Dental implant model and dental implant model kit

Abstract

The present application relates to an implant dental model and an implant dental model kit, the implant dental model is manufactured by 3D printing, the implant dental model comprises a substitute body interface, the substitute body interface comprises a threaded connection structure, and the crest width of the thread of the connection structure is 100 [mu] m-600 [mu] m. The dental implant model provided by the utility model is manufactured by adopting 3D printing, and the crest width of the thread of the connecting structure is 100-600 [mu] m, so that the constructed thread feature is formed by a plurality of curing layers, and the manufacturing of the dental implant model with the substitute body feature is realized on the basis of meeting the precision requirement of 3D printing; in addition, the crest of the thread can have a certain width, the thread teeth have a certain thickness, the thread pitch is increased, the stress stability of the thread structure can be improved, the thread structure can be screwed repeatedly under the fixed required torque without loosing, the thread abrasion condition of the connecting structure can be reduced, and the assembly feature of the plastic dental implant model is prevented from being damaged in the assembly process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral medical treatment, and in particular to a dental implant model and a dental implant model kit. BACKGROUND

[0002] Dental restoration systems can be used to reconstruct defects of a patient's lower jaw, such as missing or misaligned teeth. Through the dental restoration system, one or more missing teeth of a patient can be restored, for which components suitable for the patient, such as dental implants, intermediate structures (such as abutments) and final prostheses or restorations (such as crowns, bridges or dentures) need to be manufactured.

[0003] At the stage of manufacturing the final prostheses or restorations, the intermediate structure (such as the abutment) needs to be disassembled and assembled on the temporary model (such as a 3D printed dental model made according to scanning data) multiple times to manufacture and adjust the size and installation position of the final prostheses or restorations. In order to carry out relevant adaptability tests, a metal substitute body needs to be installed on the 3D printed dental model, and then the abutment is installed on the metal substitute body through threaded connection or the like.

[0004] Since the assembly of the metal substitute body and the 3D printed dental model increases the operation process, and the manufacturing cost of the metal substitute body is relatively high, the prior art proposes a technical solution of manufacturing a plastic substitute body through 3D printing technology. However, when the abutment is assembled, the operator cannot directly observe the assembly state between the metal abutment and the plastic substitute body; nor can the operator determine whether the assembly is in place through the tactile feedback of the installation tool; it is easy to cause the specific installation position of the metal abutment to be inconsistent when the metal abutment is disassembled and assembled on or in the plastic substitute body multiple times, or the metal abutment is installed too high and damages the assembly features of the plastic substitute body. Ultimately, the crown processing error is large when relying on the position of the abutment to be manufactured, and the crown cannot be correctly worn in the patient's mouth. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a dental implant model and a dental implant model kit to solve the technical problem that the assembly features of the plastic substitute body are easily damaged when the plastic substitute body is assembled with the metal abutment in the prior art.

[0006] In a first aspect, the present application provides a dental implant model manufactured by 3D printing, comprising a substitute body interface, the substitute body interface comprising a threaded connection structure, and the thread of the connection structure has a crest width of 100 μm to 600 μm.

[0007] Optionally, the thread of the connection structure has a crest width of 250 μm to 400 μm.

[0008] Optionally, the thread of the connection structure has a thread angle of 20° to 90°.

[0009] Optionally, the alternative body interface further comprises a limiting structure, a cross-sectional area of the limiting structure gradually decreases in a direction towards the connecting structure.

[0010] Optionally, the alternative body interface further comprises a hole-shaped positioning structure, the positioning structure is configured to limit rotation of the abutment cooperating with the dental implant model.

[0011] Optionally, the positioning structure has a cross-sectional shape of a regular polygon or an ellipse.

[0012] Optionally, the alternative body interface further comprises a guide structure, the guide structure comprises:

[0013] a supporting surface parallel to a horizontal plane; and

[0014] a guide surface inclined to the supporting surface and adjacent to or intersecting the supporting surface.

[0015] Optionally, the guide surface is a plane with a fixed slope,

[0016] or is a curved surface with a variable slope.

[0017] Optionally, the guide surface is one, and the guide surface extends from one side of the supporting surface towards the connecting structure;

[0018] or is two, and the two guide surfaces respectively extend from opposite sides of the supporting surface towards the connecting structure.

[0019] Optionally, the guide structure is multiple, and the multiple guide structures are arranged along a circumference of the dental implant model.

[0020] In a second aspect, the present application provides a dental implant model kit, comprising the dental implant model provided in the first aspect of the present application;

[0021] an abutment cooperating with the alternative body interface; and

[0022] a fastener screwed with the connecting structure of the alternative body interface.

[0023] Optionally, the abutment comprises:

[0024] a limiting portion cooperating with the limiting structure of the alternative body interface; and / or

[0025] a positioning portion cooperating with the positioning structure of the alternative body interface.

[0026] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0027] The implant tooth mold provided by the embodiment of the present application comprises a substitute body interface, the substitute body interface comprises a threaded connection structure, and the width of the crest of the thread of the connection structure is 100-600 microns, so that the thread feature formed by the plurality of solidified layers, thereby realizing the manufacturing of the implant tooth mold with the substitute body feature on the basis of meeting the accuracy requirement of 3D printing; and the thread crest has a certain width, the thread tooth has a certain thickness, the pitch is increased, and the stress stability of the thread structure is improved, and the implant tooth mold can be screwed multiple times without slipping under the fixed torque requirement. When the metal connecting body is screwed with the plastic thread structure, the thread wear of the connection structure can be reduced, and the assembly feature of the plastic implant tooth mold can be prevented from being damaged in the assembly process.

[0028] The implant tooth mold kit provided by the embodiment of the present application comprises the implant tooth mold, and the implant tooth mold can be screwed with the fastener through the connection structure, and therefore naturally has the technical effects of the implant tooth mold. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings incorporated into the specification and constituting a part of the specification show the embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0031] One or more embodiments are exemplarily illustrated by the pictures in the drawings corresponding thereto, and the exemplarily illustrations do not constitute the limitation of the embodiments, the elements with the same reference numerals in the drawings represent the similar elements, and unless specially stated, the drawings do not constitute the proportional limitation.

[0032] Figure 1 The structural schematic diagram of the implant tooth mold provided by the embodiment of the present application;

[0033] Figure 2 The top view of the implant tooth mold provided by the embodiment of the present application;

[0034] Figure 3 The sectional view of the implant tooth mold provided by the embodiment of the present application along B-B; Figure 2

[0035] Figure 4 The detail enlarged view of the A part in the sectional view of the implant tooth mold provided by the embodiment of the present application; Figure 1

[0036] Figure 5 The sectional view of the connection structure provided by the embodiment of the present application​​Figure 1 ;

[0037] Figure 6 A cross section of the connecting structure provided for the embodiment of the present application Figure 2 ;

[0038] Figure 7 An exploded view of the dental implant template kit provided for the embodiment of the present application

[0039] Figure 8 A structural schematic view of the abutment provided for the embodiment of the present application

[0040] Figure 9 A bottom view of the abutment provided for the embodiment of the present application

[0041] Figure 10 A partial cross-sectional view of the dental implant template kit provided for the embodiment of the present application

[0042] Figure 11 A detail enlarged view of the C part in the Figure 10

[0043] A detail enlarged view of the D part in the Figure 12 Figure 10

[0044] A detail enlarged view of the E part in the Figure 13 Figure 10

[0045] A detail enlarged view of the F part in the Figure 14 Figure 10

[0046] Legend of reference signs:

[0047] 1. dental implant template; 11. guiding structure; 111. first guiding surface; 112. second guiding surface; 113. supporting surface; 12. positioning structure; 121. positioning surface; 122. positioning hole; 13. connecting structure; 131. first threaded structure; 132. second threaded structure; 14. limiting structure;

[0048] 2. abutment; 21. positioning part; 22. counterbore; 23. limiting part; 24. guiding part; 25. mounting part;

[0049] 3. fastener. DETAILED DESCRIPTION

[0050] ​​​​In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0051] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of the specific examples are described in the following. Of course, they are only examples and are not intended to limit the present application. In addition, reference numerals and / or letters can be repeated in different examples in the present application. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or arrangements being discussed.

[0052] For the purpose of description, spatial relative terms can be used in the description to describe the relative position relationship or movement condition of one element or feature with respect to another element or feature as shown in the drawings, such as "inner", "outer", "inboard", "outboard", "under", "below", "over", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is flipped over or the posture is changed or the movement condition is changed, then the directional indications are also changed accordingly, for example: the element described as "under" or "below" another element or feature will be oriented as "above" or "above" another element or feature. Therefore, the example term "below" can include both the up and down positions. The device can be additionally oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0053] To solve the technical problem that the assembly features of the plastic substitute body are easily damaged when the plastic substitute body is assembled with the metal abutment in the prior art, the application provides a dental implant model 1 and a dental implant model kit. The dental implant model 1 comprises a substitute body interface for connecting an abutment 2 and a fastener 3. The substitute body interface comprises a threaded connection structure 13, and the width of the thread crest of the connection structure 13 is 100 μm to 600 μm. Since the thread crest has a certain width, the thread tooth has a certain thickness, and the pitch is increased, the force stability of the threaded structure is improved, and the threaded structure can be screwed multiple times without slipping under the fixed torque requirement. When the metal connecting body is screwed with the plastic threaded structure, the thread wear of the connection structure can be reduced, and the assembly features of the plastic dental implant model are prevented from being damaged during assembly.

[0054] Please refer to Figures 1 to 14 The first aspect of the embodiment of the application provides a dental implant model 1 manufactured by 3D printing (for example, made of photosensitive resin), comprising a substitute body interface, the substitute body interface is used for connecting an abutment 2 and a fastener 3, as shown in Figure 1 、 Figure 7 and Figure 10 , so as to facilitate fixing the abutment 2 and the fastener 3 on the dental implant model 1, thereby facilitating the production of a restoration on the abutment 2.

[0055] The substitute body interface comprises a threaded connection structure 13, and the width of the thread crest of the connection structure 13 is 100 μm to 600 μm, for example, 150 μm to 500 μm, for example, 200 μm to 450 μm, for example, 250 μm to 400 μm, for example, 300 μm to 350 μm.

[0056] Those skilled in the art can understand that the size of the dental implant model 1 of the application is adapted to the metal abutment and / or the dental crown used in the patient's mouth subsequently, and therefore the dimensional accuracy requirement is relatively high. In the related art, the accuracy of the threads of the substitute body, the abutment and the screw made of metal by machining (cutting) is, for example, 5 μm to 20 μm. The metal parts with this accuracy also have good wear resistance.

[0057] The implant model provided in the present application includes the structural features of the abutment, and therefore omits the use of a metal abutment in the related art. Specifically, the present application manufactures an implant model having abutment features (i.e., abutment interfaces) through 3D printing (e.g., light-cured 3D printing). 3D printing is a way of manufacturing products through layer-by-layer accumulation, and the manufactured products exhibit "layer lines" on the profile surface. In addition, the accuracy of 3D printing (referring to the accuracy using commercially available conventional 3D printing equipment) is not as good as that of mechanical processing. For example, the thickness of a single layer of 3D printing construction is 50-100 μm. If the pitch of the thread of the connecting structure 13 of the abutment interface of the implant model is, for example, less than 50 μm or 100 μm (the pitch is greater than the crest width), the thread feature of the connecting structure 13 can not be obtained by 3D printing (although it can be obtained by mechanical processing).

[0058] At least for the purpose of manufacturing features, the crest width of the fastener 3 and the connecting structure 13 designed in the present application is 100-600 μm, which makes the constructed thread feature formed by multiple solidified layers, so as to realize the manufacturing of the implant model with abutment features on the basis of meeting the accuracy requirements of 3D printing.

[0059] It should be noted that the thread of the connecting structure 13 is preferably rectangular thread, trapezoidal thread or zigzag thread, since the thread crest has a certain width (100-600 μm) and the thread tooth has a certain thickness, the pitch is increased, which is beneficial to improve the stress stability of the thread structure, and the thread can be screwed multiple times without slipping under the fixed torque requirement. When the metal connecting body is screwed with the plastic thread structure, the thread wear of the connecting structure 13 can be reduced.

[0060] In some preferred embodiments of the present application, the crest width of the thread of the connecting structure 13 is 250-400 μm.

[0061] In some embodiments of the present application, please refer to Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 10 , the connecting structure 13 is a threaded structure, so that the implant model 1 can be detachably connected with the fastener 3 through threaded connection, which is convenient for disassembling the abutment 2 and the fastener 3 after the final restoration is manufactured.

[0062] In some embodiments of the present application, please refer to Figure 5 , Figure 6 , Figure 10 and Figure 12, the thread structure is rectangular thread, trapezoidal thread or sawtooth thread, which can realize the threaded connection between the connecting structure 13 and the fastener 3. The thread angle of the thread structure is in the range of 20° to 90°, which is beneficial to the preparation of the connecting structure 13 through 3D printing.

[0063] As understood by those skilled in the art, the lower the thread angle, the closer the side adjacent to the tooth top to the horizontal plane, as shown in Figure 5 and Figure 6 , which is also beneficial to the manufacture of the thread feature through 3D printing.

[0064] In some embodiments of the present application, the thread structure is preferably rectangular thread, trapezoidal thread or sawtooth thread, which can make the thread tooth top have a certain width, the thread tooth have a certain thickness, and the pitch increase, which is beneficial to improve the stress stability of the thread structure, and can be screwed multiple times without slipping under the fixed torque requirement. When the metal connecting body is screwed with the plastic thread structure, the thread wear of the connecting structure 13 can be reduced.

[0065] In some embodiments of the present application, please refer to Figure 5 , the connecting structure 13 includes a first thread structure 131, which is trapezoidal thread, the thread angle of which is β, the tooth top width is W1, the thread height is H1, and the pitch is P1. The specific parameters can be designed according to the stress analysis of the connecting structure 13 and the related factors of 3D printing process.

[0066] In some embodiments of the present application, please refer to Figure 6 , the connecting structure 13 includes a second thread structure 132, which is trapezoidal thread, the thread angle of which is γ, the tooth top width is W2, the thread height is H2, and the pitch is P2. The specific parameters can be designed according to the stress analysis of the connecting structure 13 and the related factors of 3D printing process.

[0067] In some embodiments of the present application, W1 > W2 and P1 > P2, so that the carrying capacity of the first thread structure 131 is stronger, which is suitable for occasions where the connecting structure 13 is under greater stress; while the second thread structure 132 is more suitable for occasions where the space is limited and the thread precision and delicacy are required.

[0068] In some embodiments of the present application, please refer to Figure 3 , the alternative body interface further includes a limiting structure 14, which gradually decreases in cross-sectional area in the direction towards the connecting structure 13. For example, the limiting structure 14 has a circular cross-section.

[0069] In some embodiments of the present application, please refer to Figure 2 and Figure 3The alternative body interface further comprises a hole-shaped positioning structure 12 configured to limit the rotation of the abutment 2 in cooperation with the dental implant model 1. When the abutment 2 is installed in the positioning structure 12, the locking of the dental implant model 1 and the abutment 2 can be achieved by a fastener 3 (e.g. a screw). Specifically, the fastener 3 can be threadedly connected with a connecting structure 13 of the dental implant model 1.

[0070] In some embodiments of the present application, the cross section of the positioning structure 12 is a regular polygon (e.g. a regular triangle, a regular quadrilateral, a regular pentagon, a regular hexagon, a regular octagon) or an ellipse. Other shapes are also possible, such as a petal shape, etc.

[0071] In some embodiments of the present application, please refer to Figure 2 , Figure 4 , Figure 10 and Figure 11 The circumference of the positioning structure 12 comprises one or more positioning faces 121 for achieving positioning fit with the abutment 2, which enclose a positioning hole 122 that can be used for achieving positioning fit with the bottom of the abutment 2. The positioning face 121 is transitionally connected with the guide structure 11, which can reduce the moving resistance of the outer surface of the abutment 2 during the movement from the guide structure 11 to the state of fit with the positioning face 121.

[0072] In some embodiments of the present application, please refer to Figure 2 and Figure 4 The cross section of the positioning hole 122 is shaped as a regular polygon or an ellipse, which can be used to form a prismatic or cylindrical positioning hole 122 to facilitate the formation of uniform positioning effect on the outer circumference of the abutment 2.

[0073] In some embodiments of the present application, please refer to Figure 2 and Figure 3 The alternative body interface further comprises a guide structure 11 comprising a supporting face 113 and a guide face, wherein the supporting face 113 is parallel to a horizontal plane (the dental implant model can be understood as being placed on the horizontal plane); the guide face is inclined to the supporting face 113 and is adjacent to or intersects with the supporting face 113.

[0074] In some embodiments of the present application, the number of guide faces is one, and the guide face extends from one side of the supporting face towards the connecting structure 13.

[0075] In some other embodiments of the present application, the number of guide faces is two, which are respectively a first guide face 111 and a second guide face 112, and the two guide faces respectively extend from opposite sides of the supporting face towards the connecting structure 13, as shown in Figure 4 .

[0076] In some embodiments of the present application, please refer to Figure 1 , Figure 3 andFigure 4 The guide structure 11 comprises guide surfaces arranged along the circumference of the positioning structure 12, and the guide surfaces are arranged obliquely relative to the horizontal plane, so that the base 2 can slide along the guide surfaces with the rotation of the base 2 until the base 2 is installed in place with the positioning structure 12. When the guide surfaces are in contact with the outer surface of the base 2, the base 2 can be guided into the positioning structure 12 by the obliquely arranged guide surfaces in a non-visible manner.

[0077] In some embodiments of the present application, the guide surfaces are planes with a fixed slope; or curved surfaces with a variable slope, for example, the profile of the guide surfaces on a plane perpendicular to the horizontal plane is a part of a sine or parabola.

[0078] In some embodiments of the present application, when the axis direction of the prosthetic interface is parallel to the vertical direction, the guide surfaces are arranged obliquely downward, as shown in Figure 3 and Figure 4 , the bottom of the base 2 can slide along the guide surfaces into the positioning structure 12.

[0079] In some preferred embodiments of the present application, referring to Figure 3 , when the axis direction of the prosthetic interface is parallel to the vertical direction, the guide surfaces are arranged obliquely downward, and the angle of inclination of the guide surfaces relative to the horizontal plane is α, and the value of α is in the range of 10°≤α≤85°, because: when the angle of inclination of the guide surfaces is small, the slope of the guide surfaces is small, and the base needs a longer guide stroke to reach the position matched with the positioning structure; and when the angle of inclination of the guide surfaces is large, because the angle of inclination is large (approximately vertical), the base 2 may need to rotate a certain angle before reaching the guide surfaces during assembly, and the subsequent stroke of the base 2 on the guide surfaces will be short. Further, the value of α is preferably in the range of 30° to 60°.

[0080] In some embodiments of the present application, referring to Figure 3 and Figure 4 , the guide surfaces are obliquely arranged planes or curved surfaces, as long as they can play a guiding role for the base 2, they can achieve the purpose of the present application.

[0081] In some embodiments of the present application, referring to Figure 4 , the number of guide structures 11 is multiple, and the multiple guide structures 11 are uniformly arranged along the circumference of the positioning structure 12, which can uniformly guide the circumferential outer surface of the base 2.

[0082] In some embodiments of the present application, referring to Figure 4 , the guide structure 11 comprises at least one guide area, and each guide area comprises two guide surfaces, and each guide surface can guide the outer surface of the base 2 from different directions, so that the base 2 is adjusted to the assembly state matched with the positioning structure 12 under the cooperation of multiple guide areas.

[0083] As a specific embodiment of the present application, please refer to Figure 4 , there are a plurality of guiding structures 11 in the circumferential direction of the positioning structure 12, each guiding structure 11 includes a first guiding surface 111, a second guiding surface 112 and a supporting surface 113, wherein the first guiding surface 111 and the second guiding surface 112 are respectively arranged on the opposite sides of the supporting surface 113. When the outer surface of the abutment 2 is in contact with the first guiding surface 111, it can be rotated, for example, to the left and lowered to the assembly position of the positioning structure 12, when the outer surface of the abutment 2 is in contact with the second guiding surface 112, it can be rotated, for example, to the right and lowered to the assembly position of the positioning structure 12, when the outer surface of the abutment 2 is in contact with the supporting surface 113, it can be rotated to the left or right to correspondingly contact the first guiding surface 111 or the second guiding surface 112.

[0084] It should be noted that one or more guiding areas are provided in the circumferential direction of the positioning hole 122, and each guiding area is provided with one or more guiding surfaces. In some embodiments of the present application, when the cross-sectional shape of the positioning hole 122 is a regular polygon, a guiding area is correspondingly provided on each corner or each side of the positioning hole 122, and the plurality of guiding areas in the circumferential direction of the positioning hole 122 can play a uniform guiding role.

[0085] In some embodiments of the present application, please refer to Figure 2 , Figure 4 and Figure 8 , the cross-sectional shape of the positioning hole 122 is a regular hexagon, and the bottom of the abutment 2 is provided with a positioning part 21 matched with the positioning hole 122, and the cross-sectional shape of the positioning part 21 is also a regular hexagon. When the positioning part 21 is embedded inside the positioning hole 122, it can be determined that the abutment 2 and the dental implant model 1 have reached the accurate assembly position. At this time, the positioning part 21 (or the abutment 2) cannot rotate in the positioning hole 122, and the user can determine that the abutment 2 has been installed in place and start the subsequent fastener 3 locking operation.

[0086] Please refer to Figure 2 and Figure 3 , along the axial direction of the substitute body interface, the inner wall of the substitute body interface is provided with a limiting structure 14, a guiding structure 11, a positioning structure 12 and a connecting structure 13, the positioning structure 12 is used to realize the assembly positioning of the abutment 2, when the outer wall of the abutment 2 is in contact with the positioning structure 12, the operator can hardly determine whether it is assembled in place by visual inspection, but can determine whether it is assembled in place by touch or resistance. The guiding structure 11 is arranged extending towards the positioning structure 12, even if there is a positional offset (i.e. misalignment) between the abutment 2 and the positioning structure 12 during assembly, the abutment 2 can be accurately moved to the assembly position matched with the positioning structure 12 in the process of contacting the guiding structure 11, thereby realizing efficient and reliable assembly between the abutment 2 and the dental implant model 1.

[0087] It should be noted that the limiting structure 14, the guide structure 11, the positioning structure 12 and the connecting structure 13 on the dental implant model 1 can be made by a 3D printing process, without the need for secondary mechanical processing of the solidified plastic substitute body, which can greatly improve the production efficiency of the substitute body and reduce the manufacturing cost.

[0088] Referring to Figures 1 to 14 , the second aspect of the embodiment of the present application provides a dental implant model kit, which comprises the dental implant model 1 described in the above embodiment and can be used for the preparation and testing of the final restoration body, thereby achieving the purpose of the present application.

[0089] In some embodiments of the present application, referring to Figure 7 , Figure 8 , Figure 9 and Figure 10 , the dental implant model kit further comprises an abutment 2 and a fastener 3, the abutment 2 is in interface cooperation with the substitute body, and the fastener 3 is screwed with the connecting structure 13 of the interface of the substitute body.

[0090] In some embodiments of the present application, the dental implant model 1 of the dental implant model kit is composed of a resin material, and the abutment 2 is composed of a resin material (for example, for 3D printing) or a metal material (for example, for mechanical processing).

[0091] In some embodiments of the present application, referring to Figure 3 , Figure 4 , Figure 8 , Figure 10 and Figure 14 , the abutment 2 is provided with a limiting portion 23 and / or a positioning portion 21, wherein the limiting portion 23 cooperates with the limiting structure 14 of the interface of the substitute body, and the positioning portion 21 cooperates with the shape of the positioning structure 12 of the interface of the substitute body.

[0092] In some embodiments of the present application, referring to Figure 10 , when the limiting portion 23 is attached to the limiting structure 14, the movement of the abutment 2 towards the bottom end of the dental implant model 1 can be limited, and the installation height of the abutment 2 can be limited.

[0093] In some embodiments of the present application, referring to Figure 10 and Figure 14 , the limiting structure 14 comprises a limiting surface for achieving attachment limiting with the outer surface of the limiting portion 23. The limiting surface is a conical surface or an inclined surface, which can fix the abutment 2 at the installation height and the inclined angle limited by the limiting structure 14.

[0094] As a specific embodiment of the present application, referring to Figure 3 and Figure 4The limiting surface of the limiting structure 14 is an inverted conical surface, and correspondingly, the outer surface of the limiting portion 23 of the abutment 2 is also an inverted conical surface matching the limiting structure 14.

[0095] In some embodiments of the present application, referring to Figure 8 and Figure 9 , the abutment 2 is provided with a positioning portion 21 matching the positioning structure 12, when the positioning portion 21 is embedded with the positioning structure 12, the operator can perceive the tactile feeling of assembly in place in the case of invisibility, as shown in Figure 10 and Figure 11 , the fastener 3 is connected with the abutment 2 and the connecting structure 13 respectively, for realizing the fixation of the abutment 2 on the dental model 1, facilitating the subsequent preparation of the final restoration on the mounting portion 25 of the abutment 2.

[0096] In some embodiments of the present application, referring to Figure 2 and Figure 9 , the cross-sectional shape of the positioning portion 21 matches the cross-sectional shape of the positioning hole 122, that is, the cross-sectional shape of the positioning portion 21 can be a regular polygon or an ellipse.

[0097] Specifically, when the cross-section of the positioning hole 122 is a regular hexagon, the cross-section of the positioning portion 21 is also a regular hexagon, when the positioning portion 21 is rotated and embedded in the positioning hole 122 under the guidance of the guide structure 11, the positioning portion 21 can be limited in the accurate assembly position.

[0098] In some embodiments of the present application, referring to Figure 8 and Figure 9 , the bottom of the abutment 2 is further provided with a guide portion 24, and the projection of the guide portion 24 is located inside the positioning portion 21, the guide portion 24 can move relative to the guide structure 11 and enter the positioning structure 12 before the positioning portion 21.

[0099] It should be noted that when the threaded structure is adopted to connect the fastener 3 and the connecting structure 13, the abutment 2 and the fastener 3 are non-fixedly connected, avoiding the influence on the cooperation between the abutment 2 and the guide structure 11 and the positioning structure 12 when the abutment 2 is rotated synchronously by the fastener 3.

[0100] In some embodiments of the present application, referring to Figure 10 , Figure 12 and Figure 13 , the abutment 2 is provided with a counterbore 22 for inserting the fastener 3, which can be used to limit the bolt head of the fastener 3. The fastener 3 is rotationally arranged in the counterbore 22, so that the fastener 3 can rotate relative to the abutment 2, avoiding the influence on the cooperation between the abutment 2 and the guide structure 11 and the positioning structure 12 when the fastener 3 is threadedly connected with the connecting structure 13.

[0101] It should be noted that in the above embodiment, the installation height of the abutment 2 can be limited by the bottom surface of the positioning hole 122 abutting the bottom of the abutment 2, or by the limiting structure 14 abutting the limiting portion 23, or by the positioning structure 12 and the limiting structure 14 abutting the positioning portion 21 and the limiting portion 23 respectively, all of which can achieve the purpose of the present application.

[0102] Please refer to Figures 1 to 14 In some embodiments of the present application, the assembly process of the dental implant mold set is as follows:

[0103] Step one: place and set the dental implant mold 1;

[0104] Step two: extend the bottom of the abutment 2 into the substitute body interface of the dental implant mold 1. If the positioning portion 21 of the abutment 2 is not aligned with the positioning structure 12, the positioning portion 21 can be rotated and lowered to the position where the positioning portion 21 is aligned with the positioning structure 12 through the inclined guide surface in the guide structure 11, and the positioning portion 21 is guided by the guide structure 11 and is embedded into the positioning hole 122;

[0105] Step three: when the positioning portion 21 and the positioning structure 12 are completely embedded, it cannot be rotated further, which can prompt the operator that the assembly is in place. Further, the limiting portion 23 of the abutment 2 abuts against the limiting structure 14, which can limit the abutment 2 to the accurate assembly position and installation height;

[0106] Step four: insert the fastener 3 from the counterbore 22 of the abutment 2, and realize the threaded connection between the bottom of the fastener 3 and the connecting structure 13 through a tool, thereby realizing the fixed setting of the abutment 2.

[0107] It should be noted that the inner wall of the alternative body interface is provided with a limiting structure 14, a guide structure 11, a positioning structure 12 and a connecting structure 13 along the axial direction of the alternative body interface, the positioning structure 12 is used for realizing assembly positioning of the abutment 2, ensuring that the abutment 2 is installed in place after part of the abutment 2 extends into the positioning structure 12, so as to feed back the assembly-in-place touch feeling in the invisible case; and the guide structure 11 is arranged to extend towards the positioning structure 12, so that even if the assembly position of the abutment 2 and the dental implant model 1 is misaligned, the abutment 2 can be accurately moved to the assembly position matched with the positioning structure 12 through the guide structure 11, realizing efficient and reliable assembly between the abutment 2 and the dental implant model 1. If the above design is not adopted, the operator is difficult to accurately align the abutment 2 and the dental implant model 1 in the invisible case; or the operator uses too much force for installation without sensory feedback, which will have adverse effects on subsequent cooperation after causing damage to the dental implant model 1. For example, too high installation of the abutment 2 will cause too high position of the crown, and too low installation will cause too low position of the crown, etc., finally, the crown (the final in-mouth wearing restoration) made in reliance on the position of the abutment 2 has a large processing error and cannot be correctly worn in the patient's mouth.

[0108] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0109] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to differentiate one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms when used herein do not imply a sequence or order unless the context clearly indicates otherwise. Therefore, a first element, component, region, layer or section discussed below can be called a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0110] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. A dental implant mold (1), manufactured by 3D printing, characterized in that, It includes a substitute body interface, the substitute body interface including a threaded connection structure (13), the thread crest width of the connection structure (13) being 100μm to 600μm.

2. The dental implant mold (1) according to claim 1, characterized in that, The thread crest width of the connection structure (13) is 250μm to 400μm.

3. The dental implant mold (1) according to claim 1, characterized in that, The thread angle of the connecting structure (13) is 20° to 90°.

4. The dental implant mold (1) according to claim 1, characterized in that, The alternative interface also includes a limiting structure (14), the cross-sectional area of ​​which gradually decreases along the direction toward the connecting structure (13).

5. The dental implant mold (1) according to claim 1, characterized in that, The replacement interface also includes a perforated positioning structure (12) configured to restrict the rotation of the abutment (2) that mates with the implant model (1).

6. The dental implant mold (1) according to claim 5, characterized in that, The cross-sectional shape of the positioning structure (12) is a regular polygon or an ellipse.

7. The dental implant mold (1) according to any one of claims 1 to 6, characterized in that, The alternative interface further includes a guide structure (11), the guide structure (11) comprising: Support surface (113), said support surface (113) being parallel to the horizontal plane; and A guide surface that is inclined to the support surface (113) and is adjacent to or intersects the support surface (113).

8. The dental implant mold (1) according to claim 7, characterized in that, The guide surface is a plane with a fixed slope. Alternatively, the guide surface may be a curved surface with a varying slope.

9. The dental implant mold (1) according to claim 7, characterized in that, The number of guide surfaces is one, and the guide surface extends from one side of the support surface (113) toward the connecting structure (13); Alternatively, there may be two guide surfaces, which extend from opposite sides of the support surface (113) toward the connecting structure (13).

10. The dental implant mold (1) according to claim 7, characterized in that, The number of the guide structures (11) is multiple, and the multiple guide structures (11) are arranged circumferentially along the implant mold (1).

11. A dental implant mold kit, characterized in that, include: The dental implant model (1) as described in any one of claims 1 to 10; A base (2) that mates with the interface of the substitute body; and Fastener (3) is screwed into the connection structure (13) of the substitute body interface.

12. The dental implant mold kit according to claim 11, characterized in that, The base (2) includes: A limiting part (23) that cooperates with a limiting structure (14) of the substitute body interface; and / or The positioning part (21) is shaped to match the positioning structure (12) of the substitute body interface.

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