Combined 3D printing false tooth

Abstract

The utility model provides a combined 3D printing false tooth, which belongs to the false tooth field, and comprises an upper tooth body and a lower tooth body, the top of the lower tooth body is provided with a boss, the bottom of the upper tooth body is provided with a groove for the boss to insert, the outer side surface of the boss is circumferentially distributed with a plurality of groups of positioning members, and the inner wall of the groove is provided with positioning grooves for the positioning members to insert; the positioning piece comprises a positioning block and an elastic abutting piece, a mounting groove is formed in the boss, the positioning block and the elastic abutting piece are both arranged in the mounting groove, and the elastic abutting piece can drive the positioning block to move out of the mounting groove; connecting pieces are arranged between the positioning blocks of the multiple sets of positioning pieces, and a containing groove used for containing the connecting pieces is formed in the middle of the boss. According to the utility model, the upper tooth body and the lower tooth body which are separately printed can be detachably connected, so that the easily-worn upper tooth body of the false tooth can be independently replaced, and the service life of the lower tooth body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial teeth, and in particular to a combined 3D printed artificial tooth. Background Art

[0002] 3D printed dentures have higher precision and adaptability, short production cycle and can be automated, so they are gradually becoming the mainstream of the denture market. Dentures will wear out after long-term use. Severe wear usually occurs at the top of the denture, while other parts are only slightly worn. However, since current dentures are usually printed in one piece, the entire denture needs to be replaced. The price of 3D printed dentures is relatively expensive. Reprinting the entire denture not only increases the financial burden on patients, but also causes a certain degree of waste. Utility Model Content

[0003] The purpose of the utility model is to provide a combined 3D printed denture, which can connect the separately printed upper tooth body and lower tooth body in a detachable manner, so as to facilitate the replacement of the easily worn upper tooth body of the denture separately and increase the service life of the lower tooth body.

[0004] The embodiment of the utility model is realized by the following technical scheme: a combined 3D printed denture, comprising an upper tooth body and a lower tooth body, the top of the lower tooth body is provided with a boss, the bottom of the upper tooth body is provided with a groove for inserting the boss, the outer side surface of the boss is circumferentially distributed with multiple groups of positioning members, the inner wall of the groove is provided with a positioning groove for inserting the positioning member; the positioning member comprises a positioning block and an elastic pressure sheet, the boss is provided with an installation groove, the positioning block and the elastic pressure sheet are both arranged in the installation groove, and the elastic pressure sheet can drive the positioning block to move out of the installation groove; connecting members are provided between the positioning blocks of the multiple groups of the positioning members, and the middle part of the boss is provided with a receiving groove for accommodating the connecting member.

[0005] Furthermore, the connecting member includes a connecting plate and a plurality of connecting belts circumferentially distributed on the connecting plate, the plurality of connecting belts are connected one by one to one ends of a plurality of positioning blocks located in the mounting grooves, and the elastic pressure plate is provided with a through hole for the connecting belt to pass through.

[0006] Furthermore, there is a distance between the connecting plate and the bottom wall of the receiving groove, and when the connecting plate moves to abut against the bottom wall of the receiving groove, the plurality of positioning blocks are driven to move into the installation groove.

[0007] Furthermore, a plug-in strip is arranged at one end of the connection belt away from the connection plate, and a plug-in groove for inserting the plug-in strip is formed through the positioning block.

[0008] Furthermore, the cross-sectional shapes of the plug-in strip and the plug-in slot are both dovetail-shaped.

[0009] Furthermore, the elastic pressing piece includes a bending piece and inclined pieces arranged at both ends of the bending piece, and when the positioning block is located in the mounting groove, the inclined pieces tend to be in a vertical state and store energy.

[0010] Furthermore, a recessed portion is provided at the center of the bending piece.

[0011] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0012] 1. The utility model connects the upper tooth body and the lower tooth body which are printed separately in a detachable manner by arranging a positioning member and a connecting member between the upper tooth body and the lower tooth body, so as to facilitate the replacement of the upper tooth body which is easy to wear of the denture separately and improve the service life of the lower tooth body.

[0013] 2. The utility model installs the positioning parts and connecting parts that need to be reused on the boss of the lower tooth body, and the upper tooth body only needs to be grooved accordingly. When the upper tooth body is worn and needs to be replaced, only the upper tooth body needs to be destroyed without causing damage to the lower tooth body. After replacing the new upper tooth body, the lower tooth body, positioning parts and connecting parts can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the overall structure of the combined 3D printed denture provided by the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the positioning member and the connecting member in the boss of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the positioning member and the connecting member of the utility model;

[0018] Figure 4 for Figure 3 A magnified view of part A;

[0019] Icon: 1-upper tooth body, 11-groove, 12-positioning groove, 2-lower tooth body, 21-boss, 211-installing groove, 212-accommodating groove, 3-positioning piece, 31-positioning block, 311-plug-in groove, 32-elastic pressure piece, 321-bending piece, 3211-recessed part, 322-inclined piece, 4-connecting piece, 41-connecting plate, 42-connecting belt, 43-plug-in strip. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] The following is further described in conjunction with specific embodiments. Figure 1-Figure 4 As shown, the utility model is a combined 3D printed denture, including an upper tooth body 1 and a lower tooth body 2, a boss 21 is provided on the top of the lower tooth body 2, a groove 11 for inserting the boss 21 is provided at the bottom of the upper tooth body 1, and a plurality of mounting grooves 211 are circumferentially distributed on the outer side surface of the boss 21, and a positioning member 3 is arranged in each mounting groove 211, and a positioning groove 12 for inserting the positioning member 3 is provided on the inner wall of the groove 11. The upper tooth body 1 and the lower tooth body 2 are 3D printed separately, and the upper tooth body 1 after printing has a groove 11 and a positioning groove 12, and the lower tooth body 2 has a boss 21 and a mounting groove 211 on the boss 21. The positioning member 3 is assembled into the boss 21 when the upper tooth body 1 and the lower tooth body 2 are assembled later, and the assembly process of the upper tooth body 1 and the lower tooth body 2 is realized by the positioning member 3 after the assembly is completed.

[0024] Reference Figure 2 , Figure 3As shown, the positioning member 3 includes a positioning block 31 and an elastic pressing piece 32, both of which are installed in the installation groove 211, and the elastic pressing piece 32 has a tendency to drive the positioning block 31 to move out of the installation groove 211. In order to facilitate the insertion of the positioning block 31 into the positioning groove 12, a chamfer is also provided on the positioning block 31. Connecting members 4 are arranged between the positioning blocks 31 of the plurality of positioning members 3, and a receiving groove 212 for accommodating the connecting member 4 is provided in the middle of the boss 21. After the positioning member 3 and the connecting member 4 are installed in the boss 21, the connecting member 4 can keep the positioning block 31 partially located in the installation groove 211. When the upper tooth body 1 and the lower tooth body 2 are combined, the positioning block 31 is pressed into the installation groove 211, and the boss 21 of the lower tooth body 2 is pushed into the groove 11 of the upper tooth body 1. When the positioning block 31 and the positioning groove 12 are in an aligned state, the positioning block 31 is inserted into the positioning groove 12 under the elastic force of the elastic pressure sheet 32 ​​to fix the position between the upper tooth body 1 and the lower tooth body 2.

[0025] Reference Figure 3 As shown, the connecting member 4 includes a connecting plate 41 and a plurality of connecting belts 42 circumferentially distributed on the connecting plate. The plurality of connecting belts 42 are connected to one end of the plurality of positioning blocks 31 located in the installation groove 211 in a one-to-one correspondence. A through hole for the connecting belt 42 to pass through is provided on the elastic pressing plate 32. There is a gap between the connecting plate 41 and the bottom wall of the receiving groove 212. When the connecting plate 41 moves to abut against the bottom wall of the receiving groove 212, the plurality of positioning blocks 31 are driven to move into the installation groove 211. When the upper tooth body 1 is worn and needs to be replaced, a hole is drilled at the top of the upper tooth body 1 using an external drilling tool, and then the connecting plate 41 is pressed downward using an external rod-shaped tool, so that the connecting plate 41 drives the connecting belt 42 to move downward at the same time. During the downward movement of the connecting belt 42, a pulling force can be applied to the positioning block 31 to move the positioning block 31 out of the positioning groove 12, thereby releasing the positioning effect between the upper tooth body 1 and the lower tooth body 2, so that the worn upper tooth body 1 can be removed and a new upper tooth body 1 can be installed on the lower tooth body 2.

[0026] Reference Figure 3 , Figure 4As shown, the end of the connecting belt 42 away from the connecting plate 41 has a plug strip 43, and the positioning block 31 is provided with a plug slot 311 for the plug strip 43 to be inserted. In this embodiment, the cross-sectional shapes of the plug strip 43 and the plug slot 311 are both dovetail-shaped, so that after the plug strip 43 is inserted into the plug slot 311, it will not move out of the plug slot 311 when it is subjected to the pulling force of the connecting belt 42. In other embodiments, the cross-sectional shapes of the plug strip 43 and the plug slot 311 can also be set to T-shaped, which can ensure that the plug strip 43 will not move out of the plug slot 311 in the depth direction of the plug slot 311. Place the connecting plate 41 in the receiving groove 212, align the multiple connecting belts 42 on the connecting plate 41 with the multiple installation grooves 211 and insert them, align the through hole on the elastic pressing sheet 32 ​​with the plug-in strip 43 and insert the connecting belt 42, and then insert the plug-in strip 43 into the plug-in groove 311 on the positioning block 31, and the assembly process of the connecting member 4 and the positioning member 3 is completed. It should be noted that the connecting belt 42 has a certain elasticity and can be extended out of the installation groove 211 under the action of tension to facilitate the installation process of the positioning block 31.

[0027] Reference Figure 4 As shown, the elastic pressing piece 32 includes a bending piece 321 and inclined pieces 322 arranged at both ends of the bending piece 321. The bending piece 321 and the two inclined pieces 322 are formed by bending a sheet of elastic steel plate. When the positioning block 31 moves into the mounting groove 211, the positioning block 31 presses the inclined piece 322 to a vertical state. At this time, the elastic pressing piece 32 can store energy. When not subject to external forces, the elastic pressing piece 32 can apply thrust to the positioning block 31 and push the positioning block 31 into the positioning groove 12 during the process of restoring the initial state. A recessed portion 3211 is also provided at the center of the bending piece 321. When subjected to external thrust, the recessed portion 3211 can cause the bending piece 321 to undergo greater deformation, thereby having a greater energy storage effect, and increasing the thrust on the positioning block 31 to ensure that the positioning block 31 can be inserted into the positioning groove 12.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined 3D printed denture, comprising an upper tooth body (1) and a lower tooth body (2), characterized in that: The top of the lower tooth body (2) is provided with a boss (21), the bottom of the upper tooth body (1) is provided with a groove (11) for inserting the boss (21), the outer side surface of the boss (21) is circumferentially distributed with multiple groups of positioning members (3), and the inner wall of the groove (11) is provided with a positioning groove (12) for inserting the positioning member (3); The positioning member (3) comprises a positioning block (31) and an elastic pressing piece (32); a mounting groove (211) is provided on the boss (21); the positioning block (31) and the elastic pressing piece (32) are both arranged in the mounting groove (211); and the elastic pressing piece (32) can drive the positioning block (31) to move out of the mounting groove (211); Connecting members (4) are arranged between the positioning blocks (31) of the plurality of groups of positioning members (3), and a receiving groove (212) for receiving the connecting member (4) is provided in the middle of the boss (21).

2. The combined 3D printed denture according to claim 1, characterized in that: The connecting member (4) comprises a connecting plate (41) and a plurality of connecting belts (42) circumferentially distributed on the connecting plate, wherein the plurality of connecting belts (42) are connected one by one to one ends of the plurality of positioning blocks (31) located in the mounting groove (211), and the elastic pressing plate (32) is provided with a through hole for the connecting belt (42) to pass through.

3. The combined 3D printed denture according to claim 2, characterized in that: There is a distance between the connecting plate (41) and the bottom wall of the accommodating groove (212); when the connecting plate (41) moves to abut against the bottom wall of the accommodating groove (212), it drives the plurality of positioning blocks (31) to move into the installation groove (211).

4. The combined 3D printed denture according to claim 2, characterized in that: An inserting strip (43) is provided at one end of the connecting belt (42) away from the connecting plate (41), and an inserting groove (311) for inserting the inserting strip (43) is provided through the positioning block (31).

5. The combined 3D printed denture according to claim 4, characterized in that: The cross-sectional shapes of the plug-in strip (43) and the plug-in slot (311) are both dovetail-shaped.

6. The combined 3D printed denture according to claim 1, characterized in that: The elastic pressing piece (32) comprises a bending piece (321) and inclined pieces (322) arranged at both ends of the bending piece (321); when the positioning block (31) is located in the mounting groove (211), the inclined piece (322) tends to be in a vertical state and stores energy.

7. The combined 3D printed denture according to claim 6, characterized in that: A recessed portion (3211) is provided at the center of the bending piece (321).

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