Method for making a digitalized complete denture

Abstract

The application discloses a kind of production methods of digital active complete denture, first according to the oral data of patient, pours and takes plaster model;The plaster model is scanned, and detection type active denture is made;Detection and adjustment of each production index are detected and adjusted by wearing detection type active denture, and each production index of detection and adjustment is input into software, the arrangement of artificial tooth and the design of base are completed, and then resin base and artificial tooth are made respectively, resin base, artificial tooth and upper and lower jaw plaster model are assembled on bite frame, silicon rubber is used to print upper and lower jaw artificial tooth negative mould, and finished product resin tooth is placed in negative mould, fixed, filled with glue, polished, and then obtained.The production cycle of the method is short, which reduces the burden of patients and also reduces the operation difficulty of doctors.

Description

Technical Field

[0001] This invention relates to the field of complete denture fabrication, specifically to a method for fabricating a digital removable complete denture. Background Technology

[0002] As the country enters an aging society, the proportion of people over 65 years old who have no teeth has exceeded 6.8%. If teeth are not restored after loss, the alveolar bone will be absorbed very quickly, and the jawbone will gradually shrink. This will not only affect a person's facial appearance, but also reduce or eliminate chewing efficiency.

[0003] Currently, the main restorative methods for patients with complete edentulism are edentulous jaw implants and removable complete dentures. Idulous jaw implant restorations are prohibitively expensive due to drawbacks such as high patient tolerance for surgery and a long restoration period, thus deterring most patients with complete edentulism. Therefore, removable complete dentures are the preferred option. With the popularization of digital dental restoration technology, digital removable complete denture technology has also matured, but the following shortcomings still exist in its fabrication:

[0004] 1. Patients typically need to visit the hospital multiple times to take impressions, confirm the correct occlusion, and the procedure is very complicated. Specifically, the clinician first takes an impression of the patient, then sends the plaster model to the fabrication lab for scanning. A personalized tray is then created by the clinician using digital software or by the clinician themselves, and a second impression is taken using this tray. This second impression is then sent to the fabrication lab for scanning to create a 3D-printed wax-lined trial denture. The patient confirms the occlusion, including the labial-dental relationship in the anterior region and aesthetics, by trying on the denture. The confirmed parameters are then sent back to the fabrication lab for another scan of the plaster model to confirm the occlusion. The tooth arrangement and denture base are then designed using design software. The resin base and artificial teeth are fabricated separately using a 3D printer or digital cutting equipment. The base and artificial teeth are then bonded together as a single unit, and finally, the denture is ground, polished, and completed.

[0005] The above procedures are time-consuming, requiring patients to make multiple trips to the hospital. This not only inconveniences patients but also increases the difficulty of the procedure for doctors, prolongs the denture manufacturing cycle, and increases production costs.

[0006] 2. Currently, 3D printed base materials, resin dental materials, or cutting materials on the market have not obtained national Class III medical device registration certificates and production licenses, and therefore cannot be sold normally on the market.

[0007] 3. The existing 3D printing resin dental materials or cutting materials on the market are inferior to conventional finished resin dental products in terms of hardness, wear resistance, aesthetics, and smoothness. Summary of the Invention

[0008] To reduce the fabrication cycle of removable complete dentures, lower the operational difficulty for dentists, and reduce treatment costs for patients, this invention aims to provide a method for fabricating digital removable complete dentures that utilizes advanced digital design and fabrication processes while avoiding the shortcomings of current digital removable complete denture fabrication methods, and provides patients with digital products that meet national industry standards.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A method for fabricating a digitally movable complete denture, the fabrication process of which is as follows:

[0011] 1. Take an impression based on the patient's oral cavity data and pour out a plaster model;

[0012] 2. Scan the plaster model from step one to fabricate a diagnostic removable denture;

[0013] Third, wear a testing denture to test and adjust various manufacturing indicators in order to determine the various manufacturing indicators required for the later production of digital removable complete dentures;

[0014] Fourth, input the various manufacturing indicators obtained in step three into the software to complete the arrangement of artificial teeth and the design of the denture base. Use a 3D printer or cutting machine to manufacture the resin denture base and artificial dentition separately. Assemble the resin denture base, artificial dentition, and upper and lower jaw plaster models on the occlusal frame according to the determined occlusal relationship. Then, use silicone rubber to print the negative molds of the upper and lower jaw artificial dentition separately. Place the finished resin teeth in the negative molds, fix them, fill them with resin, and polish them to complete the preparation of the digital removable complete denture.

[0015] Furthermore, the removable denture includes a maxillary base, a ridge, teeth, and a mandibular base. The maxillary base has six teeth in the anterior tooth position 3 to 3, and the remaining tooth positions of the maxillary base have a flat ridge. The maxillary base has a maxillary palatal plate in the middle, and the anterior palatal region of the maxillary palatal plate has a cavity that does not penetrate the maxillary palatal plate. The mandibular base has four teeth in the anterior tooth position 2 to 2, and teeth are provided in the 4th, 5th, and 6th tooth positions on both sides of the mandibular base. The 3rd and 7th tooth positions on both sides of the mandibular base are empty.

[0016] Furthermore, the fabrication process of the aforementioned removable denture is as follows:

[0017] (1) Based on the data after scanning the plaster model, the maxillary and mandibular bases were prepared using 3D printing resin materials designed with digital software;

[0018] (2) The midline of the maxillary denture base is determined by the anatomical landmarks of the midpoint of the two palatal fossae on the posterior edge of the maxilla, the palatal suture, the longitudinal midpoint of the incisor papilla and the upper lip frenulum in the scanned plaster model data. The labial and lingual inclination of the upper anterior teeth in the maxillary denture base is determined by judging the patient's Class 1, 2 and 3 occlusion. Based on the above data, the labial and lingual position of the teeth in position 3 to 3 of the anterior tooth area of ​​the maxillary denture base is determined. For the remaining teeth of the maxillary denture base, a flat ridge is set with the alveolar crest as the center. A cavity that does not penetrate the maxillary palatal plate is opened in the mid-region of the anterior palatal part of the maxillary denture base.

[0019] (3) The height of the occlusal plane of the posterior teeth of the maxillary denture base is set at a position 6.5-8.5 mm away from the pterygomaxillary notch, and the height of the occlusal plane of the central incisor region is set at a position 10-12 mm away from the midpoint of the incisor papilla. The maxillary occlusal plane formed by the above height is adjusted so that the maxillary occlusal plane is parallel to the plane formed by the bilateral pterygomaxillary notches and the midpoint of the incisor papilla. The arrangement of the 3rd to 3rd teeth in the anterior teeth of the maxillary denture base is completed according to the height of the maxillary occlusal plane.

[0020] (4) The height of the occlusal plane of the bilateral posterior teeth of the mandibular base is level with the 1 / 2 point of the bilateral mandibular molar retropadding in the scanned plaster model data; the midline of the anterior teeth of the mandibular base is determined by the position of the bilateral mandibular molar retropadding in the scanned data, the position of the lingual frenulum in the anterior part of the mandible, and the already determined midline of the maxilla; the vertical height of the occlusal plane of the anterior teeth of the mandibular base is determined by the vertical height of the already formed posterior part of the maxillary and mandibular base and its relationship with the anterior teeth of the maxillary base.

[0021] (5) Based on the parameters of the above steps, determine the labial and lingual inclination of the anterior teeth in the mandibular base according to the patient's Class 1, 2, and 3 occlusal forms and the labial and lingual inclination of the upper anterior teeth in the maxillary base 1. Arrange the mandibular base anterior teeth 2 to 2 positions, bilateral 4, 5, and 6 positions, and leave bilateral 3 and 7 positions empty according to the above scanning data.

[0022] Furthermore, the fabrication process of the aforementioned digitally activated complete denture is as follows:

[0023] (1) Input the various manufacturing indicators of the test-type removable denture into the software, complete the arrangement of artificial teeth and the design of the base through the software, and manufacture the resin base and artificial tooth row by printing with a 3D printer or cutting with a precision machine tool;

[0024] (2) The prepared resin base, artificial dentition, and the patient's maxillary plaster model and mandibular plaster model are assembled on the occlusal articulator. After the occlusal articulator is closed, the mandibular artificial dentition is removed. A silicone rubber impression of the maxillary artificial dentition is taken from the mandibular base artificial dentition part. The same model of finished resin tooth is placed in the impression determined by digital software. The maxillary base and maxillary artificial dentition are removed. The occlusal relationship is determined on the occlusal articulator by the impression with the finished resin tooth installed, the mandibular base, and the mandibular plaster model. The finished resin tooth in the impression is then fixed to the maxillary plaster model with wax. The impression is removed to complete the molding of the maxillary wax base.

[0025] (3) Reinstall the mandibular artificial dentition that was removed in the above steps, close the occlusal frame, close the maxillary plaster model with the finished resin tooth and wax base with the mandibular artificial dentition, mandibular base and mandibular plaster model, use silicone rubber to take a negative impression on the buccal and lingual sides of the finished resin tooth and mandibular artificial dentition, wrap the finished resin tooth in the upper half of the inner cavity of the negative impression so that the negative impression is fixed to the maxilla, put the same type of finished resin tooth in the lower half of the inner cavity of the negative impression, remove the mandibular base and mandibular artificial dentition, determine the occlusal relationship on the occlusal frame by the negative impression with the finished resin tooth, the wax base and finished resin tooth installed, and the mandibular plaster model, and then fix the finished resin tooth in the lower half of the inner cavity of the negative impression to the mandibular plaster model with wax, remove the negative impression, and complete the mandibular wax base molding;

[0026] (4) After the finished upper and lower jaw wax bases are made, the finished resin teeth are filled and polished in a conventional manner to complete the fabrication of the complete denture.

[0027] Furthermore, the teeth are cut from a wax disc.

[0028] Furthermore, the width of the jaw ridge is 18-20 mm, and the jaw ridge is cut from a wax disc;

[0029] Furthermore, the thickness of the maxillary palatal plate is 2-2.5 mm, the cavity is circular with a diameter of 1.5 cm and a depth of 1.5 mm.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. The existing technology requires patients to make multiple trips to the hospital for the procedure. By using the fabricated testing denture for testing and adjustment, the procedure can be shortened to three steps to obtain the digitally fabricated removable complete denture. This greatly shortens the production cycle, saves costs, reduces the burden on patients, and also reduces the difficulty of the operation for doctors.

[0032] 2. The plane formed by the midpoint of the maxillary wing notch and the incisor papillae on both sides of the maxilla hardly changes throughout a person's life, and it is parallel to the maxillary occlusal plane. The maxillary occlusal plane determined according to this theory is more accurate and more stable.

[0033] 3. The method of using silicone rubber to form a negative mold for arranging finished resin teeth and forming a wax base not only utilizes the convenience of digital design, but also avoids the registration certificate issues of existing 3D printed artificial teeth and base materials. It can also facilitate the installation of commonly used palatal adhesive base metal base mesh or the use of palatal metal plates instead of palatal resin plates for the arrangement and filling of removable complete dentures. In contrast, traditional digital removable complete dentures can only use resin bases for the palatal part, and this method cannot be implemented.

[0034] 4. In the testing type denture, the upper and lower jaw teeth are cut from wax discs, which are much harder than commonly used wax and are not easily deformed. Because they are made of wax, it is also convenient for doctors to adjust them according to the patient's lip-tooth aesthetic relationship and preferences. In addition, the teeth and jaw ridge are made of wax, which makes it easier to adjust for patients who need to reduce the vertical distance of the bite.

[0035] 5. Since the surface area of ​​the mandible is much smaller than that of the maxilla in patients with complete tooth loss, and the degree of bone resorption is also much more severe in the mandible, when arranging teeth in the fabrication of test-type dentures, the occlusal stability of the mandible should be taken into consideration first. The mandibular 4, 5, and 6 teeth should be arranged with the center of the mandibular ridge as the reference, and they should make contact with the plane of the ridge of the maxillary posterior teeth.

[0036] 6. The mandibular third and seventh teeth are not aligned in the test type denture, and the maxillary posterior teeth area is equipped with a ridge without tooth alignment. The width of the ridge is 2mm wider than the conventional ridge, which can eliminate occlusal interference when collecting the patient's occlusal relationship and make it easier for the patient to find a comfortable occlusal position.

[0037] 7. A circular cavity is set in the anterior part of the maxillary palatal plate of the test denture. When collecting the patient's occlusal data, the patient is instructed to place the back of the tongue against the cavity. This can encourage the patient to return to the mandibular position, making the collection of occlusal data smoother and more accurate.

[0038] 8. The fabrication of diagnostic dentures uses printed or cut resin bases, which have high precision and fit well with the mucosa. Therefore, the adhesion and stability are relatively high. The teeth and jaw rims use high-strength cut wax discs. Therefore, when collecting the occlusal relationship of patients with unstable occlusal relationships due to long-term tooth loss or unhealthy temporomandibular joints and muscles, the patients can wear diagnostic dentures for several hours or days before the occlusal relationship is collected, thus achieving the function of therapeutic dentures.

[0039] 9. If the accuracy or range of the patient's first impression is problematic, or if there are issues with the patient's oral mucosa, a second impression is required. Since the base of the testing denture is made of 3D printed resin, it meets the performance requirements for personalized trays. The jaw ridge and teeth are cut from wax discs, possessing a certain strength. Moreover, since the occlusal relationship has been determined through the above operations, a precise functional impression that cannot be obtained under the correct occlusal state can be obtained in the final step. Therefore, the testing denture can be used as a personalized tray for the second impression in the final step of this stage.

[0040] 10. If it is necessary to increase the vertical occlusal height of individual patients, patients wearing test dentures can be regarded as dentate patients. For such dentate patients, it is much easier to increase the vertical occlusal height or to collect occlusal relationships compared to edentulous patients. Attached Figure Description

[0041] Figure 1 This is a structural diagram of a test-type removable denture;

[0042] Figure 2 This is a diagram illustrating the wearing of a diagnostic removable denture in the oral cavity;

[0043] Figure 3 This is a schematic diagram of the assembly of the upper and lower jaw plaster models on the jawbone frame.

[0044] Figure 4 Anatomical landmarks of the maxillary edentulous jaw;

[0045] Figure 5 Anatomical landmarks of the edentulous mandible;

[0046] In the diagram: 1. Maxillary base, 2. Jawline, 3. Teeth, 4. Mandibular base, 5. Maxillary palatal plate, 6. Cavity, 7. Upper alveolar crest, 8. Maxillary plaster model, 9. Mandibular plaster model, 10. Occlusal articulator, 11. Midpoint of palatine fossa, 12. Incisive papilla, 13. Upper lip frenulum, 14. Pterygomatic maxillary notch, 15. Mandibular molar pad, 16. Lingual frenulum. Detailed Implementation

[0047] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0048] like Figure 1-4 As shown, the method for fabricating a digital removable complete denture in this embodiment is as follows:

[0049] 1. Take an impression based on the patient's oral cavity data and pour out a plaster model;

[0050] II. Scan the plaster model from step one to fabricate a diagnostic removable denture. The fabrication process is as follows:

[0051] (1) Based on the data after scanning the plaster model, the maxillary base 1 and mandibular base 4 were prepared using 3D printing resin material designed by digital software;

[0052] (2) The midline of the maxillary base 1 is determined by the anatomical landmarks of the two palatal fossae 11, the palatal suture, the longitudinal midpoint of the incisor papilla 12 and the upper lip frenulum 13 in the scanned plaster model data. The labial and lingual inclination of the upper anterior teeth in the maxillary base 1 is determined by judging the patient's Class 1, 2 and 3 occlusion. Based on the above data, the labial and lingual position of the teeth 3 to 3 in the anterior tooth region of the maxillary base 1 is determined. The remaining teeth of the maxillary base 1 are centered on the alveolar crest 7 and a flat ridge 2 is set. A cavity 6 that does not penetrate the maxillary palatal plate 5 is opened in the mid-palatal region of the maxillary palatal plate 5 of the maxillary base 1.

[0053] (3) The height of the occlusal plane of the posterior teeth of the maxillary base 1 is set at a position 6.5-8.5 mm away from the pterygomaxillary notch 14, and the height of the occlusal plane of the central incisor is set at a position 10-12 mm away from the midpoint of the incisor papilla 12. The maxillary occlusal plane formed by the above height is adjusted so that the maxillary occlusal plane is parallel to the plane formed by the midpoint of the bilateral pterygomaxillary notches 14 and the incisor papilla 12. The arrangement of the 3rd to 3rd teeth in the anterior teeth of the maxillary base 1 is completed according to the height of the maxillary occlusal plane.

[0054] (4) The height of the occlusal plane of the bilateral posterior teeth of the mandibular base 4 is level with the 1 / 2 point of the bilateral mandibular molar pads 15 in the scanned plaster model data; the midline of the anterior teeth of the mandibular base 4 is determined by the position of the bilateral mandibular molar pads 15 at 1 / 2 point in the scanned data, the position of the mandibular anterior lingual frenulum 16, and the already determined maxillary midline; the vertical height of the occlusal plane of the anterior teeth of the mandibular base 4 is determined by the vertical height of the already formed upper and lower mandibular bases and its relationship with the anterior teeth of the maxillary base 1.

[0055] (5) Based on the parameters of the above steps, and according to the patient's Class 1, 2, and 3 occlusal forms, as well as the labial and lingual inclination of the upper anterior teeth in the maxillary base 1, determine the labial and lingual inclination of the anterior teeth in the mandibular base 4. Arrange the mandibular base 4 anterior teeth positions 2 to 2, bilateral positions 4, 5, and 6, and leave bilateral positions 3 and 7 empty.

[0056] 3. After the testing-type removable denture is completed, it is delivered to the clinician and worn in the patient's mouth for testing and adjustment to obtain the various manufacturing indicators required for the next step of making digital removable complete dentures. When collecting the patient's occlusal relationship data, the patient is instructed to place the back of the tongue against the cavity 6, which can help the patient return to the mandibular position and make the collection of occlusal relationship data smoother and more accurate.

[0057] IV. Fabrication of digitally movable complete dentures, the process is as follows:

[0058] (1) Input the various manufacturing indicators of the test-type removable denture into the software, complete the arrangement of artificial teeth and the design of the base through the software, and manufacture the resin base and artificial tooth row by printing with a 3D printer or cutting with a precision machine tool;

[0059] (2) The prepared resin base, artificial dentition, and the patient's maxillary plaster model 8 and mandibular plaster model 9 are assembled on the occlusal frame 10. After the occlusal frame 10 is closed, the mandibular artificial dentition is removed. A silicone rubber impression of the maxillary artificial dentition is taken from the mandibular base artificial dentition part. The same model of finished resin tooth is placed in the impression determined by digital software. The maxillary base and maxillary artificial dentition are removed. The occlusal relationship is determined on the occlusal frame 10 by the impression with the finished resin tooth installed, the mandibular base, and the mandibular plaster model 9. The finished resin tooth in the impression is then fixed to the maxillary plaster model 8 with wax. The impression is removed to complete the molding of the maxillary wax base.

[0060] (3) Reinstall the mandibular artificial dentition that was removed in the above steps, close the occlusal frame 10, and close the maxillary plaster model 8 with the finished resin teeth and wax base with the mandibular artificial dentition, mandibular base and mandibular plaster model 9. Use silicone rubber to take a negative impression on the buccal and lingual sides of the finished resin teeth and mandibular artificial dentition. The upper half of the inner cavity of the negative impression is wrapped around the finished resin teeth of the maxilla so that the negative impression is fixed to the maxilla. Place the same type of finished resin teeth in the lower half of the inner cavity of the negative impression, remove the mandibular base and mandibular artificial dentition, and determine the occlusal relationship on the occlusal frame 10 by the negative impression with the finished resin model 8, the wax base and finished resin teeth installed, and the mandibular plaster model 9. Then fix the finished resin teeth in the lower half of the inner cavity of the negative impression to the mandibular plaster model 9 with wax, remove the negative impression, and complete the mandibular wax base molding.

[0061] (4) After the finished upper and lower jaw wax bases are made, the finished resin teeth are filled and polished in a conventional manner to complete the fabrication of the complete denture.

[0062] The aforementioned jaw brace 10 is prior art and is not within the scope of protection of this invention; therefore, its structure and usage will not be described in detail.

[0063] The removable denture for testing manufactured in this invention is a multi-functional testing device that integrates four functions: personalized impression tray, trial denture, therapeutic denture, and occlusal relationship assessment. It includes a maxillary base 1 made of 3D-printed resin material, a ridge 2 cut from a wax disc, teeth 3 cut from a wax disc, and a mandibular base 4 made of 3D-printed resin material. The maxillary base 1 has six teeth 3 located at positions 3 to 3 in the anterior region, and flat ridges 2 are provided at the remaining positions of the maxillary base 1. The width of the ridge 2 is 20mm; the middle part of the maxillary base 1 is the maxillary palatal plate 5, the thickness of the maxillary palatal plate 5 is 2.5mm, and a circular cavity 6 that does not penetrate the maxillary palatal plate 5 is opened in the central area of ​​the anterior palate of the maxillary palatal plate 5. The diameter of the cavity 6 is 1.5cm and the depth of the cavity 6 is 1.5mm; four teeth 3 are provided in the 2nd to 2nd position of the anterior teeth of the mandibular base 4, and teeth 3 are provided in the 4th, 5th and 6th position on both sides of the mandibular base 4. The 3rd and 7th position on both sides of the mandibular base 4 are empty. When worn in the patient's mouth, various indicators can be tested and adjusted, thus achieving the function of trial-fitting dentures. If the accuracy or range of the initial impression is problematic, or due to issues with the patient's oral mucosa, a second impression is typically required in previous procedures. The diagnostic denture of this invention can serve as a personalized tray for a second impression. When it is necessary to collect the occlusal relationship of patients with long-term tooth loss or unstable bite relationships due to temporomandibular joint and muscle problems, the patient can wear the diagnostic denture for several hours or days before collecting the occlusal relationship, thus achieving the function of a therapeutic denture. Through the fabricated diagnostic removable denture, patients only need to make three trips to the hospital to receive their digitally manufactured complete removable dentures, significantly shortening the production cycle, saving costs, and reducing the burden on patients.

Claims

1. A method for fabricating digitally movable complete dentures, characterized in that, The fabrication process of the complete denture is as follows:

1. Take an impression based on the patient's oral cavity data and pour out a plaster model; 2. Scan the plaster model from step one to fabricate a diagnostic removable denture; The removable denture for testing includes a maxillary base (1), a ridge (2), teeth (3), and a mandibular base (4). The maxillary base (1) has 6 teeth (3) in the anterior tooth position 3 to 3, and the remaining tooth positions of the maxillary base (1) have a flat ridge (2). The maxillary base (1) has a maxillary palatal plate (5) in the middle, and the anterior palatal region of the maxillary palatal plate (5) has a cavity (6) that does not penetrate the maxillary palatal plate (5). The mandibular base (4) has 4 teeth (3) in the anterior tooth position 2 to 2, and the mandibular base (4) has teeth (3) in the 4, 5, and 6 positions on both sides. The 3 and 7 positions on both sides of the mandibular base (4) are empty. Third, wear a testing denture to test and adjust various manufacturing indicators in order to determine the various manufacturing indicators required for the later production of digital removable complete dentures; Fourth, input the various manufacturing indicators obtained in step three into the software to complete the arrangement of artificial teeth and the design of the denture base. Use a 3D printer or cutting machine to manufacture the resin denture base and artificial dentition separately. Assemble the resin denture base, artificial dentition, and upper and lower jaw plaster models on the occlusal frame according to the determined occlusal relationship. Then, use silicone rubber to print the negative molds of the upper and lower jaw artificial dentition separately. Place the finished resin teeth in the negative molds, fix them, fill them with resin, and polish them to complete the preparation of the digital removable complete denture.

2. The method for fabricating a digitally removable complete denture as described in claim 1, characterized in that, The fabrication process of the aforementioned removable denture is as follows: (1) Based on the data after scanning the plaster model, the maxillary base (1) and mandibular base (4) were prepared using 3D printing resin material designed by digital software. (2) The midline of the maxillary base (1) is determined by the anatomical landmarks of the two palatal fossae (11), the palatal suture, the longitudinal midpoint of the incisor papilla (12) and the upper lip frenulum (13) in the scanned plaster model data. The labial and lingual inclination of the upper anterior teeth in the maxillary base (1) is determined by judging the patient's Class 1, 2 and 3 occlusion. Based on the above data, the labial and lingual position of the teeth (3) in the anterior tooth region of the maxillary base (1) is determined. The remaining teeth of the maxillary base (1) are centered on the alveolar crest (7) and a flat ridge (2) is set. A cavity (6) that does not penetrate the maxillary palatal plate (5) is opened in the mid-palatal region of the maxillary base (1). (3) The height of the occlusal plane of the posterior teeth of the maxillary base (1) is set at a position 6.5-8.5 mm away from the pterygomaxillary notch (14), and the height of the occlusal plane of the central incisor is set at a position 10-12 mm away from the midpoint of the incisor papilla (12). The maxillary occlusal plane formed by the above height is adjusted so that the maxillary occlusal plane is parallel to the plane formed by the midpoint of the bilateral pterygomaxillary notches (14) and the incisor papilla (12). The arrangement of the 3rd to 3rd teeth in the anterior teeth of the maxillary base (1) is completed according to the height of the maxillary occlusal plane. (4) The height of the occlusal plane of the bilateral posterior teeth of the mandibular base (4) is level with the 1 / 2 point of the bilateral mandibular molar pads (15) in the scanned plaster model data; the midline of the anterior teeth of the mandibular base (4) is determined by the position of the bilateral mandibular molar pads (15) in the scanned data, the position of the lingual frenulum (16) in the anterior part of the mandible, and the already determined midline of the maxilla; the vertical height of the occlusal plane of the anterior teeth of the mandibular base (4) is determined by the vertical height of the already formed posterior part of the maxillary and mandibular bases and its relationship with the anterior teeth of the maxillary base (1); (5) Based on the parameters in the above-mentioned detection type removable denture fabrication process, according to the patient's Class 1, 2, and 3 occlusal forms and the labial and lingual inclination of the upper anterior teeth in the maxillary denture base (1), determine the labial and lingual inclination of the anterior teeth in the mandibular denture base (4), arrange the mandibular denture base (4) anterior teeth positions 2 to 2, bilateral positions 4, 5, and 6, and leave bilateral positions 3 and 7 empty.

3. The method for fabricating a digitally removable complete denture as described in claim 1, characterized in that, The fabrication process of the digitally operated complete denture is as follows: (1) Input the various manufacturing indicators of the test-type removable denture into the software, complete the arrangement of artificial teeth and the design of the base through the software, and manufacture the resin base and artificial tooth row by printing with a 3D printer or cutting with a precision machine tool; (2) The prepared resin base, artificial dentition, and the patient's maxillary plaster model (8) and mandibular plaster model (9) are assembled on the occlusal frame (10). After the occlusal frame (10) is closed, the mandibular artificial dentition is removed. A silicone rubber impression of the maxillary artificial dentition is taken from the mandibular base artificial dentition part. The same model of finished resin tooth is placed in the impression determined by digital software. The maxillary base and maxillary artificial dentition are removed. The occlusal relationship is determined on the occlusal frame (10) by the impression with the finished resin tooth installed, the mandibular base, and the mandibular plaster model (9). The finished resin tooth in the impression is then fixed to the maxillary plaster model (8) with wax. The impression is removed to complete the molding of the maxillary wax base. (3) Reinstall the mandibular artificial dentition that was removed in the above steps, close the occlusal frame (10), close the maxillary plaster model (8) with the finished resin teeth and wax base with the mandibular artificial dentition, mandibular base and mandibular plaster model (9), use silicone rubber to take a negative impression on the buccal and lingual sides of the finished resin teeth of the maxillary artificial dentition and the mandibular artificial dentition, wrap the finished resin teeth of the maxillary artificial dentition in the upper half of the cavity of the negative impression so that the negative impression is fixed to the maxillary, put the same type of finished resin teeth in the lower half of the cavity of the negative impression, remove the mandibular base and the mandibular artificial dentition, determine the occlusal relationship on the occlusal frame (10) with the negative impression with the finished resin teeth installed on the maxillary plaster model (8), the wax base of the maxillary artificial dentition and the finished resin teeth installed on the maxillary plaster model (8), the mandibular plaster model (9) and the mandibular plaster model (9) installed on the occlusal frame (10), then fix the finished resin teeth in the lower half of the cavity of the negative impression to the mandibular plaster model (9) with wax, remove the negative impression, and complete the mandibular wax base molding; (4) After the finished upper and lower jaw wax bases are made, the finished resin teeth are filled and polished in a conventional manner to complete the fabrication of the complete denture.

4. The method for fabricating a digitally removable complete denture as described in claim 1, characterized in that, The teeth (3) are cut from a wax disc.

5. The method for fabricating a digitally removable complete denture as described in claim 1, characterized in that, The width of the jaw ridge (2) is 18-20 mm, and the jaw ridge (2) is cut from a wax disc.

6. The method for fabricating a digitally removable complete denture as described in claim 1, characterized in that, The thickness of the maxillary palatal plate (5) is 2-2.5 mm, the cavity (6) is circular, the diameter of the cavity (6) is 1.5 cm, and the depth of the cavity (6) is 1.5 mm.

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