CN209751260U - Dental implant and dental implant assembly - Google Patents
Dental implant and dental implant assembly Download PDFInfo
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- CN209751260U CN209751260U CN201822165493.0U CN201822165493U CN209751260U CN 209751260 U CN209751260 U CN 209751260U CN 201822165493 U CN201822165493 U CN 201822165493U CN 209751260 U CN209751260 U CN 209751260U
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Abstract
The utility model discloses a dental implant, the whole body of the dental implant is arranged along the vertical direction; a concave cavity with an upward opening is formed in the dental implant, and a first inner conical surface, an inner rotation stopping surface and a first inner thread surface are sequentially arranged on the surface of the concave cavity from top to bottom; the lower end of the first inner conical surface is small, and the upper end of the first inner conical surface is large; the cross section of the inner rotation stopping surface is in a rotation stopping shape, and the rotation stopping shape is that at least one bulge or recess is arranged on the circumference of a circular basic circle; the first internal thread surface is provided with threads, and the upper side screw surface of the threads is provided with a wedge surface. The utility model also discloses a dental implant subassembly, including above-mentioned dental implant, still include base station, central screw. The utility model discloses a set up the tapered surface on the internal thread of implant, the normal direction atress of screw thread is bigger under the effect of the same pretension, and friction torque between the screw thread is bigger, makes internal thread and external screw thread connection more fasten firm. The utility model is used for plant the artificial tooth.
Description
Technical Field
The utility model relates to a dentistry field, in particular to dental implant subassembly.
Background
At present, there are three major methods for repairing a missing tooth, namely, a removable denture, a fixed denture, and an implant denture, and the implant denture is generally composed of a dental implant, an abutment, a central screw, and the like, so the implant denture is also called a dental implant component. The dental implant assembly is the first choice for repairing the missing tooth, and overcomes the defects of the movable false tooth, such as unattractive appearance, discomfort and daily cleaning, and does not need to grind the adjacent healthy tooth at the missing part like the fixed false tooth. However, in the conventional dental implant assembly, the connection between the internal thread of the implant and the external thread of the central screw is easy to loosen.
SUMMERY OF THE UTILITY MODEL
the to-be-solved technical problem of the utility model is: provides a dental implant component which is firmly connected and fastened by the internal thread of the implant and the external thread of the central screw.
The utility model provides a solution of its technical problem is:
A dental implant, the whole body of the dental implant is arranged along the vertical direction; a concave cavity with an upward opening is formed in the dental implant, and a first inner conical surface, an inner rotation stopping surface and a first inner thread surface are sequentially arranged on the surface of the concave cavity from top to bottom; the lower end of the first inner conical surface is small, and the upper end of the first inner conical surface is large; the cross section of the inner rotation stopping surface is in a rotation stopping shape, and the rotation stopping shape is that at least one bulge or recess is arranged on the circumference of a circular basic circle; the first internal thread surface is provided with threads, the upper side spiral surface of the threads is provided with a wedge surface, the wedge surface and the vertical direction form an angle A, the upper side spiral surface of the threads and the vertical direction form an angle B, the lower side spiral surface of the common threads and the vertical direction form an angle C, the angle A is smaller than the angle B, and the angle B and the angle C are complementary angles.
As a further improvement of the technical scheme, the inner rotation stopping surface is a hexagon socket surface, and the rotation stopping surface is a regular hexagon; angle a is equal to 30 °.
As a further improvement of the technical proposal, the outer side surface of the dental implant is provided with a neck part, and the neck part is provided with a plurality of rings of annular grooves.
As a further improvement of the technical scheme, the outer side surface of the dental implant is also provided with an upper conical section and a lower conical section, the neck, the upper conical section and the lower conical section are sequentially arranged from top to bottom, and the upper conical section and the lower conical section are both provided with external threads.
As a further improvement of the technical scheme, a self-tapping groove is arranged below the side surface of the lower conical section, and the bottom surface of the lower conical section is a spherical surface.
A dental implant component comprises the dental implant, an abutment and a central screw; a through hole in the vertical direction is formed in the base station, a second inner conical surface is arranged in the through hole, a working surface, a first outer conical surface and an outer rotation stopping surface are sequentially arranged outside the base station from top to bottom, the lower end of the first outer conical surface is small, the upper end of the first outer conical surface is large, and the conical angle of the first outer conical surface is equal to that of the first inner conical surface; the outer part of the central screw is sequentially provided with a second outer conical surface and a first outer thread surface from top to bottom, the lower end of the second outer conical surface is small, the upper end of the second outer conical surface is large, and the conical angle of the second outer conical surface is equal to that of the second inner conical surface; the abutment is arranged in a concave cavity of the dental implant, the outer rotation stopping surface is connected with the inner rotation stopping surface in a rotation stopping way, and the first outer circular conical surface is abutted with the first inner circular conical surface; the central screw passes through the through hole, the first external thread surface is in threaded connection with the first internal thread surface, and the second external conical surface is abutted with the second internal conical surface.
As a further improvement of the technical scheme, the upper end of the neck is provided with a first chamfer; the lower extreme of interior spline is equipped with first fillet, and the lower extreme of first fillet is equipped with the second chamfer, and the second chamfer is connected with the upper end of first internal thread face.
As a further improvement of the technical scheme, the whole working surface is cylindrical, and a plane is arranged on the working surface.
as a further improvement of the above technical solution, the lower end of the lower conical section is small and the upper end is large, the lower end of the upper conical section is small and the upper end is large, the angle range of the taper angle of the lower conical section is 8 ° to 24 °, the angle range of the taper angle of the first inner conical surface is 16 ° to 32 °, and the angle range of the taper angle of the second inner conical surface is 20 ° to 60 °.
as a further improvement of the above technical solution, the taper angle of the lower tapered section is 16 °, the taper angle of the first inner tapered surface is 24 °, and the taper angle of the second inner tapered surface is 30 °.
The utility model has the advantages that: by arranging the wedge surface on the internal thread of the implant, the normal stress of the thread is larger under the action of the same pre-tightening force, and the friction torque between the threads is larger, so that the connection between the internal thread and the external thread is more firmly and firmly fixed. The utility model is used for plant the artificial tooth.
drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
FIG. 1 is a front view of an embodiment of a middle dental implant of the present invention;
FIG. 2 is a cross-sectional view taken at the J-J position of FIG. 1;
FIG. 3 is an enlarged partial view of the M position of FIG. 2;
FIG. 4 is a schematic view of an embodiment of a middle dental implant assembly according to the present invention;
FIG. 5 is an enlarged partial view of the N position of FIG. 4;
Fig. 6 is a front view of the middle base station of the present invention;
FIG. 7 is a cross-sectional view taken at the position K-K in FIG. 6;
Fig. 8 is a front view of the center screw of the present invention.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. The utility model provides an each technical feature can the interactive combination under the prerequisite of conflict each other.
Referring to fig. 1 to 3, this is an embodiment of the middle dental implant of the present invention, specifically:
A dental implant, the whole body of the dental implant is arranged along the vertical direction; a concave cavity with an upward opening is formed in the dental implant, and a first inner conical surface 13, an inner rotation stopping surface 14 and a first inner thread surface 15 are sequentially arranged on the surface of the concave cavity from top to bottom; the lower end of the first inner conical surface 13 is small, and the upper end is large; the cross section of the inner rotation-stopping surface 14 is in a rotation-stopping shape, and the rotation-stopping shape is that at least one bulge or recess is arranged on the circumference of a circular basic circle; the first inner thread surface 15 is provided with a thread, the upper side spiral surface of the thread is provided with a wedge surface 151, the wedge surface 151 and the vertical direction form an angle A, the upper side spiral surface of the thread and the vertical direction form an angle B, the lower side spiral surface of the common thread and the vertical direction form an angle C, the angle A is smaller than the angle B, and the angle B and the angle C are complementary angles. The first inner conical surface 13 can be used for fitting with other parts, and the inner rotation stop surface 14 can be used for clamping with other parts. Because the angle a is smaller than the angle B, that is, the inclined wedge surface 151 has a larger inclination, according to the principle of force synthesis and decomposition in bolt connection, under the same pre-tightening force, the inclined wedge surface 151 can make the normal stress of the threads larger when the first internal thread surface 15 is engaged with the external threads, and the friction torque between the threads is larger, so that the connection between the internal threads and the external threads is more firmly fastened. Meanwhile, the first inner thread surface 15 can be matched with a standard common outer thread, so that the manufacturing cost can be effectively reduced.
in a further preferred embodiment, the inner rotation-stopping surface 14 is a hexagon socket surface, and the rotation-stopping shape is a regular hexagon; angle a is equal to 30 °. The hexagon socket is more general, so that the manufacture of the inner rotation stopping surface 14 is more convenient, and the manufacturing cost is reduced. The rotation stopping shape of the regular hexagon is that six angular bulges are added on the basis of a basic circle. The angle of 30 degrees is a common angle in thread processing, so that the wedge surface 151 is more convenient to manufacture, and the manufacturing cost is reduced.
In a further preferred embodiment, the outer side of the dental implant is provided with a neck portion 11, and the neck portion 11 is provided with a plurality of annular grooves 111. The annular groove 111 reduces the compression of cortical bone when the dental implant is mounted to the abutment, preventing cervical bone resorption and resulting in stable cervical osseointegration.
Further preferably, the outer side surface of the dental implant is further provided with an upper conical section 122 and a lower conical section 121, the neck portion 11, the upper conical section 122 and the lower conical section 121 are arranged in sequence from top to bottom, and both the upper conical section 122 and the lower conical section 121 are provided with external threads. The structure enables the dental implant to be conveniently implanted, and can effectively reduce the operation time.
in a further preferred embodiment, a self-tapping groove 1211 is provided below the side surface of the lower tapered section 121, and the bottom surface of the lower tapered section 121 is a spherical surface. The self-tapping groove 1211 facilitates cutting of cancellous bone, and can form a bone chip discharge passage, so that the cut cancellous bone can smoothly go upward, and the implantation process is more convenient.
Referring to fig. 4 to 8, this is an embodiment of the middle dental implant assembly of the present invention, specifically:
A dental implant component comprises the dental implant, an abutment 2 and a central screw 3; a through hole along the vertical direction is formed in the base platform 2, a second inner conical surface 26 is arranged in the through hole, a working surface 24, a first outer conical surface 22 and an outer rotation stopping surface 21 are sequentially arranged outside the base platform 2 from top to bottom, the lower end of the first outer conical surface 22 is small, the upper end of the first outer conical surface 22 is large, and the conical angle of the first outer conical surface 22 is equal to that of the first inner conical surface 13; the outside of the central screw 3 is provided with a second outer conical surface 32 and a first outer thread surface 33 from top to bottom in sequence, the lower end of the second outer conical surface 32 is small, the upper end of the second outer conical surface 32 is large, and the conical angle of the second outer conical surface 32 is equal to that of the second inner conical surface 26; the abutment 2 is arranged in a concave cavity of the dental implant, the outer rotation stopping surface 21 is connected with the inner rotation stopping surface 14 in a rotation stopping way, and the first outer conical surface 22 is abutted with the first inner conical surface 13; the central screw 3 is inserted through the through hole, the first male thread surface 33 is screwed with the first female thread surface 15, and the second male taper surface 32 is abutted with the second female taper surface 26. First outer conical surface 22 and first inner conical surface 13 butt, second outer conical surface 32 and the butt of second inner conical surface 26 can play the effect of the laminating of morse's conical surface, thereby can produce certain pulling resistance and connect tightly, played cold welded effect, thereby can also completely cut off bacterium and residue simultaneously and avoid infecting. The first external thread surface 33 is in threaded connection with the first internal thread surface 15, and the thread crest on the first external thread surface 33 is abutted against the tapered wedge surface in the first internal thread surface 15, so that the normal stress of the threads is larger under the same pre-tightening force, the friction torque between the threads is larger, and the connection between the internal threads and the external threads is firmer; meanwhile, the thread crest is easy to deform, so that the thread crests of all the threads can be uniformly stressed, the number of the bearing teeth is greater than that of the common threads, the bearing capacity is improved, and the service life is prolonged; in addition, the external thread and the internal thread are in line contact along the thread line, so that radial clearance which causes relative movement between the internal thread and the external thread when the dental implant component is subjected to transverse dynamic load is eliminated, and the dental implant component is prevented from loosening better.
Further as a preferred embodiment, the upper end of the neck 11 is provided with a first chamfer 112; the lower end of the internal rotation stop surface 14 is provided with a first fillet 142, the lower end of the first fillet 142 is provided with a second chamfer 141, and the second chamfer 141 is connected with the upper end of the first internal thread surface 15. The first chamfer 112 provided on the neck 11 provides better soft tissue space and avoids bone resorption. The second chamfer 141 and the first fillet 142 between the internal rotation stop surface 14 and the first internal thread surface 15 avoid stress concentration and improve the fatigue resistance of the dental implant.
Further, in a preferred embodiment, the working surface 24 is formed in a cylindrical shape as a whole, and a flat surface 241 is provided on the working surface 24. The plane 241 is arranged on the working surface 24, so that the abutment 2 is convenient to clamp during processing, the processing difficulty is reduced, and the plane 241 can be used for preventing the dental crown mounted subsequently from rotating.
Further, in a preferred embodiment, the lower end of the lower tapered section 121 is small and the upper end is large, the lower end of the upper tapered section 122 is small and the upper end is large, the taper angle of the lower tapered section 121 ranges from 8 ° to 24 °, the taper angle of the first inner tapered surface 13 ranges from 16 ° to 32 °, and the taper angle of the second inner tapered surface 26 ranges from 20 ° to 60 °. Within the range of the taper angle, the lower tapered section 121 can be screwed into the gum better, and the abutting effect of the first inner tapered surface 13 and the first outer tapered surface 22, and the second inner tapered surface 26 and the second outer tapered surface 32 is better.
Further as a preferred embodiment, the taper angle of the lower tapered section 121 is 16 °, the taper angle of the first inner tapered surface 13 is 24 °, and the taper angle of the second inner tapered surface 26 is 30 °. According to practical manufacturing and use experience, the screwing effect of the lower conical section 121 is optimal, and the abutting effect of the first inner conical surface 13 and the first outer conical surface 22, and the abutting effect of the second inner conical surface 26 and the second outer conical surface 32 are optimal.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (10)
1. A dental implant, characterized by:
The whole body of the dental implant is arranged along the vertical direction;
A concave cavity with an upward opening is arranged inside the dental implant, and a first inner conical surface (13), an inner rotation stopping surface (14) and a first inner thread surface (15) are sequentially arranged on the surface of the concave cavity from top to bottom; the lower end of the first inner conical surface (13) is small, and the upper end is large;
the cross section of the inner rotation stopping surface (14) is in a rotation stopping shape, and at least one bulge or recess is arranged on the circumference of a circular basic circle;
The first inner thread surface (15) is provided with a thread, the upper side spiral surface of the thread is provided with a wedge surface (151), the wedge surface (151) forms an angle A with the vertical direction, the upper side spiral surface of the thread forms an angle B with the vertical direction, the lower side spiral surface of the common thread forms an angle C with the vertical direction, the angle A is smaller than the angle B, and the angle B and the angle C are complementary angles.
2. A dental implant according to claim 1, wherein: the inner rotation stopping surface (14) is a hexagon socket surface, and the rotation stopping shape is a regular hexagon; angle a is equal to 30 °.
3. A dental implant according to claim 1, wherein: the outer side surface of the dental implant is provided with a neck part (11), and the neck part (11) is provided with a plurality of annular grooves (111).
4. A dental implant according to claim 3, wherein: the outer side surface of the dental implant is also provided with an upper conical section (122) and a lower conical section (121), the neck (11), the upper conical section (122) and the lower conical section (121) are sequentially arranged from top to bottom, and the upper conical section (122) and the lower conical section (121) are both provided with external threads.
5. A dental implant according to claim 4, in which: a self-tapping groove (1211) is arranged below the side surface of the lower conical section (121), and the bottom surface of the lower conical section (121) is a spherical surface.
6. A dental implant assembly comprising a dental implant according to any one of claims 1 to 5, wherein: the device also comprises a base station (2) and a central screw (3);
A through hole in the vertical direction is formed in the base platform (2), a second inner conical surface (26) is arranged in the through hole, a working surface (24), a first outer conical surface (22) and an outer rotation stopping surface (21) are sequentially arranged outside the base platform (2) from top to bottom, the lower end of the first outer conical surface (22) is small, the upper end of the first outer conical surface (22) is large, and the conical angle of the first outer conical surface (22) is equal to that of the first inner conical surface (13);
a second outer conical surface (32) and a first outer thread surface (33) are sequentially arranged outside the central screw (3) from top to bottom, the lower end of the second outer conical surface (32) is small, the upper end of the second outer conical surface is large, and the conical angle of the second outer conical surface (32) is equal to that of the second inner conical surface (26);
The abutment (2) is arranged in a concave cavity of the dental implant, the outer rotation stopping surface (21) is connected with the inner rotation stopping surface (14) in a rotation stopping way, and the first outer circular conical surface (22) is abutted with the first inner circular conical surface (13);
The central screw (3) passes through the through hole, the first external thread surface (33) is in threaded connection with the first internal thread surface (15), and the second external conical surface (32) is abutted with the second internal conical surface (26).
7. a dental implant assembly according to claim 6, in which: the upper end of the neck part (11) is provided with a first chamfer (112); the lower end of the inner rotation stopping surface (14) is provided with a first fillet (142), the lower end of the first fillet (142) is provided with a second chamfer (141), and the second chamfer (141) is connected with the upper end of the first inner thread surface (15).
8. A dental implant assembly according to claim 6, in which: the working surface (24) is cylindrical as a whole, and a plane (241) is arranged on the working surface (24).
9. A dental implant assembly according to claim 6, in which: the lower end of the lower conical section (121) is small, the upper end of the lower conical section is large, the lower end of the upper conical section (122) is small, the upper end of the upper conical section is large, the angle range of the conical angle of the lower conical section (121) is 8-24 degrees, the angle range of the conical angle of the first inner conical surface (13) is 16-32 degrees, and the angle range of the conical angle of the second inner conical surface (26) is 20-60 degrees.
10. A dental implant assembly according to claim 9, in which: the conical angle of the lower conical section (121) is 16 degrees, the conical angle of the first inner conical surface (13) is 24 degrees, and the conical angle of the second inner conical surface (26) is 30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822165493.0U CN209751260U (en) | 2018-12-21 | 2018-12-21 | Dental implant and dental implant assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822165493.0U CN209751260U (en) | 2018-12-21 | 2018-12-21 | Dental implant and dental implant assembly |
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| Publication Number | Publication Date |
|---|---|
| CN209751260U true CN209751260U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822165493.0U Active CN209751260U (en) | 2018-12-21 | 2018-12-21 | Dental implant and dental implant assembly |
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| CN (1) | CN209751260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113057751A (en) * | 2021-03-15 | 2021-07-02 | 周陈锋 | Bacteriostatic implanted tooth root and manufacturing method thereof |
-
2018
- 2018-12-21 CN CN201822165493.0U patent/CN209751260U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113057751A (en) * | 2021-03-15 | 2021-07-02 | 周陈锋 | Bacteriostatic implanted tooth root and manufacturing method thereof |
| CN113057751B (en) * | 2021-03-15 | 2022-02-08 | 周陈锋 | Bacteriostatic implanted tooth root and manufacturing method thereof |
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Address after: 511457 room 101-103, No. 37, Jinlong Road, Nansha street, Nansha District, Guangzhou City, Guangdong Province (can not be used as a workshop) Patentee after: Guangdong Jianchi Biotechnology Co.,Ltd. Address before: 511464 x5056, 5th floor, management committee building, Jiuyong section, Yuehai Avenue, Wanqingsha Town, Nansha District, Guangzhou City, Guangdong Province (office use only) (WB) Patentee before: GUANGZHOU JIANCHI BIOTECHNOLOGY Co.,Ltd. |