Two-segment dental implant system

Abstract

The utility model discloses a two-section type dental implant system and relates to a dental implant system. The utility model aims to provide a two-section type dental implant system which is free of electrochemical corrosion effect, free of metal allergy, low in peri-implantitis morbidity, free of peculiar smell and high in strength. The two-section type dental implant system comprises a dental implant and an abutment, both the dental implant and the abutment are made of ceramic materials, the dental implant comprises an outer anti-rotation structure, a regular-cone-shaped sealing conical surface is arranged below the outer anti-rotation structure, a root is arranged below the regular-cone-shaped sealing conical surface, and the root is connected with the outer anti-rotation structure. An inner anti-rotation structure and an inner thread structure are arranged in the dental implant, the abutment comprises a gum penetrating part, the diameter of a connector at the bottom connector position of the gum penetrating part is the same as that of a root, an inward abutment sealing conical surface is machined at the bottom of the gum penetrating part, and the taper of the abutment sealing conical surface is the same as that of a dental implant sealing conical surface. An anti-rotation groove is formed in the inner side of a bottom connector of the gum penetrating part, and an abutment screw channel is formed in the abutment.

Description

Technical Field

[0001] The utility model relates to the technical field of dental implants, in particular to a two-stage dental implant system. Background Art

[0002] The dental implant and abutment system is a surgical procedure that implants the dental implants into the upper and lower jaws of the human body where the teeth are missing. After the surgical wound heals, the abutment and dentures are installed on top to solve the functional and aesthetic problems caused by missing and damaged teeth.

[0003] Traditional dental implants and abutments are mostly made of metal materials such as titanium alloy, pure titanium, and tantalum. During clinical use, a potential difference will be generated in the oral cavity, causing electrochemical corrosion, which will affect the service life of the dental implants and abutments and the health of the patient. Due to the particularity of metal materials, some patients will naturally have allergic reactions, causing secondary pain to the patients. Dental implants and abutments made of metal materials are metallic in color. As the patient ages, the gums shrink and the alveolar bone is absorbed, which can easily expose the dental implants and abutments, affecting the aesthetics of the patient's oral cavity. The neck of traditional metal dental implants is relatively rough and is very easy to adhere to plaque, which greatly increases the incidence of peri-implantitis.

[0004] In view of the above-mentioned drawbacks of metal materials, the use of alternative ceramic materials is a good solution, but ceramic materials have poor toughness and low strength, which cannot meet the needs of clinical use, restricting the development of ceramic implants. In the design of traditional implant and abutment structures, the interface is mostly inverted cone shape, with poor sealing, and bacteria can easily enter the implant, causing problems such as bad breath. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a two-stage dental implant system which has no electrochemical corrosion effect, no metal allergy, low incidence of peri-implantitis, no peculiar smell and high strength.

[0006] The utility model discloses a two-stage dental implant system, comprising a dental implant and an abutment, both of which are made of ceramic materials, the dental implant comprising an external anti-rotation structure, a positive conical sealing cone surface being arranged below the external anti-rotation structure, a root being arranged below the positive conical sealing cone surface, an external thread structure being arranged outside the root, an internal anti-rotation structure and an internal thread structure being arranged inside the dental implant, the internal anti-rotation structure and the internal thread structure extending to the inside of the root through the internal part of the external anti-rotation structure and the positive conical sealing cone surface. The abutment comprises a gingival part and a shoulder part, the interface diameter of the bottom interface position of the gingival part is the same as the root diameter, the bottom of the gingival part is processed with an inwardly facing abutment sealing cone surface, the taper of the abutment sealing cone surface is the same as the taper of the dental implant sealing cone surface, an anti-rotation groove identical to the external anti-rotation structure is arranged inside the bottom interface of the gingival part, an abutment screw channel is arranged inside the abutment, and the abutment screw fixes and connects the abutment and the dental implant.

[0007] The utility model discloses a two-stage dental implant system, wherein the ceramic material is one of zirconium oxide, alumina toughened zirconium oxide or zirconium oxide toughened alumina.

[0008] The utility model discloses a two-stage dental implant system, wherein the outer anti-rotation structure and the anti-rotation groove have the same structure, and are one of the structures of a straight line, a cross, a triangle, a triangular plum blossom, a square, a hexagon, a hexagonal plum blossom, an octagon or an octagonal plum blossom; the inner anti-rotation structure is one of the structures of a straight line, a cross, a triangle, a triangular plum blossom, a square, a hexagon, a hexagonal plum blossom, an octagon or an octagonal plum blossom.

[0009] The utility model two-stage dental implant system, wherein the diameter of the circumscribed circle of the inner anti-rotation structure is The outer diameter of the internal thread structure does not exceed that of the dental implant, which ensures the implant wall thickness to the maximum extent, thus improving the implant's torsion resistance during surgical implantation and the implant's compression resistance when chewing food.

[0010] The utility model discloses a two-stage dental implant system, wherein the root diameter of the root is The root length is 6.0 to 16.0 mm, and the external thread structure outside the root is treated with sandblasting and acid etching, with a roughness of 1.0 to 3.0.

[0011] The utility model discloses a two-stage dental implant system, wherein the gingival penetration part is in a tapered structure which is wide at the top and narrow at the bottom, and the diameter of the base at the widest part of the upper part of the gingival penetration part is slightly larger than the root diameter.

[0012] The utility model discloses a two-stage dental implant system, wherein the inner anti-rotation structure and the inner thread structure extend to the inside of the root through the outer anti-rotation structure and the inside of the positive conical sealing cone surface.

[0013] The utility model discloses a two-stage dental implant system, wherein the diameter of the inscribed circle of the external anti-rotation structure is the same as the diameter of the inscribed circle of the anti-rotation groove. The length of the external anti-rotation structure is 1.5 to 3.0 mm, which ensures that the dental implant 11 and the base 12 have sufficient anti-torsion performance after being assembled, and can withstand a torsional force of ≥70N·cm when the teeth chew food.

[0014] The utility model discloses a two-stage dental implant system, wherein the taper of the dental implant sealing cone surface of the positive conical sealing cone surface and the taper of the base sealing cone surface are 90° to 170°.

[0015] The utility model provides a two-stage dental implant system, wherein the interface diameter at the bottom interface position of the gingival penetration part is equal to the root diameter. The length of the gingival penetration site is 1.0 to 5.0 mm, and the shoulder height is 4.0 to 6.0 mm.

[0016] The difference between the two-stage dental implant system of the utility model and the prior art is that the two-stage dental implant system of the utility model adopts ceramic materials, which will not produce potential difference and electrochemical corrosion effect. The biological safety of ceramic materials avoids the problem of patients being allergic to metal materials. Ceramic materials are closer to the color of natural teeth, which can solve the problem of insufficient aesthetics of metal implants and abutments.

[0017] The dental implant sealing surface of the two-stage dental implant system of the utility model adopts a positive cone structure design, which effectively prevents bacteria from entering the implant and also improves the compression resistance of the implant. The dental implant adopts an external anti-rotation structure design, and an internal anti-rotation structure is provided inside the implant. Its maximum circumscribed circle does not exceed the outer diameter of the implant thread, which maximizes the implant wall thickness, improves the implant's torsion resistance during surgical implantation, and also improves the implant's compression resistance when chewing food.

[0018] The two-stage dental implant system of the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the two-stage dental implant system of the utility model;

[0020] Figure 2 It is a top view of the two-stage dental implant system of the utility model;

[0021] Figure 3 It is an axonometric view of the two-stage dental implant system of the utility model;

[0022] Figure 4 It is a front view of the abutment in the two-stage dental implant system of the utility model;

[0023] Figure 5 It is a top view of the abutment in the two-stage dental implant system of the utility model;

[0024] Figure 6 It is an axonometric view of the abutment in the two-stage dental implant system of the utility model;

[0025] Figure 7 This is a diagram of the use status of the two-stage dental implant system of the utility model;

[0026] The markings in the figure are as follows: 1-external anti-rotation structure; 2-positive conical sealing cone surface; 3-root; 4-external thread structure; 5-internal anti-rotation structure; 6-internal thread structure; 7-transgingival part; 8-shoulder part; 9-anti-rotation groove; 10-screw channel; 11-dental implant; 12-abutment; 13-abutment screw; A-inscribed circle of external anti-rotation structure; B-length of external anti-rotation structure; C-taper of dental implant sealing cone surface; D-root diameter; E-root length; F-external anti-rotation structure circumscribed circle; G-taper of abutment sealing cone surface; H-interface diameter; I-transgingival part length; J-abutment diameter; K-shoulder height; L-inscribed circle of anti-rotation groove. DETAILED DESCRIPTION

[0027] The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0028] Example 1

[0029] like Figure 7 As shown, the two-stage dental implant system of the present invention comprises a dental implant 11 and a base 12, both of which are made of ceramic material. The ceramic material is zirconium oxide (Zr) which is made by injection molding / machining, and then sintering, heating, etc.

[0030] like Figure 1-Figure 3 As shown, the dental implant 11 includes an external anti-rotation structure 1, a sealing cone surface 2 and a root 3 from top to bottom.

[0031] The outer anti-rotation structure 1 is a straight structure. A through hole is provided inside the outer anti-rotation structure 1. The diameter of the inscribed circle A of the outer anti-rotation structure is The length B of the external anti-rotation structure is 1.5 mm, which ensures that the dental implant 11 has sufficient anti-torsion performance after being assembled with the base 12. When the teeth chew food, they can withstand a torsional force of 70 N·cm.

[0032] The positive conical sealing cone surface 2 is located below the external anti-rotation structure 1, and the top surface of the positive conical sealing cone surface 2 is connected to the bottom surface of the external anti-rotation structure 1. The dental implant sealing cone surface taper C of the positive conical sealing cone surface 2 is 90°.

[0033] The root 3 is located below the positive conical sealing cone surface 2 and is connected to the bottom surface of the positive conical sealing cone surface 2. The root diameter D is The root length E is 6.0 mm. The root 3 is provided with an external thread structure 4 on the outside, which is treated by sandblasting and acid etching. The roughness Ra is 1.0.

[0034] The dental implant 11 is provided with an internal anti-rotation structure 5 and an internal thread structure 6, which extend to the inside of the root 3 through the external anti-rotation structure 1 and the inside of the positive conical sealing cone 2. The internal anti-rotation structure can be a straight line, a cross, a triangle, a triangular plum blossom, a square, a hexagon, a hexagonal plum blossom, an octagon or an octagonal plum blossom structure. The diameter of the circumscribed circle F of the internal anti-rotation structure is The outer diameter of the internal thread structure 6 of the dental implant 11 is not exceeded, so the implant wall thickness is guaranteed to the maximum extent, which not only improves the torsion resistance of the implant during surgical implantation, but also improves the compression resistance of the implant when chewing food.

[0035] like Figure 4-Figure 6 As shown, the abutment 12 includes a gingival portion 7 and a shoulder portion 8. The gingival portion 7 is generally a tapered structure that is wide at the top and narrow at the bottom. The abutment diameter J at the widest part of the upper portion is Slightly larger than the root diameter D. The interface diameter H at the bottom interface position of the gingival penetration part 7 is The same as the root diameter D; the bottom of the gingival part 7 is processed with an inward base sealing cone surface, and the taper G of the base sealing cone surface is 90°, which is the same as the taper C of the dental implant sealing cone surface. Through the coordination of the above two dimensions, the gingival part 7 can be tightly fitted with the positive conical sealing cone surface 2 and the root 3 to form a good sealing structure, ensuring that saliva or bacteria cannot naturally flow into the dental implant 11, preventing the generation of bad breath in the mouth. An anti-rotation groove 9 is provided on the inner side of the bottom interface of the gingival part 7. The structure of the anti-rotation groove 9 is the same as the external anti-rotation structure 1, which is convenient for installation with the external anti-rotation structure 1. The diameter of the inscribed circle L of the anti-rotation groove is The diameter of the inner circle A of the external anti-rotation structure is the same, so as to ensure that the base 12 has sufficient anti-torsion and anti-compression performance. The length I of the gingival part is 1.0 mm, and the height K of the shoulder is 4.0 mm.

[0036] The interior of the abutment 12 is provided with an abutment screw channel 10, which passes through the gingival part 7 and the shoulder part 8. The abutment screw 13 passes through the abutment 12 to fix the abutment 12 and the dental implant 11. The abutment screw 13 can be made of PEEK, carbon fiber, tantalum metal, pure titanium or titanium alloy by machining / injection molding / winding.

[0037] Example 2

[0038] like Figure 1 As shown, the two-stage dental implant system of the present invention comprises a dental implant 11 and a base 12, both of which are made of ceramic material. The ceramic material is alumina toughened zirconia (ATZ) which is made by injection molding / machining, and then sintering, heating, etc.

[0039] The dental implant 11 comprises an external anti-rotation structure 1 , a sealing cone surface 2 and a root 3 in sequence from top to bottom.

[0040] The outer anti-rotation structure 1 is a cross structure. A through hole is provided inside the outer anti-rotation structure 1. The diameter of the inscribed circle A of the outer anti-rotation structure is The length B of the external anti-rotation structure is 2.5 mm, which ensures that the dental implant 11 has sufficient anti-torsion performance after being assembled with the base 12. When the teeth chew food, they can withstand a torsional force of 80 N·cm.

[0041] The positive conical sealing cone surface 2 is located below the external anti-rotation structure 1, and the top surface of the positive conical sealing cone surface 2 is connected to the bottom surface of the external anti-rotation structure 1. The taper C of the dental implant sealing cone surface of the positive conical sealing cone surface 2 is 130°.

[0042] The root 3 is located below the positive conical sealing cone surface 2 and is connected to the bottom surface of the positive conical sealing cone surface 2. The root diameter D is The root length E is 10.0 mm. The root 3 is provided with an external thread structure 4 on the outside, which is treated by sandblasting and acid etching. The roughness Ra is 2.0.

[0043] The dental implant 11 is provided with an internal anti-rotation structure 5 and an internal thread structure 6, which extend to the inside of the root 3 through the external anti-rotation structure 1 and the inside of the positive conical sealing cone 2. The internal anti-rotation structure can be a straight line, a cross, a triangle, a triangular plum blossom, a square, a hexagon, a hexagonal plum blossom, an octagon or an octagonal plum blossom structure. The diameter of the circumscribed circle F of the internal anti-rotation structure is The outer diameter of the internal thread structure 6 of the dental implant 11 is not exceeded, so the implant wall thickness is guaranteed to the maximum extent, which not only improves the torsion resistance of the implant during surgical implantation, but also improves the compression resistance of the implant when chewing food.

[0044] The abutment 12 includes a gingival part 7 and a shoulder part 8. The gingival part 7 is a tapered structure that is wide at the top and narrow at the bottom. The diameter of the abutment at the widest part of the top is Slightly larger than the root diameter D. The interface diameter H at the bottom interface position of the gingival penetration part 7 is The same as the root diameter D; the bottom of the gingival part 7 is processed with an inward base sealing cone surface, and the taper G of the base sealing cone surface is 130°, which is the same as the taper C of the dental implant sealing cone surface. Through the coordination of the above two dimensions, the gingival part 7 can be tightly fitted with the positive conical sealing cone surface 2 and the root 3 to form a good sealing structure, ensuring that saliva or bacteria cannot naturally flow into the dental implant 11, preventing the generation of bad breath in the mouth. An anti-rotation groove 9 is provided on the inner side of the bottom interface of the gingival part 7. The structure of the anti-rotation groove 9 is the same as the external anti-rotation structure 1, which is convenient for installation with the external anti-rotation structure 1. The diameter of the inscribed circle L of the anti-rotation groove is The diameter of the inner circle A of the external anti-rotation structure is the same, ensuring that the base 12 has sufficient anti-torsion and anti-compression performance. The length I of the gingival part is 3.0 mm, and the height K of the shoulder is 5.0 mm.

[0045] The interior of the abutment 12 is provided with an abutment screw channel 10, which passes through the gingival part 7 and the shoulder part 8. The abutment screw 13 passes through the abutment 12 to fix the abutment 12 and the dental implant 11. The abutment screw 13 can be made of PEEK, carbon fiber, tantalum metal, pure titanium or titanium alloy by machining / injection molding / winding.

[0046] Example 3

[0047] like Figure 1 As shown, the two-stage dental implant system of the present invention comprises a dental implant 11 and a base 12, both of which are made of ceramic material. The ceramic material is zirconium oxide toughened alumina (ZTA) which is made by injection molding / machining, and then sintering, heating, etc.

[0048] The dental implant 11 comprises an external anti-rotation structure 1 , a sealing cone surface 2 and a root 3 from top to bottom.

[0049] The external anti-rotation structure 1 is a triangular structure. In other embodiments, it can also be a triangular plum blossom, a square, a hexagon, a hexagonal plum blossom, an octagon or an octagonal plum blossom. The external anti-rotation structure 1 is provided with a through hole. The diameter of the inscribed circle A of the external anti-rotation structure is The length B of the external anti-rotation structure is 3.0 mm, which ensures that the dental implant 11 has sufficient anti-torsion performance after being assembled with the base 12. When the teeth chew food, they can withstand a torsional force of 90 N·cm.

[0050] The positive conical sealing cone surface 2 is located below the external anti-rotation structure 1, and the top surface of the positive conical sealing cone surface 2 is connected to the bottom surface of the external anti-rotation structure 1. The taper C of the dental implant sealing cone surface of the positive conical sealing cone surface 2 is 170°.

[0051] The root 3 is located below the positive conical sealing cone surface 2 and is connected to the bottom surface of the positive conical sealing cone surface 2. The root diameter D is The root length E is 16.0 mm. The root 3 is provided with an external thread structure 4 on the outside, which is treated by sandblasting and acid etching. The roughness Ra is 3.0.

[0052] The dental implant 11 is provided with an internal anti-rotation structure 5 and an internal thread structure 6, which extend to the inside of the root 3 through the external anti-rotation structure 1 and the inside of the positive conical sealing cone 2. The internal anti-rotation structure can be a straight line, a cross, a triangle, a triangular plum blossom, a square, a hexagon, a hexagonal plum blossom, an octagon or an octagonal plum blossom structure. The diameter of the circumscribed circle F of the internal anti-rotation structure is The outer diameter of the internal thread structure 6 of the dental implant 11 is not exceeded, so the implant wall thickness is guaranteed to the maximum extent, which not only improves the torsion resistance of the implant during surgical implantation, but also improves the compression resistance of the implant when chewing food.

[0053] The abutment 12 includes a gingival part 7 and a shoulder part 8. The gingival part 7 is a tapered structure that is wide at the top and narrow at the bottom. The diameter of the abutment at the widest part of the top is Slightly larger than the root diameter D. The interface diameter H at the bottom interface position of the gingival penetration part 7 is The same as the root diameter D; the bottom of the gingival part 7 is processed with an inward base sealing cone surface, and the taper G of the base sealing cone surface is 170°, which is the same as the taper C of the dental implant sealing cone surface. Through the coordination of the above two dimensions, the gingival part 7 can be tightly fitted with the positive conical sealing cone surface 2 and the root 3 to form a good sealing structure, ensuring that saliva or bacteria cannot naturally flow into the dental implant 11, preventing the generation of bad breath in the mouth. An anti-rotation groove 9 is provided on the inner side of the bottom interface of the gingival part 7. The structure of the anti-rotation groove 9 is the same as the external anti-rotation structure 1, which is convenient for installation with the external anti-rotation structure 1. The diameter of the inscribed circle L of the anti-rotation groove is The diameter of the inner circle A of the external anti-rotation structure is the same, so as to ensure that the base 12 has sufficient anti-torsion and anti-compression performance. The length I of the gingival part is 5.0 mm, and the height K of the shoulder is 6.0 mm.

[0054] The interior of the abutment 12 is provided with an abutment screw channel 10, which passes through the gingival part 7 and the shoulder part 8. The abutment screw 13 passes through the abutment 12 to fix the abutment 12 and the dental implant 11. The abutment screw 13 can be made of PEEK, carbon fiber, tantalum metal, pure titanium or titanium alloy by machining / injection molding / winding.

[0055] The two-stage dental implant system of the utility model adopts ceramic materials, which will not produce potential difference and electrochemical corrosion effect. The biological safety of ceramic materials avoids the problem of patients being allergic to metal materials. Ceramic materials are closer to the color of natural teeth, which can solve the problem of insufficient aesthetics of metal implants and abutments.

[0056] The dental implant sealing surface of the two-stage dental implant system of the utility model adopts a positive cone structure design, which effectively prevents bacteria from entering the implant and also improves the compression resistance of the implant. The dental implant adopts an external anti-rotation structure design, and an internal anti-rotation structure is provided inside the implant. Its maximum circumscribed circle does not exceed the outer diameter of the implant thread, which maximizes the implant wall thickness, improves the implant's torsion resistance during surgical implantation, and also improves the implant's compression resistance when chewing food.

[0057] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A two-stage dental implant system, characterized in that: The invention comprises a dental implant and an abutment, both of which are made of ceramic materials. The dental implant comprises an external anti-rotation structure, a positive conical sealing cone surface is arranged below the external anti-rotation structure, a root is arranged below the positive conical sealing cone surface, an external thread structure is arranged outside the root, an internal anti-rotation structure and an internal thread structure are arranged inside the dental implant, the abutment comprises a transgingival part and a shoulder part, an interface diameter of the bottom interface position of the transgingival part is the same as the root diameter, an inward-facing abutment sealing cone surface is processed at the bottom of the transgingival part, the taper of the abutment sealing cone surface is the same as the taper of the dental implant sealing cone surface, an anti-rotation groove the same as the external anti-rotation structure is arranged on the inner side of the bottom interface of the transgingival part, an abutment screw channel is arranged inside the abutment, and the abutment screw fixes the abutment and the dental implant.

2. The two-stage dental implant system according to claim 1, characterized in that: The ceramic material is one of zirconia, alumina-toughened zirconia or zirconia-toughened alumina.

3. The two-stage dental implant system according to claim 1, characterized in that: The outer anti-rotation structure is consistent with the structure of the anti-rotation groove, and is one of the structures of a straight line, a cross, a triangle, a triangular plum blossom, a square, a hexagon, a hexagonal plum blossom, an octagon or an octagonal plum blossom; the inner anti-rotation structure is one of the structures of a straight line, a cross, a triangle, a triangular plum blossom, a square, a hexagon, a hexagonal plum blossom, an octagon or an octagonal plum blossom.

4. The two-stage dental implant system according to claim 1, characterized in that: The diameter of the circumscribed circle of the internal anti-rotation structure does not exceed the outer diameter of the internal thread structure of the dental implant.

5. The two-stage dental implant system according to claim 1, characterized in that: The root diameter of the root is The root length is 6.0 to 16.0 mm, and the external thread structure roughness outside the root is 1.0 to 3.

0.

6. The two-stage dental implant system according to claim 1, characterized in that: The gingival penetration part is in a conical structure that is wide at the top and narrow at the bottom, and the diameter of the base at the widest part of the upper part of the gingival penetration part is slightly larger than the root diameter.

7. The two-stage dental implant system according to claim 1, characterized in that: The internal anti-rotation structure and the internal thread structure extend to the inside of the root through the internal part of the external anti-rotation structure and the positive conical sealing cone surface.

8. The two-stage dental implant system according to claim 1, characterized in that: The diameter of the inscribed circle of the external anti-rotation structure is the same as the diameter of the inscribed circle of the anti-rotation groove, which is The length of the external anti-rotation structure is 1.5 to 3.0 mm.

9. The two-stage dental implant system according to claim 1, characterized in that: The taper of the dental implant sealing cone surface and the taper of the base sealing cone surface of the positive conical sealing cone surface are 90° to 170°.

10. The two-stage dental implant system according to claim 1, characterized in that: The interface diameter and root diameter of the bottom interface position of the gingival penetration part are The length of the gingival penetration site is 1.0 to 5.0 mm, and the shoulder height is 4.0 to 6.0 mm.

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