Dental tray

Abstract

The utility model provides a dental tray, which is used for preparing an initial impression of an edentulous jaw, and comprises a body provided with a plurality of through holes used for fixing impression materials; the handle is connected with the body; wherein the body is similar to an anatomical part in an oral cavity in shape. According to the utility model, the applicability, the generality and the accuracy of the preparation of the primary impression of most patients with toothless complete mouths can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dental model making, in particular to a dental tray. Background Art

[0002] The restoration concept of full-mouth suction dentures requires that the initial impression of the full-mouth edentulous jaw must truly reflect the anatomical morphology of the alveolar bone and corresponding soft tissue in the oral cavity without pressure, which is also called a pressure-free impression (or anatomical impression). On this basis, individual trays are made to make pressure impressions (or functional impressions, closed-mouth impressions). Full-mouth edentulous jaw trays are crucial for making initial impressions. On the one hand, they must ensure that they will not compress local tissues and cause soft tissue deformation. On the other hand, they must be able to cover important anatomical structures (such as the maxillary posterior bank area, the area below the mylohyoid ridge, the molar retromolar pad, etc.). They are an important basis for the final impression and subsequent denture production. At present, there are many types of trays for making initial impressions of edentulous jaws, but there are still problems such as insufficient coverage, compression of mucosal tissues, and inappropriate size. Utility Model Content

[0003] The utility model aims to provide a dental tray to improve the applicability, versatility and accuracy of making initial impressions for most full-mouth edentulous patients.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0005] A dental tray for making a preliminary impression of an edentulous jaw, the dental tray comprising:

[0006] A body, provided with a plurality of through holes, wherein the plurality of through holes are used to fix the impression material;

[0007] A handle connected to the body;

[0008] Wherein, the body is shaped like an anatomical part in the oral cavity.

[0009] In some embodiments of the present invention, the plurality of through holes are configured to be bilaterally symmetrical about the central axis of the body, or are located on the central axis of the body;

[0010] And / or, the handle is centrally arranged at an edge of the body.

[0011] In some embodiments of the present invention, the dental tray comprises a maxillary tray.

[0012] In some embodiments of the utility model, the projection profile of the body of the maxillary tray in the thickness direction is trapezoidal or shovel-shaped.

[0013] In some embodiments of the present invention, the middle portion of the body of the maxillary tray is configured to fit the hard palate and the front portion of the soft palate of a person;

[0014] Part of the periphery of the body of the maxillary tray is configured to adapt to the upper alveolar ridge and vestibule groove of a person, and the rearmost periphery on the buccal side is in an arc shape.

[0015] In some embodiments of the present invention, the through hole is provided at the portion of the body of the maxillary tray corresponding to the upper alveolar ridge.

[0016] In some embodiments of the present invention, the through hole is provided on the outer side of the peripheral portion of the body of the maxillary tray corresponding to the upper alveolar ridge.

[0017] In some embodiments of the present invention, the dental tray comprises a mandibular tray.

[0018] In some embodiments of the utility model, the outer contour of the projection of the body of the mandibular tray in the thickness direction is U-shaped, and the inner contour is V-shaped with a smooth transition.

[0019] In some embodiments of the present invention, the inner contour of the body of the mandibular tray is configured to adapt to the soft and hard tissues of the mandibular lingual side of a person;

[0020] Part of the periphery of the body of the mandibular tray is configured to adapt to the human inferior alveolar ridge and vestibule groove, wherein the outer edges of the distal buccal angle area and the retromolar pad area are absent.

[0021] In some embodiments of the utility model, the through hole is provided on the portion of the body of the mandibular tray corresponding to the lower alveolar ridge.

[0022] In some embodiments of the utility model, the through hole is provided on the inner side of the body of the mandibular tray corresponding to the periphery of the retromolar pad portion.

[0023] In some embodiments of the present invention, the inner side profile of the body of the mandibular tray is provided with a groove.

[0024] In some embodiments of the present invention, the main body of the mandibular tray protrudes in a direction away from the lower alveolar ridge to form an elliptical boss.

[0025] In some embodiments of the present invention, the surface of the handle is provided with strip-shaped raised patterns.

[0026] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0027] The utility model provides a dental tray, which improves the applicability, versatility and accuracy of making initial impressions for most full-mouth edentulous patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some implementation plans of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic structural diagram of a dental tray provided in a first embodiment of the utility model at a first viewing angle;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure of the dental tray in the second observation angle;

[0031] Figure 3 for Figure 1 A schematic structural diagram of a dental tray in a third viewing angle;

[0032] Figure 4 for Figure 1 A schematic structural diagram of a dental tray in a fourth viewing angle;

[0033] Figure 5 for Figure 1 A schematic structural diagram of a dental tray in a fifth viewing angle;

[0034] Figure 6 for Figure 1 A schematic structural diagram of a dental tray in a sixth viewing angle;

[0035] Figure 7 for Figure 1 A schematic structural diagram of a dental tray in a seventh viewing angle;

[0036] Figure 8 for Figure 1 A schematic structural diagram of a dental tray in an eighth viewing angle;

[0037] Fig. 9 for Figure 1 A schematic structural diagram of a dental tray in a ninth viewing angle;

[0038] Fig.10 A schematic structural diagram of a dental tray provided by the second embodiment of the utility model at a tenth viewing angle;

[0039] Fig.11 for Fig.10 A schematic diagram of the structure of the dental tray at an eleventh viewing angle;

[0040] Fig.12for Fig.10 A schematic structural diagram of a dental tray in the twelfth viewing angle;

[0041] Fig.13 for Fig.10 A schematic structural diagram of a dental tray in a thirteenth viewing angle;

[0042] Fig.14 for Fig.10 A schematic structural diagram of a dental tray in a fourteenth viewing angle;

[0043] Fig.15 for Fig.10 A schematic diagram of the structure of the dental tray at a fifteenth viewing angle;

[0044] Fig.16 for Fig.10 A schematic structural diagram of a dental tray at a sixteenth viewing angle;

[0045] Fig.17 for Fig.10 A schematic structural diagram of a dental tray in the seventeenth viewing angle;

[0046] Fig.18 for Fig.10 Schematic diagram of the structure of the dental tray at an eighteenth viewing angle.

[0047] The main reference numerals in the drawings of this application specification are described as follows:

[0048] 1-body; 11-through hole; 12-boss;

[0049] 2-Handle. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0051] Any specific numerical value disclosed herein (including the endpoint of the numerical range) is not limited to the exact value of the numerical value, but should be understood to also cover values ​​close to the exact value, such as all possible numerical values ​​within the range of ±5% of the exact value. In addition, for the disclosed numerical range, the endpoint values ​​of the range, the endpoint values ​​and the specific point values ​​in the range, and the specific point values ​​can be arbitrarily combined to obtain one or more new numerical ranges, and these new numerical ranges should also be regarded as specifically disclosed herein.

[0052] Unless otherwise specified, the terms used herein have the same meaning as commonly understood by those skilled in the art. If a term is defined herein and its definition is different from the commonly understood meaning in the art, the definition herein shall prevail.

[0053] See also Figures 1 to 18 A dental tray is used for making a preliminary impression of an edentulous jaw. The dental tray comprises: a body 1, provided with a plurality of through holes 11, wherein the plurality of through holes 11 are used to fix the impression material; a handle 2, connected to the body 1; wherein the body 1 is shaped like an anatomical part in the oral cavity.

[0054] Specifically, during use, the prepared impression material is evenly placed on the inner surface of the tray, and then the tray is placed in the oral cavity, and the side of the tray containing the impression material is aligned with the anatomical part in the oral cavity and pressurized gently and slowly to produce an impression that accurately imitates the anatomical part of the oral cavity, and then the tray can be taken out of the oral cavity for subsequent processing of the impression. Among them, because the main body 1 of the tray provided by the utility model imitates the anatomical part of the oral cavity and has appropriate buffering and avoidance, the tray will not compress the local mucosal tissue to cause soft tissue deformation, and can also cover important anatomical structures, thereby improving the applicability and accuracy of the tray.

[0055] In addition, it is worth noting that in some embodiments of the present invention, the dental tray can be used to make impressions and subsequent dentures for patients with complete edentulous mouths, so the dental tray provided by the present invention also has good versatility.

[0056] In some embodiments of the present invention, the above-mentioned impression material may specifically be alginate, and a more specific composition formula may be selected and adjusted according to the actual application scenario.

[0057] In some embodiments of the present invention, the body 1 and the handle 2 can be integrally formed, or two components of separate design can be directly connected in various feasible ways or indirectly connected through other structures, and no strict restrictions are made here, as long as the user can hold the handle 2 to control and move the position of the body 1. The surface of the handle 2 is provided with strip-shaped raised patterns, which is convenient for holding firmly and observing the position of the tray when taking the mold.

[0058] See also Figures 1 to 18 In some embodiments of the present invention, the plurality of through holes 11 are configured to be symmetrical about the central axis of the main body 1, or are located on the central axis of the main body 1; it can be understood that the number and specific position distribution of the above-mentioned through holes 11 can be selected and adjusted according to actual application requirements, as long as it can ensure that the impression material can be firmly fixed on the main body 1 of the tray.

[0059] See also Figures 1 to 18 In some embodiments of the present invention, the handle 2 is centrally arranged at the edge of the body 1. Obviously, this centrally symmetrical design is convenient for users to hold and operate.

[0060] See also Figures 1 to 9 In some embodiments of the present invention, the dental tray includes a maxillary tray so as to be able to make a preliminary impression of the edentulous jaw for the maxillary structure in the oral cavity.

[0061] See also Figures 1 to 9 In some embodiments of the present invention, the projection profile of the body 1 of the maxillary tray in the thickness direction is trapezoidal or shovel-shaped to imitate the shape and size of the anatomical part in the oral cavity.

[0062] See also Figures 1 to 9 In some embodiments of the utility model, the middle part of the main body 1 of the maxillary tray is configured to adapt to the human hard palate and the front part of the soft palate; part of the periphery of the main body 1 of the maxillary tray is configured to adapt to the human upper alveolar ridge and vestibule groove, and the rearmost periphery on the buccal side is an arc shape.

[0063] See also Figures 1 to 9 In some embodiments of the present invention, the through hole 11 is provided at the portion of the body 1 of the maxillary tray corresponding to the upper alveolar ridge.

[0064] See also Figures 1 to 9 In some embodiments of the present invention, the through hole 11 is provided on the outer side of the periphery of the main body of the maxillary tray corresponding to the upper alveolar ridge.

[0065] In some embodiments of the utility model, the basic form of the maxillary tray is a semicircular shape with a handle at the front end, which is adapted to the anatomical parts of the alveolar bone, hard palate, oral vestibule, maxillary tuberosity, etc. of the edentulous maxilla of a human being, and is symmetrical about the left and right axes of the center line. The center of the semicircular main body is a curved depression to correspond to the hard palate; the middle groove area is in an arc shape to correspond to the alveolar ridge; the outer (lip and cheek) edge extends upward and outward, and is in a "V" shape in the middle of the front end to correspond to the frenulum of the upper lip, and is gently depressed at the junction of the front 1 / 3 and the back 2 / 3 of the outer edge to correspond to the buccal soft tissue of the oral vestibule groove; the tray gradually widens from the front to the back, and the rear end is the widest part; the handle is wide and flat, and is connected to the main body in an "L" shape; in order to increase the mechanical bonding force between the impression material such as alginate and the tray, a through hole 11 is designed at the corresponding part of the main body of the tray.

[0066] See also Figures 10 to 18 In some embodiments of the present invention, the dental tray includes a mandibular tray so as to be able to make a preliminary impression of the edentulous jaw for the mandibular structure in the oral cavity.

[0067] See also Figures 10 to 18 In some embodiments of the utility model, the outer contour of the projection of the main body 1 of the mandibular tray in the thickness direction is U-shaped, and the inner contour is a smoothly transitioned V-shape to imitate the shape and size of the anatomical part in the oral cavity; wherein the smoothly transitioned V-shaped inner contour can conveniently accommodate the tongue to avoid crowding and interference between the mandibular tray and the tongue during the impression making process.

[0068] See also Figures 10 to 18 In some embodiments of the utility model, the inner contour of the main body 1 of the mandibular tray is configured to adapt to the soft and hard tissues of the mandibular lingual side of a person; part of the periphery of the main body 1 of the mandibular tray is configured to adapt to the lower alveolar ridge and vestibular groove of a person, wherein the outer edges of the distal buccal angle area and the retromolar pad area are absent. It is worth noting that "absence" in the medical field refers to the parts that should be present in a normal human body (such as organs, tissues, genes, etc.), and the absence of certain parts in the human body is called absence, such as the absence of the diaphragm, the absence of the atlas, and the absence of fingers; or the lack of certain structures compared to other similar structures and functional parts, such as the absence of the basement membrane of the endothelial cells of the sinusoids; and "absence of the outer edges of the distal buccal angle area and the retromolar pad area" means that the outer edges of the distal buccal angle area and the retromolar pad area do not exist.

[0069] See also Figures 10 to 18In some embodiments of the utility model, the through hole 11 is provided on the part of the body 1 of the mandibular tray corresponding to the lower alveolar ridge. It is worth noting that in order to enhance the gripping force and bonding firmness between the above-mentioned soft impression material and the tray body 1, the contact area between the impression material and the tray body 1 can be increased by providing the through hole 11. On the one hand, the bonding strength can be enhanced by increasing the contact area, and on the other hand, a part of the impression material can be stuck in the through hole 11 to further enhance the bonding strength; the specific design position distribution and number of the above-mentioned through holes 11 can be designed according to actual needs.

[0070] See also Figures 10 to 18 In some embodiments of the utility model, the through hole 11 is provided on the inner side of the body 1 of the mandibular tray corresponding to the periphery of the retromolar pad portion.

[0071] See also Figures 10 to 18 In some embodiments of the present invention, the inner contour of the body 1 of the mandibular tray is provided with a groove.

[0072] See also Figures 10 to 18 In some embodiments of the present invention, the main body 1 of the mandibular tray is formed with an elliptical boss 12 protruding in a direction away from the lower alveolar ridge.

[0073] See also Figure 5 and Fig.14 In some embodiments of the utility model, the surface of the handle 2 is provided with strip-shaped raised patterns, which are convenient for holding firmly and observing the position of the tray when taking the mold.

[0074] In some embodiments of the utility model, the diameter of the through hole 11 of the maxillary tray can be 4 mm and / or 2.5 mm, wherein the number of the through holes 11 with a diameter of 4 mm can be 9, and the number of the through holes 11 with a diameter of 2.5 mm can be 8; the diameter of the through holes 11 of the mandibular tray can be 4 mm and / or 2.5 mm, wherein the number of the through holes 11 with a diameter of 4 mm can be 5, and the number of the through holes 11 with a diameter of 2.5 mm can be 4.

[0075] In some embodiments of the utility model, the basic form of the mandibular tray is a "C" shape with a handle at the front end, which is adapted to the basic form of the human edentulous mandible and is symmetrical about the left and right axes of the center line. The front 2 / 3 of the outer side (lip and cheek side) extends slightly downward and outward, and the front end is in a "V" shape in the middle to correspond to the frenulum of the lower lip; the back 1 / 3 does not extend downward and outward but terminates in a straight line just above to correspond to the buccal flange area and the distal buccal angle area; the inner side (lingual side) extends downward in an arc to fully cover below the mylohyoid ridge; the handle is wide and flat and connected to the main body in an "L" shape. In order to increase the mechanical bonding force between the alginate and other impression materials and the tray, a through hole 11 is designed at the corresponding position of the main part of the tray, and a shallow groove-shaped horizontal linear protrusion is designed at 2-3mm from the highest point on the inner side (lingual side). In order to facilitate pressing and fixing during mold taking, finger-like protrusions are designed above the middle of both sides.

[0076] It is worth noting that the maxillary tray and mandibular tray provided by the utility model can be designed into multiple sizes according to the size of the patient's oral cavity. For example, the maxillary tray and mandibular tray can be designed into five different sizes respectively to adapt to patients of different ages or different head circumferences to obtain impressions with higher precision.

[0077] The utility model also provides an implementation method based on the above dental tray, as described below: 1. Carefully check the basic oral conditions of edentulous patients, including the morphology and state of alveolar bones, muscle attachments, frenulum, mucosa, and retromolar pads. 2. Use a compass to measure the distance between the outer sides of the left and right maxillary tuberosities and the inner sides of the mandibular retromolar pads, and select a matching model of edentulous initial impression tray. At this time, when the tray is 2 mm away from the corresponding oral soft tissue, no obvious tissue compression occurs and the anatomical part to be produced is just covered. 3. Prepare alginate impression material, pour the impression material into a 20 ml special syringe respectively, and evenly spread it in the selected tray. 4. When making the maxillary initial impression, first use a special syringe to evenly inject the impression material into the vestibule groove of the maxillary buccal flange area, then accurately align the tray containing the impression material, and gently press upward from front to back until the impression material overflows from all sides of the tray, and use both hands to well fix the tray to ensure the stability of the tray until the impression material hardens. 5. When taking the initial impression of the mandible, first use a special syringe for injecting impression material to evenly inject the impression material along the direction of the vestibule groove below the mylohyoid ridge - the retromolar pad - the buccal flange area. Then accurately align the tray containing the impression material and gently press down from front to back until the impression material overflows from all sides of the tray. Use both hands to hold the tray well to ensure its stability until the impression material solidifies.

[0078] The utility model provides a set of dental trays with good anatomical morphology matching and clinical operation adaptability. In some more specific embodiments, it can be an edentulous jaw initial impression tray for edentulous patients, which has the characteristics of simple operation and high accuracy. With the corresponding molding method, the anatomical morphology of the edentulous jaw can be accurately produced, especially the maxillary tuberosity, maxillary posterior bank area, mandibular distal buccal angle area, mandibular lingual flange area and the lower part of the mylohyoid ridge can be produced, laying a good foundation for the production of full-mouth adsorption dentures. At the same time, the edentulous jaw initial impression tray provided by the present invention is not only suitable for experienced oral prosthodontists, but also can be quickly adapted and mastered by beginners.

[0079] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims. In addition, the specification uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core ideas of the utility model. The content of this specification should not be understood as a limitation on the utility model.

Claims

1. A dental tray for making a preliminary impression of an edentulous jaw, characterized in that: The dental tray comprises: The body (1) is provided with a plurality of through holes (11), wherein the plurality of through holes (11) are used to fix the impression material; A handle (2) connected to the body (1); The body (1) is shaped like an anatomical part in the oral cavity.

2. The dental tray according to claim 1, characterized in that The plurality of through holes (11) are arranged to be bilaterally symmetrical about the central axis of the body (1), or are located on the central axis of the body (1); And / or, the handle (2) is centrally arranged at an edge position of the body (1).

3. The dental tray according to claim 1 or 2, characterized in that: The dental tray comprises a maxillary tray.

4. The dental tray according to claim 3, characterized in that The projection profile of the body (1) of the maxillary tray in the thickness direction is trapezoidal or shovel-shaped.

5. The dental tray according to claim 3, characterized in that The middle portion of the body (1) of the maxillary tray is configured to fit the hard palate and the front part of the soft palate of a person; Part of the periphery of the main body (1) of the maxillary tray is configured to adapt to the upper alveolar ridge and vestibular groove of a person, and the rearmost periphery on the buccal side is in an arc shape.

6. The dental tray according to claim 3, characterized in that The through hole (11) is provided at a portion of the body (1) of the maxillary tray corresponding to the upper alveolar ridge.

7. The dental tray according to claim 3, characterized in that The through hole (11) is provided on the outer side of the peripheral portion of the body of the maxillary tray corresponding to the upper alveolar ridge.

8. The dental tray according to claim 1 or 2, characterized in that: The dental tray comprises a mandibular tray.

9. The dental tray according to claim 8, characterized in that The outer contour of the projection of the main body (1) of the mandibular tray in the thickness direction is U-shaped, and the inner contour is V-shaped with a smooth transition.

10. The dental tray according to claim 8, characterized in that The inner contour of the body (1) of the mandibular tray is configured to adapt to the soft and hard tissues of the mandibular lingual side of a person; Part of the periphery of the main body (1) of the mandibular tray is configured to adapt to the human lower alveolar ridge and vestibular groove, wherein the outer edges of the distal buccal angle area and the retromolar pad area are absent.

11. The dental tray according to claim 10, characterized in that The through hole (11) is provided on the body (1) of the mandibular tray at a portion corresponding to the lower alveolar ridge.

12. The dental tray according to claim 10, characterized in that The through hole (11) is provided on the inner side of the body (1) of the mandibular tray corresponding to the periphery of the retromolar pad portion.

13. The dental tray according to claim 10, characterized in that The inner contour of the body (1) of the mandibular tray is provided with a groove.

14. The dental tray according to claim 10, characterized in that The main body (1) of the mandibular tray is formed with an elliptical boss (12) protruding in a direction away from the lower alveolar ridge.

15. The dental tray according to claim 1, characterized in that The surface of the handle (2) is provided with strip-shaped raised patterns.

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