial cylindrical surface (5mU) of the maxillary second premolar (5U).

[0039] The distal surface (4dL) of the mandibular first premolar (4L) is provided with a region formed by two cylindrical surfaces, which intersect the virtual occlusal plane (P1L) of the denture at different angles on the occlusal side and the abutment side, respectively.

[0040] On the mesial surface (5mL) of the mandibular second premolar (5L), there is a region formed by a cylindrical surface. When the cylindrical surface has a cusp, it is orthogonal to the surface (P2L) formed by the buccal and lingual cusps of the mandibular second premolar (5L) and the mesial-lingual cusp of the mandibular first molar (6L). When the cylindrical surface does not have a cusp, it is orthogonal to the occlusal surface (P2'L) of the mandibular second premolar (5L) and the mandibular first molar (6L).

[0041] A contact area is formed in which either the occlusal cylindrical surface or the basal cylindrical surface of the distal surface (4dL) of the mandibular first premolar (4L) contacts the cylindrical surface of the mesial surface (5mL) of the mandibular second premolar (5L).

[0042] In the maxillary partially connected complete dental prosthesis (U1), when the occlusal surface of the distal surface (4dU) of the maxillary first premolar (4U) contacts the cylindrical surface of the mesial surface (5mU) of the maxillary second premolar (5U) to form a first contact area (f1), in the mandibular partially connected complete dental prosthesis (L1), the basal surface of the distal surface (4dL) of the mandibular first premolar (4L) contacts the cylindrical surface of the mesial surface (5mL) of the mandibular second premolar (5L) to form a second contact area (f2).

[0043] In the maxillary partially connected complete artificial tooth (U1), when the cylindrical surface of the distal surface (4dU) of the maxillary first premolar (4U) contacts the cylindrical surface of the mesial surface (5mU) of the maxillary second premolar (5U) to form a third contact area (f3), in the mandibular partially connected complete artificial tooth (L1), when the cylindrical surface of the distal surface (4dL) of the mandibular first premolar (4L) contacts the cylindrical surface of the mesial surface (5mL) of the mandibular second premolar (5L) to form a fourth contact area (f4).

[0044] Invention Effects

[0045] According to the present invention, dentures that are aesthetically pleasing and have a high-quality occlusal relationship can be fabricated in a short time and efficiently, in harmony with the oral perioral tissues, chewing movements and facial appearance of various patients. Attached Figure Description

[0046] Figure 1 This is an observation diagram of the occlusal surface of a complete set of artificial teeth with partial connection between the upper and lower jaws.

[0047] Figure 2 This is an enlarged view of the contact area of ​​the mandibular partial-connection type complete artificial teeth.

[0048] Figure 3a This is a magnified view of the contact area from the side (without applying forward or backward bending).

[0049] Figure 3b This is a magnified view of the contact area from the side (when applying forward and backward bending).

[0050] Figure 4 These are side views of artificial teeth in the upper and lower jaws (morphology of teeth without cusps).

[0051] Figure 5 These are side views of artificial teeth in the upper and lower jaws (with tooth cusp shapes in both jaws).

[0052] Figure 6 These are side views of artificial teeth in the upper and lower jaws (the upper jaw has cusps, the lower jaw does not).

[0053] Explanation of reference numerals in the attached figures:

[0054] U1: Partially connected complete artificial teeth for maxillary use;

[0055] L1: Partially connected complete artificial teeth for the mandible;

[0056] 1: Central incisor region;

[0057] 1U: Maxillary central incisor region;

[0058] 1L: Mandibular central incisor region;

[0059] 2: Lateral incisor region;

[0060] 2U: Maxillary lateral incisor region;

[0061] 2L: Mandibular lateral incisor region;

[0062] 3: Canines;

[0063] 3U: Maxillary canine region;

[0064] 3L: Mandibular canine region;

[0065] 4: First premolar region;

[0066] 4U: Maxillary first premolar region;

[0067] 4L: Mandibular first premolar region;

[0068] 4d: Distal surface of the first premolar;

[0069] 5: Second premolar region;

[0070] 5U: Maxillary second premolar region;

[0071] 5L: Mandibular second premolar;

[0072] 5m: Mesial surface of the second premolar;

[0073] 6: First molar region;

[0074] 6U: Maxillary first molar region;

[0075] 6L: Mandibular first molar region;

[0076] 6d: Distal surface of the first molar;

[0077] 7: Second molar region;

[0078] 7U: Maxillary second molar region;

[0079] 7L: Mandibular second molar region;

[0080] 7m: Mesial surface of the second molar;

[0081] 7mU: near-mesoplane;

[0082] 7mL: near the midline;

[0083] P1: The virtual occlusal plane of the denture;

[0084] P2: The surface formed by the buccal cusp tip, the lingual cusp tip, and the lingual cusp tip of the first molar portion 6, which are cusp-shaped.

[0085] P2U: The surface formed by the buccal cusp tip, lingual cusp tip, and lingual cusp tip of the maxillary second premolar 5U with cusp shape;

[0086] P2L: The surface formed by the buccal cusp tip, lingual cusp tip, and lingual cusp tip of the mandibular second premolar 5L with cusp shape;

[0087] P2': The occlusal surface of the second premolar portion 5 and the first molar portion 6 without cusp shapes;

[0088] P2'U: Occlusal surfaces of the maxillary second premolar portion 5U and the maxillary first molar portion 6U without cusp morphology;

[0089] P2'L: Occlusal surfaces of the mandibular second premolar portion 5L and mandibular first molar portion 6L without cusp morphology;

[0090] P3: The surface formed by the three points of the second molar part 7 with cusp shape: the mesial buccal cusp tip, the mesial lingual cusp tip, and the distal buccal cusp tip;

[0091] P3U: The surface formed by the mesial buccal cusp, mesial lingual cusp, and distal buccal cusp of the maxillary second molar 7U with cusp shape;

[0092] P3L: The surface formed by the mesial buccal cusp, mesial lingual cusp, and distal buccal cusp of the mandibular second molar 7L with cusp shape.

[0093] P3': Occlusal surface of the maxillary second molar 7 without cusp shape;

[0094] P3'U: Occlusal surface of the maxillary second molar 7U without cusp morphology;

[0095] P3'L: Occlusal surface of the mandibular second molar 7L without cusp morphology;

[0096] 10: Anterior dental artificial teeth;

[0097] 10U: Artificial teeth for the maxillary anterior dentition;

[0098] 10L: Artificial teeth for the mandibular anterior dentition;

[0099] 20: Occlusal central group artificial teeth;

[0100] 20U: Maxillary occlusal center group artificial teeth;

[0101] 20L: Mandibular occlusal center group artificial teeth;

[0102] 30: Single-site artificial teeth;

[0103] 30U: Single-site artificial tooth in the maxilla;

[0104] 30L: Mandibular single-site artificial tooth;

[0105] 100: Partially connected complete dentures;

[0106] f1: The contact area (first contact area) between the maxillary first premolar and the maxillary second premolar when no adjustment bending is applied;

[0107] f2: The contact area between the mandibular first premolar and the mandibular second premolar when no adjustment bending is applied (second contact area);

[0108] f3: The contact area (third contact area) between the maxillary first premolar and the maxillary second premolar when the adjustment curve is applied;

[0109] f4: The contact area between the mandibular first premolar and the mandibular second premolar when the adjustment curve is applied (fourth contact area);

[0110] f5: The contact area between the maxillary first molar and the maxillary second molar when no adjustment curve is applied (the fifth contact area);

[0111] f6: The contact area between the mandibular first molar and the mandibular second molar when no adjustment curvature is applied (sixth contact area).

[0112] f7: The contact area between the maxillary first molar and the maxillary second molar when the adjustment curve is applied (seventh contact area);

[0113] f8: The contact area between the mandibular first molar and the mandibular second molar when the adjustment curve is applied (eighth contact area). Detailed Implementation

[0114] (The reasons for this disclosure)

[0115] The inventors have discovered the following problems in patent documents 1 to 6.

[0116] Patent Document 1 does not specify the specific differences related to the behavior equivalent to conventional arrangement operations. As mentioned above, in the virtual space of a computer, the operator needs to manually arrange and correct the contact parts of the artificial teeth, which is a complex task, making the denture design process very burdensome.

[0117] Patent documents 2-5 are based on technologies from the past that pre-existed in denture fabrication. They did not consider the suitability of denture bases fabricated using more recent CAD / CAM technologies, and failed to achieve the simplification of artificial tooth placement and arrangement, as well as the most important effect of functional reproduction. Furthermore, there is a problem that the shape of the dental arch cannot be reproduced on a computer for artificial teeth connected by materials with three-dimensional mobility, thus making it impossible to fabricate denture bases that fit the connected teeth.

[0118] Furthermore, in the artificial tooth assembly described in reference 5, the positional relationship with the anterior teeth depends on the operator. Therefore, the horizontal or vertical overbite of the anterior teeth can obstruct the occlusal relationship of the molars during mandibular movement. In addition, only the maxillary second premolar and first molar are connected and fixed; the other parts must be arranged manually by the operator. Establishing an effective occlusal relationship requires corresponding skills and complex operations.

[0119] The artificial dentition described in Patent Document 6 involves designing and manufacturing the artificial tooth shape on CAD based on the different implantation positions of the artificial tooth roots for each patient, which incurs costs compared to mass-produced products. Furthermore, as a finished product intended for a large number of non-specific edentulous patients, its universality is unclear, and it cannot be used as a bedded denture.

[0120] Therefore, to address these issues, the present disclosure aims to provide a partially connected complete denture that can be fabricated quickly and efficiently, achieving aesthetic appeal and excellent occlusal relationships that harmonize with the oral cavity, masticatory movements, and facial appearance of various patients. Specifically, the present disclosure aims to provide a high-quality denture that is easily provided not only for typical edentulous patients, but also for complex cases such as those with significant jaw resorption as described in the technical background, or for patients with certain diseases who cannot easily visit a dentist—patients for whom conventional, complex denture fabrication methods are insufficient. Therefore, even without complex tooth-by-tooth artificial tooth arrangement and adjustments influenced by the operator's skill, the partially connected complete denture can be adjusted within the design and fabrication process of the complete denture using CAD / CAM technology, unlike conventional methods.

[0121] In conventional methods and CAD / CAM methods for denture fabrication, the most significant reason for the difficulty in achieving labor-saving techniques is the complexity of manipulating artificial teeth with all twenty-eight different parts, and the need for three-dimensional adjustments based on the operator's skill in reproducing the appropriate occlusal relationship. Therefore, considering pre-fixing with appropriate occlusal relationships, appropriately defining the parts that can be standardized and the parts that should be separated, and appropriately defining the combination of adjacent surfaces constituting the contact area in the areas where artificial teeth contact each other, the angle and area of ​​this contact area relative to the virtual occlusal plane of the denture, the aim is to provide a partially connected complete denture that can easily apply anterior-posterior adjustable curvature according to the morphology of the artificial teeth and has arch-adjustable flexibility to solve the aforementioned problems. The invention described in the technical solution, a partially connected complete denture with adjustable arch and occlusal curvature, is thus conceived.

[0122] The first embodiment of the present invention is a partially connected complete dental prosthesis (100) with adjustable arch and occlusal curvature, comprising:

[0123] Partially connected complete dental prostheses for the maxilla (U1); and

[0124] Partially connected complete mandibular prostheses (L1) are used.

[0125] The maxillary partially connected complete artificial tooth (U1) has the following characteristics:

[0126] The maxillary anterior dental prosthesis (10U) has eight parts centrally connected and fixed to the left and right sides of the maxillary partially connected complete dental prosthesis (U1): the maxillary central incisor part (1U), the maxillary lateral incisor part (2U), the maxillary canine part (3U), and the maxillary first premolar part (4U); and

[0127] The maxillary occlusal central group artificial tooth (20U) is connected and fixed to the maxillary second premolar portion (5U) and the maxillary first molar portion (6U) on the right and left sides of the maxillary partially connected complete artificial tooth (U1), respectively. The maxillary occlusal central group artificial tooth (20U) is also connected to the maxillary anterior group artificial tooth (10U).

[0128] The partially connected complete maxillary prosthesis (U1) is configured such that, on the right and left sides of the partially connected complete maxillary prosthesis (U1), a single maxillary prosthesis (30U) including the maxillary second molar portion (7U) can be joined to the maxillary occlusal center group prosthesis (20U).

[0129] The partially connected complete mandibular prosthesis (L1) has the following characteristics:

[0130] The mandibular anterior dental prosthesis (10L) is centrally connected and fixed to the mandibular partially connected complete dental prosthesis (L1), comprising eight parts: the mandibular central incisor part (1L), the mandibular lateral incisor part (2L), the mandibular canine part (3L), and the mandibular first premolar part (4L), located on both sides.

[0131] The mandibular occlusal central group artificial tooth (20L) is connected and fixed to the mandibular second premolar portion (5L) and mandibular first molar portion (6L) on the right and left sides of the mandibular partially connected complete artificial tooth (L1), respectively. The mandibular occlusal central group artificial tooth (20L) is also connected to the mandibular anterior group artificial tooth (10L).

[0132] The partially connected complete mandibular prosthesis (L1) is configured such that, on the right and left sides of the partially connected complete mandibular prosthesis (L1), a single mandibular prosthesis (30L) including the mandibular second molar portion (7L) can be joined to the mandibular occlusal center group prosthesis (20L).

[0133] The distal surface (4dU) of the maxillary first premolar (4U) is provided with a region formed by two cylindrical surfaces, which intersect the virtual occlusal plane (P1) of the denture at different angles on the occlusal side and the abutment side, respectively.

[0134] The mesial surface (5mU) of the maxillary second premolar (5U) has a region formed by a cylindrical surface. When the tooth has a cusp, this cylindrical surface is orthogonal to the surface (P2U) formed by the buccal and lingual cusps of the maxillary second premolar (5U) and the mesial-lingual cusp of the maxillary first molar (6U). When the tooth does not have a cusp, it is orthogonal to the occlusal surface (P2'U) of the maxillary second premolar (5U) and the maxillary first molar (6U).

[0135] A contact area is formed in which either the occlusal cylindrical surface or the basal cylindrical surface of the distal surface (4dU) of the maxillary first premolar (4U) contacts the mesial cylindrical surface (5mU) of the maxillary second premolar (5U).

[0136] The distal surface (4dL) of the mandibular first premolar (4L) is provided with a region formed by two cylindrical surfaces, which intersect the virtual occlusal plane (P1L) of the denture at different angles on the occlusal side and the abutment side, respectively.

[0137] On the mesial surface (5mL) of the mandibular second premolar (5L), there is a region formed by a cylindrical surface. When the cylindrical surface has a cusp, it is orthogonal to the surface (P2L) formed by the buccal and lingual cusps of the mandibular second premolar (5L) and the mesial-lingual cusp of the mandibular first molar (6L). When the cylindrical surface does not have a cusp, it is orthogonal to the occlusal surface (P2'L) of the mandibular second premolar (5L) and the mandibular first molar (6L).

[0138] A contact area is formed in which either the occlusal cylindrical surface or the basal cylindrical surface of the distal surface (4dL) of the mandibular first premolar (4L) contacts the cylindrical surface of the mesial surface (5mL) of the mandibular second premolar (5L).

[0139] In the maxillary partially connected complete dental prosthesis (U1), when the occlusal surface of the distal surface (4dU) of the maxillary first premolar (4U) contacts the cylindrical surface of the mesial surface (5mU) of the maxillary second premolar (5U) to form a first contact area (f1), in the mandibular partially connected complete dental prosthesis (L1), the basal surface of the distal surface (4dL) of the mandibular first premolar (4L) contacts the cylindrical surface of the mesial surface (5mL) of the mandibular second premolar (5L) to form a second contact area (f2).

[0140] In the maxillary partially connected complete artificial tooth (U1), when the cylindrical surface of the distal surface (4dU) of the maxillary first premolar (4U) contacts the cylindrical surface of the mesial surface (5mU) of the maxillary second premolar (5U) to form a third contact area (f3), in the mandibular partially connected complete artificial tooth (L1), when the cylindrical surface of the distal surface (4dL) of the mandibular first premolar (4L) contacts the cylindrical surface of the mesial surface (5mL) of the mandibular second premolar (5L) to form a fourth contact area (f4).

[0141] This design allows for the creation of dentures that provide both aesthetic appeal and functional occlusion, easily harmonizing with the chewing movements, surrounding oral tissues, and facial appearance of various patients. Furthermore, not only in conventional methods, but also in the design and fabrication of complete dentures using CAD / CAM technology, the complex arrangement of individual artificial teeth and adjustments influenced by the operator's skill are eliminated. This achieves the labor-saving effect originally intended by CAD / CAM technology, significantly reducing the burden on dentists and dental technicians involved in denture fabrication.

[0142] In the second embodiment of the present invention, the partially connected complete artificial tooth...

[0143] It is permissible that, when the first contact area (f1) is formed in the maxillary partially connected complete artificial tooth (U1) and the second contact area (f2) is formed in the mandibular partially connected complete artificial tooth (L1), the first contact area (f1) and the second contact area (f2) each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is below, and is orthogonal to the virtual occlusal plane (P1) of the denture.

[0144] In the partially connected complete artificial teeth of the third embodiment of the present invention

[0145] Alternatively, when the third contact area (f3) is formed in the maxillary partially connected complete artificial tooth (U1) and the fourth contact area (f4) is formed in the mandibular partially connected complete artificial tooth (L1), the third contact area (f3) and the fourth contact area (f4) each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is as follows, and intersects the virtual occlusal plane (P1) of the denture with an interior angle (θ1U, ​​θ1L) of more than 70° and less than 90°.

[0146] In the fourth embodiment of the present invention, the partially connected complete artificial tooth...

[0147] It is permissible that, in the maxillary partially connected complete dental prosthesis (U1), the maxillary single-site prosthesis (30U) is engaged with the maxillary occlusal central group prosthesis (20U), and in the mandibular partially connected complete dental prosthesis (L1), the mandibular single-site prosthesis (30L) is engaged with the mandibular occlusal central group prosthesis (20L).

[0148] The distal surface (6dU) of the maxillary first molar portion (6U) of the maxillary occlusal center group artificial tooth (20U) is provided with a region formed by two cylindrical surfaces, the two cylindrical surfaces intersecting the virtual occlusal plane (P1) of the denture at different angles on the occlusal side and the abutment side, respectively.

[0149] The mesial surface (7mU) of the maxillary second molar (7U) has a region formed by a cylindrical surface. When the tooth has a cusp, this cylindrical surface is orthogonal to the surface (P3U) formed by the mesobuccal cusp, meslingular cusp, and distobuccal cusp of the maxillary second molar (7U). When the tooth does not have a cusp, it is orthogonal to the occlusal surface (P3'U) of the maxillary second molar (7U).

[0150] The cylindrical surface on the occlusal side and the cylindrical surface on the basal side of the maxillary first molar (6U) form a contact area with the cylindrical surface of the mesial surface (7mU) of the maxillary second molar (7U).

[0151] The distal surface (6dL) of the mandibular first molar portion (6L) of the mandibular occlusal center group artificial tooth (20L) is provided with a region formed by two cylindrical surfaces. The two cylindrical surfaces intersect the virtual occlusal plane (P1) of the denture at different angles on the occlusal side and the abutment side, respectively.

[0152] On the mesial surface (7mL) of the mandibular second molar (7L), there is a region formed by a cylindrical surface. When the tooth has a cusp, this cylindrical surface is orthogonal to the surface (P3L) formed by the mesial buccal cusp, mesial lingual cusp, and distobuccal cusp of the mandibular second molar (7L). When the tooth does not have a cusp, it is orthogonal to the occlusal surface (P3'L) of the mandibular second molar (7L).

[0153] The cylindrical surface on the occlusal side and the cylindrical surface on the basal side of the first mandibular molar (6L) form a contact area with the cylindrical surface of the mesial surface (7mL) of the second mandibular molar (7L).

[0154] In the maxillary partially connected complete dental prosthesis (U1), when the occlusal surface of the distal surface (6dU) of the maxillary first molar (6U) contacts the cylindrical surface of the mesial surface (7mU) of the maxillary second molar (7U) to form a fifth contact area (f5), in the mandibular partially connected complete dental prosthesis (L1), the basal surface of the distal surface (6dL) of the mandibular first molar (6L) contacts the cylindrical surface of the mesial surface (7mL) of the mandibular second molar (7L) to form a sixth contact area (f6).

[0155] In the maxillary partially connected complete dental prosthesis (U1), when the basal surface of the distal surface (6dU) of the maxillary first molar (6U) contacts the cylindrical surface of the mesial surface (7mU) of the maxillary second molar (7U) to form a seventh contact area (f7), in the mandibular partially connected complete dental prosthesis (L1), the occlusal surface of the distal surface (6dL) of the mandibular first molar (6L) contacts the cylindrical surface of the mesial surface (7mL) of the mandibular second molar (7L) to form an eighth contact area (f8).

[0156] In the fifth embodiment of the present invention, the partially connected complete artificial tooth...

[0157] Alternatively, when the fifth contact area (f5) is formed in the maxillary partially connected complete prosthesis (U1) and the sixth contact area (f6) is formed in the mandibular partially connected complete prosthesis (L1), the fifth contact area (f5) and the sixth contact area (f6) each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is below, and is orthogonal to the virtual occlusal plane (P1) of the denture.

[0158] In the partially connected complete artificial teeth of the sixth embodiment of the present invention

[0159] Alternatively, when the seventh contact region (f7) is formed in the maxillary partially connected complete artificial tooth (U1) and the eighth contact region (f8) is formed in the mandibular partially connected complete artificial tooth (L1), the seventh contact region (f7) and the eighth contact region (f8) each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is as follows, and intersects the virtual occlusal plane (P1) of the denture with an interior angle (θ2U, θ2L) of more than 40° and less than 90°.

[0160] In the seventh embodiment of the present invention, the partially connected complete artificial tooth...

[0161] In the partially connected complete mandibular prosthesis (L1), the occlusal surfaces of the mandibular first premolar portion (4L) of the mandibular anterior dentition group prosthesis (10L), and the mandibular second premolar portion (5L) and mandibular first molar portion (6L) of the mandibular occlusal center group prosthesis (20L) coincide with the virtual occlusal plane (P1) of the denture.

[0162] The maxillary anterior dentition artificial tooth (10U) of the partially connected complete maxillary prosthesis (U1) has a maxillary partial occlusal surface at the cusp (3cU) that is parallel to the virtual occlusal plane (P1) of the denture.

[0163] The maxillary first premolar portion (4U) of the maxillary anterior dentition group artificial tooth (10U), the maxillary second premolar portion (5U) and the maxillary first molar portion (6U) of the maxillary occlusal center group artificial tooth (20U), and the maxillary second molar portion (7U) of the maxillary single-site artificial tooth (30U) are all constructed in a cuspless form.

[0164] The mandibular anterior dentition group (10L) of the partially connected complete mandibular prosthesis (L1) has a mandibular partial occlusal surface (3L) in which the cusp (3cL) is parallel to the virtual occlusal plane (P1) of the denture.

[0165] The mandibular first premolar portion (4L) of the mandibular anterior group artificial tooth (10L), the mandibular second premolar portion (5L) and the mandibular first molar portion (6L) of the mandibular occlusal center group artificial tooth (20L), and the mandibular second molar portion (7L) of the mandibular single-site artificial tooth (30L) are configured in a cuspless form.

[0166] This configuration achieves the following effect: it eliminates the restriction of chewing movements by artificial teeth, thus providing high-quality dentures with aesthetically pleasing and functional occlusal relationships for cases where significant occlusal resorption makes dentures that are difficult to achieve using conventional methods, and for patients who are unable to visit the dentist due to physical illness.

[0167] In the partially connected complete artificial teeth of the eighth embodiment of the present invention

[0168] Alternatively, the maxillary first premolar portion (4U) of the maxillary anterior group artificial teeth (10U), the maxillary second premolar portion (5U) of the maxillary occlusal center group artificial teeth (20U), the maxillary first molar portion (6U), and the maxillary second molar portion (7U) of the maxillary single-site artificial teeth (30U) may be constructed with cusps.

[0169] The mandibular partial-connected complete artificial tooth (L1) comprises the mandibular anterior tooth group artificial tooth (10L) with the mandibular first premolar portion (4L), the mandibular occlusal center group artificial tooth (20L) with the mandibular second premolar portion (5L) and the mandibular first molar portion (6L), and the mandibular single-site artificial tooth (30L) with the mandibular second molar portion (7L) having a cusp shape.

[0170] This design achieves the following effect: even in cases where artificial teeth have cusp morphology, it becomes possible to reproduce the original occlusal relationship with cusp morphology with high precision compared to previous methods, easily providing high-quality dentures with aesthetically pleasing and functional occlusal relationships.

[0171] In the partially connected complete denture of the ninth embodiment of the present invention

[0172] Alternatively, in the partially connected complete mandibular prosthesis (L1), the occlusal surfaces of the mandibular first premolar portion (4L) of the mandibular anterior group prosthesis (10L), and the mandibular second premolar portion (5L) and mandibular first molar portion (6L) of the mandibular occlusal center group prosthesis (20L) coincide with the virtual occlusal plane (P1) of the denture.

[0173] The mandibular partial-connected complete artificial tooth (L1) comprises the mandibular anterior tooth group artificial tooth (10L) comprising the mandibular first premolar portion (4L), the mandibular occlusal center group artificial tooth (20L) comprising the mandibular second premolar portion (5L) and the mandibular first molar portion (6L), and the mandibular single-site artificial tooth (30L) comprising the mandibular second molar portion (7L) in a cuspless form.

[0174] The maxillary partial-connected complete artificial tooth (U1) comprises the maxillary anterior group artificial tooth (10U) with the maxillary first premolar portion (4U), the maxillary occlusal center group artificial tooth (20U) with the maxillary second premolar portion (5U) and the maxillary first molar portion (6U), and the maxillary single-site artificial tooth (30U) with the maxillary second molar portion (7U) having a cusp shape.

[0175] This configuration provides the following benefits: it facilitates the provision of therapeutic dentures for patients with unstable jaw positions or irregular sampling points as described in the background art.

[0176] Based on the above, the partially connected complete denture with adjustable arch and occlusal curvature disclosed herein can easily provide aesthetically pleasing and functional high-quality dentures for patients with complex cases of significant occlusal embankment resorption or those requiring care who are unable to visit a dentist due to certain diseases, and for patients who are difficult to manage with conventional complex denture fabrication methods. This helps prevent the decline of oral function and improves patients' nutritional intake by restoring their eating function, thus contributing to the extension of healthy lifespan in a super-aged society.

[0177] The present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the most effective examples are shown for ease of understanding, but the invention is not limited thereto.

[0178] (Implementation Method 1)

[0179] Figure 1 This is a diagram showing the partially connected complete artificial tooth 100 of Embodiment 1 of the present invention as viewed from the occlusal surface. Figure 1 The upper part shows the maxillary partially connected complete artificial tooth U1, and the lower part shows the mandibular partially connected complete artificial tooth L1. The partially connected complete artificial tooth 100 includes the maxillary partially connected complete artificial tooth U1 and the mandibular partially connected complete artificial tooth L1. The maxillary partially connected complete artificial tooth U1 and the mandibular partially connected complete artificial tooth L1 are each composed of five parts: anterior dental group artificial tooth 10, right occlusal central group artificial tooth 20, single-site artificial tooth 30 of the right second molar portion 7, left occlusal central group artificial tooth 20, and single-site artificial tooth 30 of the left second molar portion 7.

[0180] The anterior dental prosthesis 10 is fixed to eight parts: the left and right central incisor part 1, the lateral incisor part 2, the canine part 3, and the first premolar part 4. Here, in cases where there is no space for artificial teeth due to the shape of the occlusal ridge, and where there is a possibility of denture dislodgement during occlusion, the single-part artificial tooth 30 of the second molar part 7 can be excluded from the configuration. That is, the single-part artificial tooth 30 of the second molar part 7 is configured to engage with the occlusal central group artificial tooth 20.

[0181] The maxillary partially connected complete dental prosthesis U1 comprises a maxillary anterior dentition prosthesis 10U, a maxillary occlusal central group prosthesis 20U, and a maxillary single-site prosthesis 30U. The maxillary occlusal central group prosthesis 20U is connected to the maxillary anterior dentition prosthesis 10U. The maxillary single-site prosthesis 30U is fitted to engage with the maxillary occlusal central group prosthesis 20U.

[0182] The maxillary anterior dentition prosthesis 10U is positioned in the center of the maxillary partially connected complete dentition prosthesis U1. The maxillary anterior dentition prosthesis 10U has a maxillary central incisor portion 1U, a maxillary lateral incisor portion 2U, a maxillary canine portion 3U, and a maxillary first premolar portion 4U located on both sides. These eight portions—the maxillary central incisor portion 1U, the maxillary lateral incisor portion 2U, the maxillary canine portion 3U, and the maxillary first premolar portion 4U located on both sides—are connected and fixed.

[0183] Maxillary occlusal central group artificial teeth 20U are respectively positioned on the right and left sides of the maxillary partially connected complete artificial teeth U1, and are connected to the maxillary anterior group artificial teeth 10U. For example, the maxillary occlusal central group artificial teeth 20U are mechanically connected to the maxillary anterior group artificial teeth 10U. The maxillary occlusal central group artificial teeth 20U have a maxillary second premolar portion 5U and a maxillary first molar portion 6U on the right and left sides of the maxillary partially connected complete artificial teeth U1, respectively. The maxillary second premolar portion 5U and the maxillary first molar portion 6U are fixedly connected to the right and left sides of the maxillary partially connected complete artificial teeth U1, respectively.

[0184] The maxillary single-site artificial teeth 30U are respectively positioned on the right and left sides of the maxillary partially connected complete artificial teeth U1. The maxillary single-site artificial teeth 30U have a maxillary second molar portion 7U. The maxillary single-site artificial teeth 30U are assembled on the right and left sides of the maxillary partially connected complete artificial teeth U1 as detachable artificial teeth 20U in the maxillary occlusal center group.

[0185] The mandibular partially connected complete dental prosthesis L1 comprises a mandibular anterior dentition prosthesis 10L, a mandibular central occlusal dentition prosthesis 20L, and a mandibular single-site prosthesis 30L. The mandibular central occlusal dentition prosthesis 20L is connected to the mandibular anterior dentition prosthesis 10L. The mandibular single-site prosthesis 30L is fitted to engage with the mandibular central occlusal dentition prosthesis 20L.

[0186] The mandibular anterior dentition artificial tooth 10L is positioned in the center of the mandibular partially connected complete dentition artificial tooth L1. The mandibular anterior dentition artificial tooth 10L has mandibular central incisor portion 1L, mandibular lateral incisor portion 2L, mandibular canine portion 3L, and mandibular first premolar portion 4L located on both sides. These eight portions are connected and fixed.

[0187] The mandibular occlusal central group artificial teeth 20L are respectively positioned on the right and left sides of the mandibular partially connected complete artificial teeth L1, and are connected to the mandibular anterior group artificial teeth 10L. For example, the mandibular occlusal central group artificial teeth 20L are mechanically connected to the mandibular anterior group artificial teeth 10L. The mandibular occlusal central group artificial teeth 20L have a mandibular second premolar portion 5L and a mandibular first molar portion 6L on the right and left sides of the mandibular partially connected complete artificial teeth L1, respectively. The mandibular second premolar portion 5L and the mandibular first molar portion 6L on the right and left sides of the mandibular partially connected complete artificial teeth L1 are connected and fixed.

[0188] The mandibular single-site artificial teeth 30L are respectively positioned on the right and left sides of the mandibular partially connected complete artificial teeth L1. The mandibular single-site artificial teeth 30L have a mandibular second molar portion 7L. The mandibular single-site artificial teeth 30L are respectively operably fitted onto the mandibular occlusal center group artificial teeth 20L on the right and left sides of the mandibular partially connected complete artificial teeth L1.

[0189] Figure 2 Enlarged display Figure 1 The diagram shows the contact area between the first premolar portion 4 of the anterior group artificial tooth 10 and the second premolar portion 5 of the occlusal group artificial tooth 20 in the occlusal observation of the partially connected complete dental prosthesis 100 for the mandible. The shape of the area constituting the contact area is not particularly limited as long as it is a cylindrical surface that is straight in the direction intersecting the planes and cylinders as specified in the technical solution. However, as a preferred example, in the top view, when viewing the contact area f2 formed by the cylindrical surface on the basal side of the distal surface 4d of the first premolar portion 4 and the mesial surface 5m of the second premolar portion 5 from a direction orthogonal to the occlusal plane P1 (i.e., from the upper surface), its cross-sectional shape can be an arc-shaped cylindrical surface. This allows the contact portions of the anterior group artificial tooth 10 and the occlusal group artificial tooth 20 to contact at any angle on the left and right sides, enabling horizontal adjustments such as expanding or shrinking the dental arch, and accommodating a large number of non-specific patients with different jaw shapes.

[0190] It should be noted that, in Figure 2 The example shown illustrates a partial-connected complete artificial tooth L1 for the mandible, but it is not limited to this. For example, the above configuration can also be found in a partial-connected complete artificial tooth U1 for the maxilla.

[0191] Figure 3a , Figure 3b The partially connected complete denture 100 is shown from the side, with each contact area divided into options. When viewed from the side, the anterior dental prosthesis 10 includes a first premolar 4 in addition to the central incisors 1, lateral incisors 2, and canines 3 on the left and right sides. This allows the anterior and molar portions to be fixed in a proper, perpendicular position, preventing gaps in the premolar portion due to arrangement differences and interference during eccentric movements. It also allows for a beautiful and harmonious reproduction of the proper occlusal relationship. Here, the distal surface 4d of the first premolar portion 4 of the anterior dental prosthesis 10 has a contact area formed by two cylindrical surfaces. The angles at which these two cylindrical surfaces intersect the virtual occlusal plane P1 of the denture are different on the occlusal and abutmental sides, respectively. The mesial surface 5m of the second premolar portion 5 has an area formed by a single cylindrical surface. When cusp morphology is present, it is orthogonal to plane P2 formed by the buccal and lingual cusps of the second premolar portion 5 and the lingual cusp of the first molar portion 6 (see reference). Figure 3a , 3b In the absence of cusp morphology, it is orthogonal to the occlusal surface P2' of the second premolar portion 5 and the first molar portion 6 (refer to...). Figure 4 It should be noted that "cusped morphology" refers to a morphology with cusps, such as a convex shape on the occlusal surface of a molar. "Ccuspless morphology" refers to a morphology without cusps, such as a flat occlusal surface of a molar without any convex shape like cusps.

[0192] In the two contact areas of the distal surface 4d of the first premolar 4, one can choose to apply anterior-posterior adjustment curvature by forming a contact area with either cylindrical surface when in contact with the distal surface 5d of the second premolar 5, or not apply anterior-posterior adjustment curvature and align with the virtual occlusal plane P1 of the denture.

[0193] In detail, in the maxillary partially connected complete prosthesis U1, a region formed by two cylindrical surfaces is provided on the distal surface 4dU of the maxillary first premolar 4U. The angles at which these two cylindrical surfaces intersect the virtual occlusal plane P1 of the prosthesis differ on the occlusal and basal sides, respectively. A region formed by a single cylindrical surface is provided on the mesial surface 5mU of the maxillary second premolar 5U. This single cylindrical surface, when cusp-shaped, is orthogonal to the plane P2U formed by the buccal and lingual cusps of the maxillary second premolar 5U and the mesial-lingual cusp of the maxillary first molar 6U (see reference). Figure 3a , 3b In the absence of cusp morphology, it is orthogonal to the occlusal surface P2'U of the maxillary second premolar 5U and the maxillary first molar 6U (refer to...). Figure 4 The contact area is formed whereby either the occlusal cylindrical surface or the basal cylindrical surface of the distal surface 4dU of the maxillary first premolar 4U contacts the mesial cylindrical surface 5mU of the maxillary second premolar 5U.

[0194] The distal surface 4dL of the mandibular first premolar 4L has a region formed by two cylindrical surfaces, which intersect the virtual occlusal plane P1 of the denture at different angles on the occlusal and basal sides, respectively. The mesial surface 5mL of the mandibular second premolar 5L has a region formed by a single cylindrical surface, which, when cusp-shaped, is orthogonal to the plane P2L formed by the buccal and lingual cusps of the mandibular second premolar 5L and the mesial-lingual cusp of the mandibular first molar 6L (see reference). Figure 3a , 3b In the absence of cusp morphology, it is orthogonal to the occlusal surface P2'L of the mandibular second premolar 5L and the mandibular first molar 6L (refer to...). Figure 4The contact area is formed whereby either the occlusal cylindrical surface or the basal cylindrical surface of the distal surface 4dL of the mandibular first premolar 4L contacts the mesial cylindrical surface 5mL of the mandibular second premolar 5L.

[0195] Furthermore, on the distal surface 6d of the first molar portion 6 of the left and right occlusal central group artificial teeth 20, two contact areas formed by two cylindrical surfaces are provided. The angles at which these two cylindrical surfaces intersect the virtual occlusal plane P1 of the denture are different on the occlusal surface side and the abutment surface side, respectively. On the mesial surface 7m of the second molar portion 7, a region formed by a single cylindrical surface is provided. When the cylindrical surface has a cusp shape, it is orthogonal to the plane P3 formed by the mesobuccal cusp tip, the meslingular cusp tip, and the distal buccal cusp tip of the second molar portion 7. When the cylindrical surface does not have a cusp shape, it is orthogonal to the occlusal surface P3' of the second molar portion 7.

[0196] In the two contact areas of the distal surface 6d of the first molar portion 6, one can choose to apply anterior-posterior adjustment curvature by forming a contact area with either cylindrical surface when in contact with the mesial surface 7m of the second molar portion 7, or not apply anterior-posterior adjustment curvature and align with the virtual occlusal plane P1 of the denture.

[0197] In detail, in the maxillary partially connected complete denture prosthesis U1, the maxillary single-site prosthesis 30U is joined to the maxillary occlusal central group prosthesis 20U. Similarly, in the mandibular partially connected complete denture prosthesis L1, when the mandibular single-site prosthesis 30L is joined to the mandibular occlusal central group prosthesis 20L, a region formed by two cylindrical surfaces is provided on the distal surface 6dU of the maxillary first molar portion 6U of the maxillary occlusal central group prosthesis 20U. The angles at which these two cylindrical surfaces intersect the virtual occlusal plane P1 of the denture differ, respectively, on the occlusal and basal surfaces. A region formed by a single cylindrical surface is provided on the mesial surface 7mU of the maxillary second molar portion 7U. This single cylindrical surface, when cusp-shaped, is orthogonal to the plane P3U formed by the mesial buccal cusp, mesial lingual cusp, and distal buccal cusp of the maxillary second molar portion 7U (see reference). Figure 3a , 3b In the absence of cusp morphology, it is orthogonal to the occlusal surface P3'U of the maxillary second molar 7U (refer to...). Figure 4 The cylindrical surface on the occlusal side and the cylindrical surface on the basal side of the maxillary first molar 6U forms a contact area with the cylindrical surface of the mesial surface 7mU of the maxillary second molar 7U.

[0198] The distal surface 6dL of the mandibular first molar portion 6L of the mandibular occlusal center group artificial tooth 20L has a region formed by two cylindrical surfaces. The angles at which these two cylindrical surfaces intersect the virtual occlusal plane P1 of the denture are different on the occlusal and basal sides, respectively. The mesial surface 7mL of the mandibular second molar portion 7L has a region formed by a single cylindrical surface. When the cylindrical surface has a cusp shape, it is orthogonal to the plane P3L formed by the mesial buccal cusp, mesial lingual cusp, and distal buccal cusp of the mandibular second molar portion 7L (see reference). Figure 3a , 3b In the absence of cusp morphology, it is orthogonal to the occlusal surface P3'L of the mandibular second molar 7L (refer to...). Figure 4 The cylindrical surface on the occlusal side and the cylindrical surface on the basal side of the mandibular first molar 6L forms a contact area with the cylindrical surface on the mesial surface 7mL of the mandibular second molar 7L.

[0199] Figure 3a The diagram shows a combination of the contact areas of the maxillary partially connected complete artificial tooth U1 and the mandibular partially connected complete artificial tooth L1 in a partially connected complete artificial tooth 100 without the application of anterior-posterior adjustment curvature. As a preferred example of the case without the application of anterior-posterior adjustment curvature, examples include cases where both the maxillary partially connected complete artificial tooth U1 and the mandibular partially connected complete artificial tooth L1 are cuspless, or cases where a combination of a cusp-shaped maxillary partially connected complete artificial tooth U1 and a cuspless mandibular partially connected complete artificial tooth L1 is used. However, the morphology of the artificial teeth used in this invention is not limited to this, and widely known artificial teeth can be used. It should be noted that in... Figure 3a Examples of partially connected complete artificial teeth 100, including a maxillary partially connected complete artificial tooth U1 with cusp morphology and a mandibular partially connected complete artificial tooth L1 with cusp morphology, are shown.

[0200] Here, in the maxillary partially connected complete prosthesis U1, the occlusal surface of the distal surface 4d of the first premolar portion 4 contacts the mesial surface 5m of the second premolar portion 5, forming a contact area f1. In the mandibular partially connected complete prosthesis L1, the basal surface of the distal surface 4d of the first premolar portion 4 contacts the mesial surface 5m of the second premolar portion 5, forming a contact area f2. The contact area is 0.01 mm² in both the maxillary partially connected complete prosthesis U1 and the mandibular partially connected complete prosthesis L1. 2 Above 10.0mm 2 The preferred value is 0.02mm. 2 Above 9.0mm 2 Below. Furthermore, each contact area is orthogonal to the virtual occlusal plane P1 of the denture.

[0201] In detail, in the maxillary partially connected complete prosthesis U1, the occlusal surface of the distal surface 4dU of the maxillary first premolar 4U contacts the mesial surface 5mU of the maxillary second premolar 5U, forming a first contact area f1. In the mandibular partially connected complete prosthesis L1, the basal surface of the distal surface 4dL of the mandibular first premolar 4L contacts the mesial surface 5mL of the mandibular second premolar 5L, forming a second contact area f2. The first contact area f1 and the second contact area f2 each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is preferably 0.02 mm. 2 Above 9.0mm 2 The following are the contact areas. Furthermore, the first contact area f1 and the second contact area f2 are orthogonal to the virtual occlusal plane P1 of the denture, respectively.

[0202] Next, in the maxillary partially connected complete prosthesis U1, the occlusal surface of the distal surface 6d of the first molar portion 6 contacts the mesial surface 7m of the second molar portion 7, forming a contact area f5. In the mandibular partially connected complete prosthesis L1, the basal surface of the distal surface 6d of the first molar portion 6 contacts the mesial surface 7m of the second molar portion 7, forming a contact area f6. The contact area in both the maxillary partially connected complete prosthesis U1 and the mandibular partially connected complete prosthesis L1 is 0.01 mm². 2 Above 10.0mm 2 The preferred value is 0.02mm. 2 Above 9.0mm 2 Below. Furthermore, each contact area is orthogonal to the virtual occlusal plane P1 of the denture.

[0203] In detail, in the maxillary partially connected complete prosthesis U1, the occlusal surface of the distal surface 6dU of the maxillary first molar 6U contacts the mesial surface 7mU of the maxillary second molar 7U, forming a fifth contact area f5. In the mandibular partially connected complete prosthesis L1, the basal surface of the distal surface 6dL of the mandibular first molar 6L contacts the mesial surface 7mL of the mandibular second molar 7L, forming a sixth contact area f6. The fifth contact area f5 and the sixth contact area f6 each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is preferably 0.02 mm. 2 Above 9.0mm 2The following are the contact areas. Furthermore, the fifth contact area f5 and the sixth contact area f6 are orthogonal to the virtual occlusal plane P1 of the denture.

[0204] Furthermore, it is not necessary for the contact areas of the first premolar portion 4 and the second premolar portion 5 to be identical to the combination of the first molar portion 6 and the second molar portion 7. For example, the first premolar portion 4 and the second premolar portion 5 may not be subject to anterior-posterior adjustment curvature, and the first molar portion 6 and the second molar portion 7 may adopt the contact area combination described later, with anterior-posterior adjustment curvature applied only to that portion. In addition, as mentioned above, in cases where there is no space for artificial teeth to be arranged according to the shape of the jaw ridge, and where there is a possibility of denture dislodgement during occlusion, the single artificial tooth 30 of the second molar portion 7 may be excluded from the configuration.

[0205] Figure 3b The diagram shows a combination of contact areas for a maxillary partially connected complete prosthesis U1 and a mandibular partially connected complete prosthesis L1 with anterior-posterior adjustment bends applied. The occlusal surface morphology of the prosthesis is not limited here, but canines are preferred. The illustrated contact areas are selected as a method to easily reproduce the morphology of the prosthesis by pre-applying the most appropriate anterior-posterior adjustment bend.

[0206] Here, in the maxillary partially connected complete prosthesis U1, the cylindrical surface of the distal surface 4d of the first premolar portion 4 on the basal side contacts the cylindrical surface of the mesial surface 5m of the second premolar portion 5, forming a contact area f3. In the mandibular partially connected complete prosthesis L1, the cylindrical surface of the distal surface 4d of the first premolar portion 4 on the occlusal side contacts the cylindrical surface of the mesial surface 5m of the second premolar portion 5, forming a contact area f4. The contact area in both the maxillary partially connected complete prosthesis U1 and the mandibular partially connected complete prosthesis L1 is 0.01 mm². 2 Above 10.0mm 2 The preferred value is 0.02mm. 2 Above 9.0mm 2 Furthermore, each contact area intersects the virtual occlusal plane P1 of the denture at an internal angle of 70° or more and less than 90°, preferably 75° or more and 88° or less.

[0207] In detail, in the maxillary partially connected complete prosthesis U1, the basal surface of the distal surface 4dU of the maxillary first premolar 4U contacts the mesial surface 5mU of the maxillary second premolar 5U, forming a third contact area f3. In the mandibular partially connected complete prosthesis L1, the occlusal surface of the distal surface 4dL of the mandibular first premolar 4L contacts the mesial surface 5mL of the mandibular second premolar 5L, forming a fourth contact area f4. The third contact area f3 and the fourth contact area f4 each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is preferably 0.02 mm. 2 Above 9.0mm 2 The contact areas are as follows. Furthermore, the third contact area f3 and the fourth contact area f4 intersect the virtual occlusal plane P1 of the denture at interior angles θ1U and θ1L of 70° or more and less than 90°, respectively. Preferably, the interior angles θ1U and θ1L are 75° or more and 88° or less.

[0208] Next, in the maxillary partially connected complete prosthesis U1, the cylindrical surface of the distal surface 6d of the first molar portion 6 on the basal side contacts the cylindrical surface of the mesial surface 7m of the second molar portion 7, forming a contact area f7. In the mandibular partially connected complete prosthesis L1, the cylindrical surface of the distal surface 6d of the first molar portion 6 on the occlusal side contacts the cylindrical surface of the mesial surface 7m of the second molar portion 7, forming a contact area f8. In both the maxillary partially connected complete prosthesis U1 and the mandibular partially connected complete prosthesis L1, the contact area is 0.01 mm². 2 Above 10.0mm 2 The preferred value is 0.02mm. 2 Above 9.0mm 2 Furthermore, each contact area intersects the virtual occlusal plane P1 of the denture at an internal angle of 40° or more and less than 90°, preferably 45° or more and 88° or less.

[0209] In detail, in the maxillary partially connected complete dental prosthesis U1, the cylindrical surface of the distal surface 6dU of the maxillary first molar 6U on the basal side contacts the cylindrical surface of the mesial surface 7mU of the maxillary second molar 7U, forming a seventh contact area f7. In the mandibular partially connected complete dental prosthesis L1, the cylindrical surface of the distal surface 6dL of the mandibular first molar 6L on the occlusal side contacts the cylindrical surface of the mesial surface 7mL of the mandibular second molar 7L, forming an eighth contact area f8. The seventh contact area f7 and the eighth contact area f8 each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The preferred contact area is 0.02 mm.2 Above 9.0mm 2 The contact areas are as follows. Furthermore, the seventh contact area f7 and the eighth contact area f8 intersect the virtual occlusal plane P1 of the denture at interior angles θ2U and θ2L of 40° or more and less than 90°, respectively. Preferably, the interior angles θ2U and θ2L are 45° or more and 88° or less.

[0210] Furthermore, as mentioned above, in cases where there is no space for artificial teeth to be arranged according to the shape of the jaw ridge, and where there is a possibility of denture dislodgement during occlusion, the single artificial tooth 30 of the second molar portion 7 may be excluded from the configuration.

[0211] exist Figure 4 Other examples of partially connected complete artificial teeth 100 are shown in the side view. Figure 4 In the examples shown, the molar crowns of both the maxillary partially connected complete artificial tooth U1 and the mandibular partially connected complete artificial tooth L1 are cuspless.

[0212] The occlusal surfaces of the first premolar portion 4 of the anterior group artificial tooth 10, the second premolar portion 5, and the first molar portion 6 of the occlusal center group artificial tooth 20 of the mandibular partially connected complete artificial tooth L1 coincide with the virtual occlusal plane P1 of the denture. The canine portion 3 of the anterior group artificial tooth 10 of the maxillary partially connected complete artificial tooth U1 and the mandibular partially connected complete artificial tooth L1 has a partial occlusal surface at the cusp 3c that is parallel to the virtual occlusal plane P1 of the denture. The first premolar portion 4 of the anterior group artificial tooth 10, the second premolar portion 5 and the first molar portion 6 of the occlusal center group artificial tooth 20, and the second molar portion 7 of the single-site artificial tooth 30 are all constructed without cusps.

[0213] In detail, in the mandibular partially connected complete prosthesis L1, the occlusal surfaces of the mandibular first premolar portion 4L of the mandibular anterior dentition group prosthesis 10L, the mandibular second premolar portion 5L and the mandibular first molar portion 6L of the mandibular occlusal center group prosthesis 20L coincide with the virtual occlusal plane P1 of the denture. In the maxillary partially connected complete prosthesis U1, the maxillary canine portion 3U of the maxillary anterior dentition group prosthesis 10U has a maxillary partial occlusal surface at the cusp 3cU that is parallel to the virtual occlusal plane P1 of the denture. The maxillary first premolar portion 4U of the maxillary anterior dentition group prosthesis 10U, the maxillary second premolar portion 5U of the maxillary occlusal center group prosthesis 20U, the maxillary first molar portion 6U, and the maxillary second molar portion 7U of the single-site maxillary prosthesis 30U are all constructed without cusps. The mandibular anterior dentition artificial tooth L1, comprising the mandibular canine portion 3L of the mandibular anterior dentition artificial tooth 10L, has a mandibular partial occlusal surface at the cusp 3cL that is parallel to the virtual occlusal plane P1 of the denture. The mandibular first premolar portion 4L of the mandibular anterior dentition artificial tooth 10L, the mandibular second premolar portion 5L of the mandibular occlusal center group artificial tooth 20L, the mandibular first molar portion 6L, and the mandibular second molar portion 7L of the mandibular single-site artificial tooth 30L are all constructed in a cuspless form.

[0214] Furthermore, as mentioned above, in cases where there is no space for artificial teeth due to the shape of the jaw ridge, and where there is a possibility of denture dislodgement during occlusion, the single artificial tooth 30 of the second molar portion 7 can be excluded from the configuration. This results in the following effect: the chewing movement is not restricted by the artificial tooth, thus providing a high-quality denture with an aesthetically pleasing and functional occlusal relationship, particularly for cases where jaw ridge resorption is significant and dentures made using conventional methods are not readily available, or for patients who cannot easily visit the dentist due to illness.

[0215] Figure 5 Other examples of partially connected complete dentures 100 are shown in a side view. Figure 5 In the example shown, the molar portion of the maxillary partially connected complete artificial tooth U1 and the first premolar portion 4 of the anterior group artificial tooth 10, the second premolar portion 5 and the first molar portion 6 of the occlusal center group artificial tooth 20, and the second molar portion 7 of the single-site artificial tooth 30 are all constructed with cusps.

[0216] In a detailed description, the maxillary anterior group artificial tooth 10U of the maxillary partial-connected complete artificial tooth U1 has its maxillary first premolar portion 4U, the maxillary occlusal central group artificial tooth 20U has its maxillary second premolar portion 5U and maxillary first molar portion 6U, and the maxillary single-site artificial tooth 30U has its maxillary second molar portion 7U in a cusp-shaped configuration. The mandibular partial-connected complete artificial tooth L1 has its mandibular anterior group artificial tooth 10L has its mandibular first premolar portion 4L, the mandibular occlusal central group artificial tooth 20L has its mandibular second premolar portion 5L and mandibular first molar portion 6L, and the mandibular single-site artificial tooth 30L has its mandibular second molar portion 7L in a cusp-shaped configuration.

[0217] There is no particular limitation on the shape of the canine, but as suitable examples of canines, the artificial tooth shapes shown in Japanese Patent No. 5231398 or Japanese Patent No. 5214621 can be selected. Furthermore, as mentioned above, in cases where there is no space for artificial teeth due to the shape of the jaw ridge, and where there is a possibility of denture dislodgement during occlusion, the single-site artificial tooth 30 of the second molar portion 7 can be excluded from the configuration. This results in the following effect: even in cases where a canine-shaped artificial tooth is used, the original occlusal relationship with a canine-shaped tooth can be reproduced with higher precision than conventional methods, easily providing a high-quality denture with both aesthetic and functional occlusal relationships.

[0218] exist Figure 6 Other examples of partially connected complete artificial teeth 100 are shown in the side view. Figure 6 In the example shown, the first premolar portion 4 of the anterior group artificial tooth 10 of the mandibular partially connected complete artificial tooth L1, the second premolar portion 5 of the occlusal center group artificial tooth 20, the first molar portion 6, and the second molar portion 7 of the single-site artificial tooth 30 are connected with... Figure 4 The examples shown are the same, all being cuspless. The maxillary partially connected complete artificial tooth U1 includes the first premolar portion 4 of the anterior group artificial tooth 10, the second premolar portion 5 and first molar portion 6 of the occlusal center group artificial tooth 20, and the second molar portion 7 of the single-site artificial tooth 30. Figure 5 The examples shown are the same, all consisting of a toothed cusp.

[0219] In a detailed description, in the partially connected complete mandibular prosthesis L1, the occlusal surfaces of the mandibular first premolar portion 4L of the mandibular anterior group prosthesis 10L, the mandibular second premolar portion 5L and the mandibular first molar portion 6L of the mandibular occlusal center group prosthesis 20L coincide with the virtual occlusal plane P1 of the denture. The mandibular first premolar portion 4L of the mandibular anterior group prosthesis 10L, the mandibular second premolar portion 5L and the mandibular first molar portion 6L of the mandibular occlusal center group prosthesis 20L, and the mandibular second molar portion 7L of the single mandibular portion prosthesis 30L are all constructed in a cuspless form. The maxillary partial-connected complete artificial tooth U1 consists of the maxillary anterior tooth group artificial tooth 10U, the maxillary first premolar portion 4U, the maxillary occlusal center group artificial tooth 20U, the maxillary second premolar portion 5U and the maxillary first molar portion 6U, and the maxillary single-site artificial tooth 30U, the maxillary second molar portion 7U, all of which are cusped in shape.

[0220] In the maxillary partially connected complete prosthesis U1 with cusp-shaped teeth, in order to achieve occlusal contact with the mandibular partially connected complete prosthesis L1 without cusp-shaped teeth in a state of non-aperture adjustment curvature, a contact area f1 orthogonal to the virtual occlusal plane P1 of the prosthesis can be selected between the first premolar portion 4 and the second premolar portion 5. Furthermore, a contact area f5 orthogonal to the virtual occlusal plane P1 of the prosthesis can also be selected between the first molar portion 6 and the second molar portion 7. Alternatively, as described above, in cases where there is no space for artificial teeth arrangement due to the shape of the jaw ridge, or where there is a possibility of denture dislodgement during occlusion, it is possible to choose whether or not to exclude the single-site artificial tooth 30 of the second molar portion 7 from the configuration. This has the following effect: as the mandibular occlusal surface wears down against the cusp of the opposing maxillary tooth, the sampling point becomes constricted to a fixed position, thus easily providing therapeutic prostheses for patients with unstable jaw positions or irregular sampling points, as described above.

[0221] Industrial availability

[0222] This invention relates to artificial teeth and can be used industrially.

Claims

1. A partially connected complete dental prosthesis (100) with adjustable arch and occlusal curvature, comprising: Partially connected complete artificial teeth for the maxilla (U1); and Partially connected complete artificial teeth for the mandible (L1). The maxillary partially connected complete artificial tooth (U1) has the following characteristics: The maxillary anterior dental prosthesis (10U) has eight parts fixed to the center of the partially connected complete dental prosthesis (U1) in the left and right sides: the maxillary central incisor part (1U), the maxillary lateral incisor part (2U), the maxillary canine part (3U), and the maxillary first premolar part (4U); and The maxillary occlusal central group artificial tooth (20U) is connected and fixed to the maxillary second premolar portion (5U) and the maxillary first molar portion (6U) on the right and left sides of the maxillary partially connected complete artificial tooth (U1), respectively. The maxillary occlusal central group artificial tooth (20U) is also connected to the maxillary anterior group artificial tooth (10U). The maxillary partially connected complete artificial tooth (U1) is configured such that, on the right and left sides of the maxillary partially connected complete artificial tooth (U1), an artificial tooth (30U) of a single part of the maxillary jaw including the maxillary second molar part (7U) can be joined to the maxillary occlusal center group artificial tooth (20U). The partially connected complete mandibular prosthesis (L1) has the following characteristics: The mandibular anterior dental prosthesis (10L) is centrally connected to the mandibular partially connected complete dental prosthesis (L1), and consists of eight parts: the mandibular central incisor part (1L), the mandibular lateral incisor part (2L), the mandibular canine part (3L), and the mandibular first premolar part (4L), which are located on the left and right sides; and The mandibular occlusal central group artificial tooth (20L) is connected and fixed to the mandibular second premolar portion (5L) and mandibular first molar portion (6L) on the right and left sides of the mandibular partially connected complete artificial tooth (L1), respectively. The mandibular occlusal central group artificial tooth (20L) is also connected to the mandibular anterior group artificial tooth (10L). The partially connected complete mandibular prosthesis (L1) is configured such that, on the right and left sides of the partially connected complete mandibular prosthesis (L1), a single mandibular prosthesis (30L) including the second mandibular molar (7L) can be joined to the mandibular occlusal center group prosthesis (20L). The distal surface (4dU) of the maxillary first premolar (4U) is provided with a region formed by two cylindrical surfaces, which intersect the virtual occlusal plane (P1) of the denture at different angles on the occlusal side and the abutment side, respectively. The mesial surface (5mU) of the maxillary second premolar (5U) has a region formed by a cylindrical surface. When the tooth has a cusp, this cylindrical surface is orthogonal to the surface (P2U) formed by the buccal and lingual cusps of the maxillary second premolar (5U) and the mesial-lingual cusp of the maxillary first molar (6U). When the tooth does not have a cusp, it is orthogonal to the occlusal surface (P2'U) of the maxillary second premolar (5U) and the maxillary first molar (6U). A contact area is formed in which either the occlusal cylindrical surface or the basal cylindrical surface of the distal surface (4dU) of the maxillary first premolar (4U) contacts the cylindrical surface of the mesial surface (5mU) of the maxillary second premolar (5U). The distal surface (4dL) of the mandibular first premolar (4L) is provided with a region formed by two cylindrical surfaces, which intersect the virtual occlusal plane (P1L) of the denture at different angles on the occlusal and basal sides, respectively. On the mesial surface (5mL) of the mandibular second premolar (5L), there is a region formed by a cylindrical surface. When the cylindrical surface has a cusp, it is orthogonal to the surface (P2L) formed by the buccal and lingual cusps of the mandibular second premolar (5L) and the mesial-lingual cusp of the mandibular first molar (6L). When the cylindrical surface does not have a cusp, it is orthogonal to the occlusal surface (P2'L) of the mandibular second premolar (5L) and the mandibular first molar (6L). A contact area is formed in which either the occlusal cylindrical surface or the basal cylindrical surface of the distal surface (4dL) of the mandibular first premolar (4L) contacts the cylindrical surface of the mesial surface (5mL) of the mandibular second premolar (5L). In the maxillary partially connected complete dental prosthesis (U1), when the occlusal surface of the distal surface (4dU) of the maxillary first premolar (4U) contacts the cylindrical surface of the mesial surface (5mU) of the maxillary second premolar (5U) to form a first contact area (f1), in the mandibular partially connected complete dental prosthesis (L1), the basal surface of the distal surface (4dL) of the mandibular first premolar (4L) contacts the cylindrical surface of the mesial surface (5mL) of the mandibular second premolar (5L) to form a second contact area (f2). In the maxillary partially connected complete artificial tooth (U1), when the cylindrical surface of the distal surface (4dU) of the maxillary first premolar (4U) contacts the cylindrical surface of the mesial surface (5mU) of the maxillary second premolar (5U) to form a third contact area (f3), in the mandibular partially connected complete artificial tooth (L1), when the cylindrical surface of the distal surface (4dL) of the mandibular first premolar (4L) contacts the cylindrical surface of the mesial surface (5mL) of the mandibular second premolar (5L) to form a fourth contact area (f4).

2. The partially connected complete artificial tooth according to claim 1, wherein, When the first contact area (f1) is formed in the maxillary partially connected complete artificial tooth (U1), and the second contact area (f2) is formed in the mandibular partially connected complete artificial tooth (L1), the first contact area (f1) and the second contact area (f2) each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is as follows, and it is orthogonal to the virtual occlusal plane (P1) of the denture.

3. The partially connected complete artificial tooth according to claim 1, wherein, When the third contact area (f3) is formed in the maxillary partially connected complete prosthesis (U1) and the fourth contact area (f4) is formed in the mandibular partially connected complete prosthesis (L1), the third contact area (f3) and the fourth contact area (f4) each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is as follows, and intersects the virtual occlusal plane (P1) of the denture with an interior angle (θ1U, ​​θ1L) of more than 70° and less than 90°.

4. The partially connected complete artificial tooth according to claim 1, wherein, In the maxillary partially connected complete denture prosthesis (U1), the maxillary single-site prosthesis (30U) is engaged with the maxillary occlusal central group prosthesis (20U), and in the mandibular partially connected complete denture prosthesis (L1), when the mandibular single-site prosthesis (30L) is engaged with the mandibular occlusal central group prosthesis (20L), The distal surface (6dU) of the maxillary first molar portion (6U) of the maxillary occlusal center group artificial tooth (20U) is provided with a region formed by two cylindrical surfaces. The two cylindrical surfaces intersect the virtual occlusal plane (P1) of the denture at different angles on the occlusal side and the abutment side, respectively. The mesial surface (7mU) of the maxillary second molar (7U) is provided with a region formed by a cylindrical surface. When the tooth has a cusp, this cylindrical surface is orthogonal to the surface (P3U) formed by the mesobuccal cusp, meslingular cusp, and distobuccal cusp of the maxillary second molar (7U). When the tooth does not have a cusp, it is orthogonal to the occlusal surface (P3'U) of the maxillary second molar (7U). Either the cylindrical surface on the occlusal side or the cylindrical surface on the basal side of the maxillary first molar (6U) forms a contact area with the cylindrical surface of the mesial surface (7mU) of the maxillary second molar (7U). The distal surface (6dL) of the mandibular first molar portion (6L) of the mandibular occlusal center group artificial tooth (20L) is provided with a region formed by two cylindrical surfaces. The two cylindrical surfaces intersect the virtual occlusal plane (P1) of the denture at different angles on the occlusal side and the abutment side, respectively. On the mesial surface (7mL) of the mandibular second molar (7L), there is a region formed by a cylindrical surface. When the tooth has a cusp, this cylindrical surface is orthogonal to the surface (P3L) formed by the mesial buccal cusp, mesial lingual cusp, and distobuccal cusp of the mandibular second molar (7L). When the tooth does not have a cusp, it is orthogonal to the occlusal surface (P3'L) of the mandibular second molar (7L). The cylindrical surface on the occlusal side and the cylindrical surface on the basal side of the first mandibular molar (6L) forms a contact area with the cylindrical surface of the mesial surface (7mL) of the second mandibular molar (7L). In the maxillary partially connected complete dental prosthesis (U1), when the occlusal surface of the distal surface (6dU) of the maxillary first molar (6U) contacts the cylindrical surface of the mesial surface (7mU) of the maxillary second molar (7U) to form a fifth contact area (f5), in the mandibular partially connected complete dental prosthesis (L1), the basal surface of the distal surface (6dL) of the mandibular first molar (6L) contacts the cylindrical surface of the mesial surface (7mL) of the mandibular second molar (7L) to form a sixth contact area (f6). In the maxillary partially connected complete artificial tooth (U1), when the cylindrical surface of the distal surface (6dU) of the maxillary first molar (6U) on the basal side contacts the cylindrical surface of the mesial surface (7mU) of the maxillary second molar (7U) to form a seventh contact area (f7), in the mandibular partially connected complete artificial tooth (L1), when the cylindrical surface of the distal surface (6dL) of the mandibular first molar (6L) on the occlusal side contacts the cylindrical surface of the mesial surface (7mL) of the mandibular second molar (7L) to form an eighth contact area (f8).

5. The partially connected complete artificial tooth according to claim 4, wherein, When the fifth contact area (f5) is formed in the maxillary partially connected complete prosthesis (U1), and the sixth contact area (f6) is formed in the mandibular partially connected complete prosthesis (L1), the fifth contact area (f5) and the sixth contact area (f6) each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is as follows, and it is orthogonal to the virtual occlusal plane (P1) of the denture.

6. The partially connected complete artificial tooth according to claim 4, wherein, When the seventh contact region (f7) is formed in the maxillary partially connected complete prosthesis (U1), and the eighth contact region (f8) is formed in the mandibular partially connected complete prosthesis (L1), the seventh contact region (f7) and the eighth contact region (f8) each have a diameter of 0.01 mm. 2 Above 10.0mm 2 The contact area is as follows, and intersects the virtual occlusal plane (P1) of the denture with an interior angle (θ2U, θ2L) of more than 40° and less than 90°.

7. The partially connected complete artificial tooth according to any one of claims 1 to 6, wherein, In the partially connected complete mandibular prosthesis (L1), the occlusal surfaces of the mandibular first premolar portion (4L) of the mandibular anterior group prosthesis (10L), the mandibular second premolar portion (5L) and the mandibular first molar portion (6L) of the mandibular occlusal center group prosthesis (20L) coincide with the virtual occlusal plane (P1) of the denture. The maxillary anterior dentition artificial tooth (10U) of the partially connected complete maxillary prosthesis (U1) has a maxillary partial occlusal surface at the cusp (3cU) that is parallel to the virtual occlusal plane (P1) of the denture. The maxillary first premolar portion (4U) of the maxillary anterior group artificial tooth (10U), the maxillary second premolar portion (5U) and the maxillary first molar portion (6U) of the maxillary occlusal center group artificial tooth (20U), and the maxillary second molar portion (7U) of the maxillary single-site artificial tooth (30U) are all constructed in a cuspless form. The mandibular partial-connected complete artificial tooth (L1) and the mandibular anterior dentition artificial tooth (10L) have a mandibular partial occlusal surface (3L) at the cusp (3cL) that is parallel to the virtual occlusal plane (P1) of the denture. The mandibular first premolar portion (4L) of the mandibular anterior group artificial tooth (10L), the mandibular second premolar portion (5L) and the mandibular first molar portion (6L) of the mandibular occlusal center group artificial tooth (20L), and the mandibular second molar portion (7L) of the mandibular single-site artificial tooth (30L) are configured in a cuspless form.

8. The partially connected complete artificial tooth according to any one of claims 1 to 6, wherein, The maxillary partial-connected complete artificial teeth (U1) comprises the maxillary anterior group artificial teeth (10U) with the maxillary first premolar portion (4U), the maxillary occlusal center group artificial teeth (20U) with the maxillary second premolar portion (5U), the maxillary first molar portion (6U), and the maxillary single-site artificial teeth (30U) with the maxillary second molar portion (7U) having a cusp shape. The mandibular partial-connected complete artificial tooth (L1) comprises the mandibular anterior group artificial tooth (10L) with the mandibular first premolar portion (4L), the mandibular occlusal center group artificial tooth (20L) with the mandibular second premolar portion (5L) and the mandibular first molar portion (6L), and the mandibular single-site artificial tooth (30L) with the mandibular second molar portion (7L) having a cusp shape.

9. The partially connected complete artificial tooth according to any one of claims 1 to 6, wherein, In the partially connected complete mandibular prosthesis (L1), the occlusal surfaces of the mandibular first premolar portion (4L) of the mandibular anterior group prosthesis (10L), the mandibular second premolar portion (5L) and the mandibular first molar portion (6L) of the mandibular occlusal center group prosthesis (20L) coincide with the virtual occlusal plane (P1) of the denture. The mandibular partial-connected complete artificial tooth (L1) comprises the mandibular anterior tooth group artificial tooth (10L) comprising the mandibular first premolar portion (4L), the mandibular occlusal center group artificial tooth (20L) comprising the mandibular second premolar portion (5L) and the mandibular first molar portion (6L), and the mandibular single-site artificial tooth (30L) comprising the mandibular second molar portion (7L) in a cuspless form. The maxillary partial-connected complete artificial tooth (U1) comprises the maxillary anterior tooth group artificial tooth (10U) with the maxillary first premolar portion (4U), the maxillary occlusal center group artificial tooth (20U) with the maxillary second premolar portion (5U) and the maxillary first molar portion (6U), and the maxillary single-site artificial tooth (30U) with the maxillary second molar portion (7U) having a cusp shape.

Images