阅读说明：本技术 一种具有共同就位道的义齿数字化制作方法及义齿结构 (Denture digital manufacturing method with common in-place path and denture structure ) 是由 于海石 许小伟 陈刚 高永波 石永吉 于 2021-10-27 设计创作，主要内容包括：本发明公开了一种具有共同就位道的义齿数字化制作方法及义齿结构,其中,义齿结构用于套设在间隔设置的第一基牙和第二基牙上,所述义齿结构包括：内冠体,所述内冠体套设在第一基牙上,所述内冠体与所述第二基牙具有共同就位道；连接桥体,所述连接桥体与所述内冠体可拆卸连接,并套设在所述第二基牙上；所述连接桥体填充所述第一基牙和所述第二基牙之间的缺失牙位置。解决现有技术中在两端基牙无共同就位道的情况下,采用一体式的冠桥体结构的义齿不仅制作工艺复杂,而且还不便于义齿戴入口腔的问题。(The invention discloses a denture digital manufacturing method with a common in-place channel and a denture structure, wherein the denture structure is used for being sleeved on a first abutment and a second abutment which are arranged at intervals, and comprises the following steps: the inner crown body is sleeved on the first abutment, and the inner crown body and the second abutment have a common in-place way; the connecting bridge body is detachably connected with the inner crown body and sleeved on the second abutment; the connecting bridge fills a missing tooth location between the first abutment and the second abutment. The problem of in prior art under the condition that the both ends abutment tooth does not have the way of taking one's place jointly, adopt the artificial tooth of integral type crown bridge body structure not only the manufacturing process is complicated, but also the artificial tooth of still not being convenient for wears into the oral cavity is solved.)

1. A denture construct having a common tunnel for fitting over first and second spaced abutments, said denture construct comprising:

the inner crown body is sleeved on the first abutment, and the inner crown body and the second abutment have a common in-place way;

the connecting bridge body is detachably connected with the inner crown body and sleeved on the second abutment;

the connecting bridge fills a missing tooth location between the first abutment and the second abutment.

2. The denture structure having a common tunnel according to claim 1, wherein said inner crown comprises: the first tooth body part is sleeved on the first abutment;

the connecting cantilever part is fixedly connected to the first tooth body part and used for being connected with the connecting bridge body, and the connecting cantilever part and the second abutment have a common in-place channel.

3. The denture structure with a common tunnel according to claim 2, wherein said connecting bridge comprises: one end of the missing tooth body part is connected with the inner crown body, and the other end of the missing tooth body part is sleeved on the second abutment; and

the clamping and embedding groove is formed in the bottom of one end, facing the inner crown body, of the missing tooth body part;

the connecting cantilever part is connected with the clamping groove in a clamping and embedding manner.

4. The denture structure with a common tunnel according to claim 3, wherein said connecting bridge further comprises: the second groove is formed in the bottom, away from one end of the inner crown body, of the missing tooth body, and the second abutment is clamped and embedded in the second groove.

5. The denture structure having a common tunnel according to claim 4, wherein said missing tooth portion comprises a plurality of missing teeth, the lower portions of said plurality of missing teeth being connected in series.

6. The denture form having a common tunnel according to claim 5, wherein a plurality of said missing teeth comprise: a second, third and fourth dental body portion;

the embedded groove is formed in the bottom of the second tooth body portion, and the second groove is formed in the fourth tooth body portion.

7. The denture structure with a common tunnel according to claim 2, wherein the first abutment is provided with a first groove at the bottom thereof, and the first abutment is engaged in the first groove.

8. The denture construct with a common tunnel according to claim 2, wherein said inner crown is disposed adjacent the posterior teeth and said connecting bridge is disposed adjacent the anterior teeth at an end facing away from said inner crown.

9. A method of digitally creating a denture having a common tunnel, for use with the denture construction of any one of claims 1-8, comprising the steps of:

the denture design is carried out in digital software by acquiring information data in the mouth of a patient;

splitting the denture structure into a detachably connected inner crown digital model and a connected bridge digital model in digital software, wherein the inner crown digital model is used for being matched with a first abutment appearance structure, the connected bridge digital model is used for being matched with a second abutment appearance structure, and the inner crown digital model and the second abutment have a common in-situ channel;

and respectively leading the inner crown body digital model and the connecting bridge body digital model into manufacturing equipment, and manufacturing the inner crown body and the connecting bridge body.

10. The method of claim 9, wherein the step of splitting the denture structure into a detachably connected inner crown digital model and connecting the bridge digital model in a digital software comprises:

the coping digital model comprises: the digital model of the connecting cantilever part is fixedly connected to the digital model of the first tooth body part;

the connecting bridge digital model comprises: a missing tooth digital model having one end connected to the coping digital model, an

The clamping groove digital model is arranged at the bottom of one end, facing the inner crown body digital model, of the missing tooth body digital model;

the connecting cantilever part digital model is used for being connected with the clamping groove digital model in a clamping and embedding manner.

Technical Field

The invention relates to the field of tooth restoration, in particular to a denture digital manufacturing method and a denture structure with a common in-place channel.

Background

The common approach is the common direction and angle of the removable partial denture components when worn in the mouth. Since partial dentures generally have more than 2 abutments, the retainers on the dentures must be worn in the same direction before the dentures can be placed. Since the positions, forms, inclinations, undercut, periodontal health conditions, and the like of the respective abutments are different and the number and parts of missing teeth are different, the approach of the denture needs to be determined by averaging undercut and adjusting undercut according to a certain principle by means of an observer.

In the prior art, the conventional technology is adopted, and in the abutment body of the fixed denture, the seating paths of each abutment are required to be parallel to each other, but in some cases of installing the denture, the complete qualification of the seating paths of the prepared abutments in each oral cavity cannot be guaranteed. For example, the number of missing teeth is large, and the abutment teeth at the two ends are not neat, so that a common seating path is not formed. Under the condition that the abutment teeth at the two ends are not in place together, the false tooth adopting the integrated crown-bridge body structure is not only complex in manufacturing process, but also inconvenient to wear in the oral cavity.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a digital manufacturing method of a denture having a common seating path and a denture structure, which solve the problems of the prior art that the denture having an integrated crown-bridge structure is not only complicated in manufacturing process but also inconvenient to wear in the oral cavity when abutments at both ends are not in the common seating path.

The technical scheme of the invention is as follows:

a denture construct having a common tunnel for fitting over first and second spaced apart abutments, wherein said denture construct comprises:

the inner crown body is sleeved on the first abutment, and the inner crown body and the second abutment have a common in-place way;

the connecting bridge body is detachably connected with the inner crown body and sleeved on the second abutment;

the connecting bridge fills a missing tooth location between the first abutment and the second abutment.

Further, the coping body includes: the first tooth body part is sleeved on the first abutment;

the connecting cantilever part is fixedly connected to the first tooth body part and used for being connected with the connecting bridge body, and the connecting cantilever part and the second abutment have a common in-place channel.

Further, the connecting bridge comprises: one end of the missing tooth body part is connected with the inner crown body, and the other end of the missing tooth body part is sleeved on the second abutment; and

the clamping and embedding groove is formed in the bottom of one end, facing the inner crown body, of the missing tooth body part;

the connecting cantilever part is connected with the clamping groove in a clamping and embedding manner.

Further, the connecting bridge body further comprises: the second groove is formed in the bottom, away from one end of the inner crown body, of the missing tooth body, and the second abutment is clamped and embedded in the second groove.

Further, the missing tooth body part comprises a plurality of missing tooth bodies, and the lower parts of the plurality of missing tooth bodies are connected in sequence.

Further, a plurality of the missing teeth includes: a second, third and fourth dental body portion;

the embedded groove is formed in the bottom of the second tooth body portion, and the second groove is formed in the fourth tooth body portion.

Further, a first groove is formed in the bottom of the first tooth body portion, and the first abutment is clamped and embedded in the first groove.

Furthermore, the inner crown body is arranged adjacent to the rear teeth, and one end of the connecting bridge body, which is far away from the inner crown body, is arranged adjacent to the front teeth.

Based on the same inventive concept, the present invention further provides a digital manufacturing method of a denture with a common positioning channel, which is used for the denture structure, and comprises the following steps:

the denture design is carried out in digital software by acquiring information data in the mouth of a patient;

splitting the denture structure into a detachably connected inner crown digital model and a connected bridge digital model in digital software, wherein the inner crown digital model is used for being matched with a first abutment appearance structure, the connected bridge digital model is used for being matched with a second abutment appearance structure, and the inner crown digital model and the second abutment have a common in-situ channel;

and respectively leading the inner crown body digital model and the connecting bridge body digital model into manufacturing equipment, and manufacturing the inner crown body and the connecting bridge body.

Further, the step of splitting the denture structure into a detachable connected inner crown digital model and connecting the bridge digital model in the digital software comprises:

the coping digital model comprises: the digital model of the connecting cantilever part is fixedly connected to the digital model of the first tooth body part;

the connecting bridge digital model comprises: a missing tooth digital model having one end connected to the coping digital model, an

The clamping groove digital model is arranged at the bottom of one end, facing the inner crown body digital model, of the missing tooth body digital model;

the connecting cantilever part digital model is used for being connected with the clamping groove digital model in a clamping and embedding manner.

Has the advantages that: compared with the prior art, the denture digital manufacturing method and the denture structure with the common in-situ channel are provided by the invention, wherein the denture structure is sleeved on the first abutment and the second abutment which are arranged at intervals, even if the first abutment and the second abutment have different in-situ channels, the inner crown body in the denture structure is sleeved on the first abutment, the inner crown body and the second abutment have the common in-situ channel, so that the inner crown body is used as one abutment, the inner crown body and the second abutment form the in-situ abutment for fixing the denture and have the same in-situ channel, the connecting bridge body is detachably connected with the inner crown body and sleeved on the second abutment, and the connecting bridge body fills the position of the missing tooth between the first abutment and the second abutment. Therefore, the connecting bridge body is simply connected, the effect of a precise attachment piece is realized, the connecting mode is flexible, the manufacturing is convenient, and the oral cavity requirement of a patient can be met. The artificial tooth bridge has excellent retention and perfect aesthetic natural appearance, and finally, the problem of difficult positioning caused by the lack of positioning channels and different positioning channels of two abutments during the manufacture of the artificial tooth bridge is perfectly solved.

Drawings

FIG. 1 is a schematic view of a missing tooth location of a tooth in need of repair;

FIG. 2 is a disassembled schematic view of an embodiment of a denture form having a common tunnel according to the present invention;

fig. 3 is a schematic view of a joined-together bottom construction of an embodiment of a denture construction having a common tunnel according to the present invention;

fig. 4 is a schematic view of the connection of a coping to a missing tooth position according to an embodiment of the present invention having a denture structure with a common tunnel.

The reference numbers in the figures: 100. a first abutment; 110. a second abutment; 120. rear teeth; 130. front teeth; 200. an inner crown body; 210. a first dental part; 211. a first groove; 220. a connecting cantilever part; 300. connecting a bridge body; 310. a missing tooth body portion; 320. a clamping groove; 330. a second groove; 341. a second dental part; 342. a third dental unit; 343. a fourth dental body portion.

Detailed Description

The invention provides a denture digital manufacturing method and a denture structure with a common positioning channel, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and taking examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Conventionally, the denture approach is determined by averaging and adjusting the undercut according to certain principles, such as: 1. average inverted concavity method (equi-concavity, vertical stab): the model direction is adjusted at the position where the mesial-distal direction and the bucco-lingual direction of each abutment are relatively even, then a guide line of the abutment is drawn, and the common in-place direction of the false teeth designed and manufactured according to the guide line is the bisector direction of the intersection angle of the long axes of the abutments at the two ends. 2. Adjustment of the undercut method (undercut, rotation and oblique insertion): the re-entrant is to properly focus the undercut on certain abutments or on certain side surfaces of the abutments. The false tooth adopts oblique positioning, can utilize locking action to enhance the retention of the false tooth, and can reduce the gap between the edentulous area of the anterior tooth and the adjacent tooth and beautify the appearance.

In the conventional method, by making a temporary crown, diagnostic information is provided: after the removal of the axial plane undercut and the preparation of the maxillofacial surface are finished, a temporary crown-bridge body is manufactured, white self-hardening plastics (a tooth piece is used for the anterior teeth) can be used for adjusting to the later stage of wire drawing without touching hands, pinching into strips with the same length as the bridge body, pressing on each surface of each abutment and adjacent gap between the abutment and the temporary tooth, requiring tight fitting, allowing the adjacent gap to fully enter, correcting shape with a graver, allowing patient to sit at the center, reach forward and engage laterally, feeling with fingers that the self-setting resin has started to heat, and when the self-setting resin has started to solidify but has not completely solidified, immediately taking out the fish to soak in water at 60-80 ℃, then immediately putting the fish into the mouth for restoration, then taking out the implant to be soaked in hot water, grinding off the plastic between the abutment teeth at two ends and the adjacent teeth after solidification, then placing the implant in the mouth for positioning, and if the implant can be smoothly worn in the mouth, indicating each axial surface of the denture and obtaining a common positioning path.

In the operation process, under the condition of no common positioning way, the manufacturing process is complex, and false teeth are not convenient to wear in the oral cavity. And the requirements on manual work and experience are high in the operation process, and flexible modification cannot be realized. And the effect can not be previewed in the manufacturing process, and the traditional process is time-consuming and labor-consuming, has complex procedures, depends on manpower, has higher production cost and low production efficiency, and can not meet all conditions.

As shown in fig. 1, 2 and 4, the present embodiment proposes a denture structure having a common seating path for fitting over first and second abutments 100 and 110 spaced apart from each other, and is particularly applicable to a plurality of missing tooth positions spaced apart from each other between the first and second abutments 100 and 110, and the first and second abutments 100 and 110 do not have a common seating path, as shown in fig. 1 and 4. The first abutment 100 is disposed adjacent to the rear tooth 120, and the second abutment 110 is disposed adjacent to the front tooth 130. As shown in fig. 2, the denture structure in this embodiment includes: an inner crown body 200, and a connecting bridge body 300. The inner crown body 200 is sleeved on the first abutment 100, the inner crown body 200 and the second abutment 110 have a common seating path, that is, the bottom of the inner crown body 200 matches the contour of the first abutment 100, and the inner crown body 200 has a part of a contour matching the contour of the second abutment 110, for example, having the same shape, inclination, undercut, etc., so that the part of the inner crown body 200 and the second abutment 110 have a common seating path. The connecting bridge 300 is detachably connected to the inner crown body 200 and sleeved on the second abutment 110, and the connecting bridge 300 fills the missing tooth position between the first abutment 100 and the second abutment 110. Since there is a common seating path by providing inner crown 200, the disassembly and attachment of connecting bridge 300 is facilitated.

As shown in fig. 2, with the above-described structure, by fitting the denture structure over the first abutment 100 and the second abutment 110 which are spaced apart from each other, even if the first abutment 100 and the second abutment 110 have different positioning paths, the inner crown 200 and the second abutment 110 have a common positioning path by fitting the inner crown 200 of the natural tooth structure over the first abutment 100, so that the inner crown 200 serves as one abutment, the inner crown 200 and the second abutment 110 form a fixed denture positioning abutment having the same positioning path, and the connecting bridge 300 fills the missing tooth position between the first abutment 100 and the second abutment 110 by detachably connecting to the inner crown 200 and fitting over the second abutment 110 via the connecting bridge 300. Therefore, the connecting bridge body 300 is simply connected, the effect of a precise attachment is realized, the connecting mode is flexible, the manufacturing is convenient, and the oral cavity requirement of a patient can be met. The artificial tooth bridge has excellent retention and perfect aesthetic natural appearance, and finally, the problem of difficult positioning caused by the lack of positioning channels and different positioning channels of two abutments during the manufacture of the artificial tooth bridge is perfectly solved.

As shown in fig. 2 and 3, in the specific structure of the present embodiment, the inner crown body 200 includes: a first tooth body part 210, and a connecting cantilever part 220. As shown in fig. 1 and 4, the first tooth body portion 210 is sleeved on the first abutment 100, and in a specific structure, a first groove 211 is formed at the bottom of the first tooth body portion 210, and the first abutment 100 is embedded in the first groove 211; the inner wall of the first recess 211 is contoured to match the outer wall of the first abutment 100 such that the first body portion 210 is directly fixed to the first abutment 100 by the first recess 211. The connecting cantilever part 220 is fixedly connected to the first tooth body part 210, and the connecting cantilever part 220 is used for connecting the connecting bridge body 300; specifically, the cantilever connecting portion 220 is integrally formed with the first tooth body portion 210 and is located on a side of the first tooth body portion 210 facing the second abutment 110. The cantilever connecting portion 220 and the second abutment 110 have a common seating path, that is, the cantilever connecting portion 220 is a portion of the seating path of the inner crown body 200, so that the cantilever connecting portion 220 is connected to the first abutment 100 through the inner crown body 200, and thus the cantilever connecting portion 220 serves as a seating abutment of the prosthetic appliance instead of the first abutment 100, thereby facilitating the seating connection of the connecting bridge 300.

As shown in fig. 2 and 3, the connecting bridge 300 includes: a missing tooth part 310, a snap groove 320 and a second groove 330. One end of the missing tooth body part 310 is connected to the inner crown body 200, and the other end is sleeved on the second abutment 110. The engaging groove 320 is formed at the bottom of the missing tooth body portion 310 facing to one end of the inner crown body 200, and the connecting cantilever portion 220 is engaged with the engaging groove 320. The second groove 330 is opened at the bottom of the missing tooth body portion 310 at the end facing away from the inner crown body 200, and the second abutment 110 is engaged in the second groove 330. The inner wall of the second groove 330 matches the outer wall profile of the second abutment 110. Thereby facilitating the connection of the connecting bridge 300 with the second abutment 110. Two ends of the missing tooth body part 310 are used as connecting parts to be respectively connected with the connecting cantilever part 220 and the second abutment 110, the connecting cantilever part 220 and the second abutment 110 are jointly fixed at two ends of a missing area needing to be repaired, the missing tooth body part 310 is limited and fixed, in this way, the connection of the connecting bridge body 300 in place is facilitated, the missing position of the tooth is filled through the missing tooth body part 310 of the connecting bridge body 300, and therefore the primary installation of the denture in the oral cavity is achieved.

As shown in fig. 2 and 3, the missing tooth part 310 includes a plurality of missing tooth parts, and the lower parts of the plurality of missing tooth parts are connected in sequence. The upper parts of the plurality of missing tooth bodies are convexly arranged to form a false tooth structure, and the plurality of missing tooth bodies are filled in the position of the missing tooth in the oral cavity, so that the teeth are repaired. The lower portions of a plurality of the missing teeth are integrally formed, so that the structural strength of the entire connecting bridge 300 is high. The connecting bridge 300 is structurally more stable.

In this embodiment, taking the example of repairing four adjacent teeth, the plurality of missing tooth bodies includes: a second dental part 341, a third dental part 342 and a fourth dental part 343, the second dental part 341 being disposed adjacent to the inner crown 200, the caulking groove 320 being formed at the bottom of the second dental part 341, and the second groove 330 being formed at the fourth dental part 343; the fourth tooth body 343 is coupled to the second abutment 110 through the second groove 330. Thus, the inner crown body 200 is connected to the first abutment 100, the inner crown body 200 forms a first tooth body, the first abutment 100 is repaired, both ends of the connecting bridge 300 are fixed by the connecting cantilever portion 220 and the second abutment 110, and the fourth tooth body portion 343 is fitted over the second abutment 110 to repair the second abutment 110. The second and third tooth parts 341 and 342 of the connecting bridge 300 are positioned at the positions of the missing teeth, and the two missing teeth are repaired.

In this embodiment, the inner crown body 200 is disposed adjacent to the posterior teeth, and the connecting bridge body 300 is disposed adjacent to the anterior teeth at the end away from the inner crown body 200. Specifically, the inner crown body 200 is disposed near the posterior tooth, which is larger, and the connection region between the processed first abutment 100 and the inner crown body 200 is larger, so that the inner crown body 200 can be stably fixed.

Based on the same inventive concept, the present invention further provides a digital manufacturing method of a denture with a common positioning channel, which is used for the denture structure, and comprises the following steps:

and step S100, false tooth design is carried out in digital software by acquiring information data in the mouth of a patient.

In the specific process, the denture design is carried out by acquiring information data in the mouth of a patient, the digitalized software is combined with the working model design, the bridge body of the denture is designed, the in-place direction is consistent with the in-place direction of the abutment on the other side, and the denture can be ensured to reach the ideal fit repairing position on the abutment.

Step S200, the denture structure is divided into a detachable connected inner crown digital model and a connected bridge digital model in the digital software, wherein the inner crown digital model is used for being matched with a first abutment appearance structure, the connected bridge digital model is used for being matched with a second abutment appearance structure, and the inner crown digital model and the second abutment have a common in-place channel.

In the specific process, the denture structure is divided into the detachable and connected inner crown body digital model and the connected bridge body digital model in the digital software, the structure is conveniently modified through the digital model, the structure design and optimization are carried out, and the operation is flexible.

In the step S200:

the coping digital model comprises: the digital model of the connecting cantilever part is fixedly connected to the digital model of the first tooth body part;

the connecting bridge digital model comprises: a missing tooth digital model having one end connected to the coping digital model, an

The clamping groove digital model is arranged at the bottom of one end, facing the inner crown body digital model, of the missing tooth body digital model; the connecting cantilever part digital model is used for being connected with the clamping groove digital model in a clamping and embedding manner.

By software design, the morphology of the first abutment and the second abutment in the exit chamber can be simulated. The digital model of the connecting cantilever part can be flexibly designed in software, so that the outer part of the digital model of the connecting cantilever part and the second abutment have the same in-place channel, and the digital model of the connecting bridge body is matched with the digital model of the connecting cantilever part and the second abutment in the software simulation process. The improper place is modified until the precise fit is achieved, so that the work difficulty of manual direct forming is reduced.

And step S300, respectively importing the inner crown body digital model and the connecting bridge body digital model into manufacturing equipment, and manufacturing the inner crown body and the connecting bridge body.

In a specific process, the simulated model can be directly manufactured through manufacturing equipment, such as 3D printing, CNC machining and the like. In the scheme, the false tooth is firstly split, and after the inner crown body is worn, the suspension connecting cantilever part on the inner crown body positioned on the rear tooth side solves the retention problem of the second tooth body part, the third tooth body part and the fourth tooth body part and also ensures that a common way of taking one's place is provided.

In the process, the original manual denture operation process is converted and applied to digitization, and the problem of positioning is solved by software, so that time and cost are saved in the manufacturing process, and the manufacturing effect can be more visually seen.

In summary, the present invention provides a digital denture fabrication method and a denture structure with a common approach, in which an inner crown body with a connecting cantilever is fabricated at a medial position near a posterior tooth (a first abutment), the connecting cantilever and an anterior tooth (a second abutment) form a common approach, and a detachable bridge is formed with the connecting cantilever according to the shape and angle of the connecting bridge. Thus ensuring the stability of the bridge body and obtaining the common in-place way of the abutment teeth at the two ends of the crown bridge. The dentition loss is more, the abutment tooth condition of a patient is poorer, a common in-place way is not provided, and the condition of directly making a bridge is not provided. The connecting bridge can be disassembled to achieve the effect of making a precise attachment, so that the device is flexible, convenient to manufacture and capable of meeting the oral cavity requirements of patients. And has excellent retention and perfect aesthetic natural appearance, and finally perfectly solves the problems that the bridge is lack of a positioning way and is difficult to position. The problems can be converted from the traditional method to the digital method, and the problems that the abutment has no positioning way and cannot be positioned together can be well solved through the design.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.