CN120616819A - Artificial tooth implant - Google Patents
Artificial tooth implantInfo
- Publication number
- CN120616819A CN120616819A CN202510862243.4A CN202510862243A CN120616819A CN 120616819 A CN120616819 A CN 120616819A CN 202510862243 A CN202510862243 A CN 202510862243A CN 120616819 A CN120616819 A CN 120616819A
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- China
- Prior art keywords
- artificial tooth
- tooth root
- opening
- implant according
- artificial
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Abstract
本发明涉及种植牙技术领域，包括人工牙根，人工牙根的外表面具有外螺纹，人工牙根的顶端向内开设有基台槽，基台槽的内底面开设有安装腔，安装腔的内壁开设有与外部相通的贯穿口，贯穿口内活动设有定位尖刺，定位尖刺用于向外伸出以插入牙槽骨内；外螺纹上开设有与贯穿口相对应的断开口，贯穿口位于相应的断开口内侧。本发明中具有定位尖刺，定位尖刺能够横向插入牙槽骨内，从而阻止人工牙根因咀嚼扭力而产生松动，有助于提高种植体的稳定性和可靠性。
The present invention relates to the field of dental implant technology, comprising an artificial tooth root, wherein the outer surface of the artificial tooth root has an external thread, the top of the artificial tooth root is provided with an abutment groove inwardly, the inner bottom surface of the abutment groove is provided with an installation cavity, the inner wall of the installation cavity is provided with a through opening communicating with the outside, a positioning spike is movably provided in the through opening, the positioning spike is used to extend outward to be inserted into the alveolar bone; a disconnection opening corresponding to the through opening is provided on the external thread, and the through opening is located inside the corresponding disconnection opening. The present invention has a positioning spike, which can be inserted laterally into the alveolar bone, thereby preventing the artificial tooth root from loosening due to chewing torque, thereby helping to improve the stability and reliability of the implant.
Description
Technical Field
The invention relates to the technical field of dental implants, in particular to an artificial dental implant.
Background
In the field of dental implant restoration, an artificial dental implant is used as a key component for replacing a natural tooth root, and is combined with bone tissue by being implanted into an alveolar bone, so that a stable support is provided for a dental crown. At present, the existing artificial tooth implant generally adopts titanium alloy, pure titanium or biological ceramic and other materials, and promotes osseointegration through a thread structure.
However, as the use time of the implant increases, the problem of loosening of the implant becomes remarkable, seriously affecting the long-term stability and the service life of the implant. On one hand, due to the long-term effect of chewing force, the difference of bone conditions of patients, periodontal diseases and the like, the interface between the implant and bone tissue can be micro-moved, so that the activity of osteoclast is enhanced, bone loss in a bone bonding area is caused, and the mechanical jogging and biological bonding force between the implant and alveolar bone are reduced.
On the other hand, since the outer surface of the implant is provided with the external thread, when the implant is implanted, the implant is also implanted into the reserved hole on the alveolar bone in a screwing mode, when a patient chews hard food, the implant crown is often subjected to certain torsion, and the torsion is transmitted to the implant, so that the implant can be reversely rotated to generate looseness.
The above problems not only reduce the success rate of dental implant restoration, but also may lead to the suffering and economic burden of the patient to bear the secondary operation, and in view of this, we propose an artificial dental implant to well solve the above drawbacks.
Disclosure of Invention
The present invention is directed to an artificial dental implant for solving the problems set forth in the background art described above.
The invention is realized by the following technical scheme that the artificial tooth implant comprises an artificial tooth root, wherein the outer surface of the artificial tooth root is provided with external threads, the top end of the artificial tooth root is internally provided with a base groove, the inner bottom surface of the base groove is provided with an installation cavity, the inner wall of the installation cavity is provided with a through hole communicated with the outside, the through hole is movably provided with a positioning spike, and the positioning spike is used for extending outwards to be inserted into an alveolar bone;
The external thread is provided with a break-off opening corresponding to the through opening, and the through opening is positioned at the inner side of the corresponding break-off opening.
Optionally, the number of the through holes is four, the four through holes are located at different axial heights of the artificial tooth root, and the included angle between the centers of the two adjacent through holes is 90 degrees.
Optionally, the number of the through holes is three, the three through holes are located at different axial heights of the artificial tooth root, and the included angle between the centers of the two adjacent through holes is 120 degrees.
Optionally, the axial direction of the through-hole is perpendicular to the axial direction of the artificial tooth root.
Optionally, the artificial tooth root is in a conical structure with a wide upper part and a narrow lower part, and the axial direction of the through hole is perpendicular to a generatrix of the outer surface of the artificial tooth root.
Optionally, the location spike is the two-section structure of constituteing by cylinder section and needle body section, the diameter looks adaptation of cylinder section and through-hole, the diameter of needle body section is less than the diameter of cylinder section, and the front end of needle body section is sharp-pointed.
Optionally, the surface of cylinder section has seted up the helicla flute, the inner wall of through-hole is equipped with the bulge, the bulge activity embedding is in the helicla flute.
Optionally, a rotating part is rotatably arranged at one end of the cylindrical section opposite to the needle section.
Optionally, the inside fixed bonding of through-hole has the shutoff ring, the inner circle of shutoff ring supplies the needle section to pass, the surface of shutoff ring is parallel and level with the surface of artifical tooth root.
Optionally, the inside activity of installation cavity has inserted the shutoff post, when cylinder section and corresponding shutoff ring butt, rotation part and shutoff post butt.
Compared with the prior art, the invention provides an artificial tooth implant, which has the following beneficial effects:
1. The invention has the positioning spike, and the positioning spike can be transversely inserted into the alveolar bone, thereby preventing the artificial tooth root from loosening due to chewing torsion and being beneficial to improving the stability and reliability of the implant;
2. The number of the positioning spines is multiple, the orientation of the positioning spines is different, and the heights of the positioning spines are also different, so that the stability of the implant can be further improved;
3. The positioning spike can be stretched out while rotating in the outward stretching process, and the instant extrusion force can be reduced in the rotating screwing process, so that the defect that the alveolar bone is damaged due to overlarge stress caused by direct insertion is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a sectional view of the invention in an initial state;
FIG. 3 is a cross-sectional view of another embodiment of the present invention;
FIG. 4 is a front view of the present invention;
FIG. 5 is a schematic view of a positioning spike structure of the present invention;
Fig. 6 is an enlarged corresponding diagram at a in fig. 2.
In the figure, 100 parts of artificial tooth root, 101 parts of external thread, 102 parts of base groove, 103 parts of installation cavity, 104 parts of through hole, 105 parts of break-off port, 106 parts of protruding block, 107 parts of plugging ring, 200 parts of locating spike, 201 parts of cylindrical section, 202 parts of needle body, 203 parts of spiral groove, 204 parts of rotating part, 300 parts of plugging column.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the existing oral implant technology, although the external thread structure can realize initial mechanical retention through a screwing-in mode, under the action of long-term load, micro friction is easy to generate at the contact interface of the thread and the bone tissue. Under the influence of the direction change of the chewing force and the occlusion impact, the shearing stress between the implant and the bone interface can cause bone absorption at the edge of the thread, so that the peripheral gap of the implant is enlarged. When the implant is subjected to lateral torsion force, the thread structure of the implant cannot form an effective anti-rotation locking mechanism, so that the binding force of the bone-in-bone interface to the implant is gradually lost, and the peri-implant bone-in-bone failure is finally initiated.
For example, in the case of mandibular molar area restoration using a titanium alloy externally threaded implant, the implant produces micro-displacements of over 50 μm at the thread and bone tissue interface when subjected to cyclic side loads due to the strong chewing muscle force of the patient and the presence of occlusal interference. This micro-motion promotes osteoclast activation, resulting in local bone resorption lacunae around the thread crest, leading to reduced axial stability of the implant. When the patient eats hard food and generates instant torque, the implant abutment connecting part generates a reverse rotation trend, and the traditional continuous thread structure cannot form effective blocking in the rotation direction, so that the implant is gradually loosened.
If the above problems are not solved, the bone-joining interface will enter the vicious circle due to the continuous micro-motion, accelerating the peripheral bone loss of the implant. When the bone resorption exceeds the effective depth of engagement of the threads, the implant will lose mechanical retention, ultimately leading to failure of the prosthesis function. This condition not only causes irreversible damage to the implant support structure, but also causes secondary risk of infection, forcing the patient to undergo secondary operations such as implant extraction and bone augmentation, significantly increasing the treatment cost and cycle.
In facing the above problems, the present application first considers how to enhance the anti-rotation capability of an implant without significantly increasing the implantation trauma. Traditional screw thread reinforcement schemes can increase implant diameter, resulting in increased bone loss during hole preparation. In order to solve the problems, the application provides the following technical scheme:
referring to fig. 1-6, an embodiment of the present application provides an artificial dental implant, which includes an artificial tooth root 100, an external thread 101 is provided on an outer surface of the artificial tooth root 100, a abutment groove 102 is provided on an inner top end of the artificial tooth root 100, a mounting cavity 103 is provided on an inner bottom surface of the abutment groove 102, a through hole 104 is provided on an inner wall of the mounting cavity 103 and is communicated with an outside, a positioning spike 200 is movably provided in the through hole 104, the positioning spike 200 is used for extending outwards to insert into an alveolar bone, the positioning spike 200 can be made of metal or biological ceramic material, and a length thereof can be adjusted according to an alveolar bone depth. The diameter of the through-penetration 104 is slightly larger than the diameter of the positioning spike 200 to allow the positioning spike 200 to slide within the through-penetration 104.
Further, the male screw 101 is provided with a break opening 105 corresponding to the through opening 104, and the through opening 104 is located inside the corresponding break opening 105. Therefore, the positioning spike 200 does not hinder the screwing action of the artificial tooth root 100 during the screwing of the artificial tooth root 100 into the alveolar bone.
This solution can provide additional mechanical fixation after implant implantation by providing a retractable positioning spike 200 inside the implant. The extended positioning spike 200 is effective to prevent the implant from rotating in the opposite direction when the implant is subjected to a rotational force. Compared with the traditional implant which is fixed only by threads, the design obviously improves the stability of the implant in long-term use, and is particularly suitable for patients with poor bone conditions.
In some embodiments of the present application, the number of through-holes 104 is four, and the four through-holes 104 are located at different axial heights of the artificial tooth root 100, and the included angle between the centers of two adjacent through-holes 104 is 90 °. In another embodiment, the number of the through openings 104 is three, and the three through openings 104 are located at different axial heights of the artificial tooth root 100, and the included angle between the centers of two adjacent through openings 104 is 120 °. The placement of the through-openings 104 at axially different heights of the artificial root 100 enables the locating spike 200 to extend outwardly from multiple height positions, thereby forming a multi-level fixation point within the alveolar bone. The center included angle of 90 degrees or 120 degrees between the adjacent through holes 104 is designed, so that the through holes 104 are uniformly distributed in the circumferential direction, and the stress balance in all directions is ensured.
In addition, the axial direction of the through-hole 104 is perpendicular to the axial direction of the artificial tooth root 100. That is, the positioning spike 200 can be pierced horizontally outward while the artificial tooth root 100 is kept vertical. According to the technical scheme, through the structure of the through openings 104 with a plurality of orthogonal layout, the positioning spike 200 can extend out along a radial straight line. When the artificial tooth root 100 is implanted into the alveolar bone, the positioning spike 200 is driven by an external force to penetrate into the surrounding bone tissue in a direction perpendicular to the axis of the tooth root, thereby forming a multidirectional mechanical anchor.
In another embodiment of the present application, the artificial tooth root 100 has a tapered structure with a wide upper part and a narrow lower part, and the axial direction of the through hole 104 is perpendicular to the generatrix of the outer surface of the artificial tooth root 100. That is, the positioning spike 200 can be pierced obliquely downward when the artificial tooth root 100 is kept upright.
In some embodiments of the present application, the positioning spike 200 is a two-stage structure comprising a cylindrical section 201 and a needle section 202, the diameter of the cylindrical section 201 and the diameter of the through-hole 104 are adapted, the diameter of the needle section 202 is smaller than the diameter of the cylindrical section 201, and the front end of the needle section 202 is sharp.
In another embodiment, the surface of the cylindrical section 201 is provided with a spiral groove 203, the inner wall of the through hole 104 is provided with a protruding block 106, and the protruding block 106 is movably embedded in the spiral groove 203. It should be noted that, one end of the spiral groove 203 is flush with the tail end of the cylindrical section 201, and the other end of the spiral groove 203 has a gap with the front end surface of the cylindrical section 201, so when the positioning spike 200 is assembled, the positioning spike 200 needs to be inserted into the through hole 104 from outside to inside.
The mating design of the helical groove 203 and the protruding block 106 enables the positioning spike 200 to move along the trajectory of the helical groove during rotation, thereby enabling extension or retraction of the needle segment 202. In the piercing operation of the positioning spike 200, the positioning spike can be rotated and extended, and the instantaneous pressing force can be reduced during the screwing process, so that the risk of damaging the alveolar bone due to excessive stress caused by direct insertion can be reduced.
In addition, the end of the cylindrical section 201 facing away from the needle section 202 is rotatably provided with a rotation part 204. A plugging ring 107 is fixedly adhered to the inside of the through hole 104, the inner ring of the plugging ring 107 is used for the needle section 202 to pass through, and the outer surface of the plugging ring 107 is flush with the outer surface of the artificial tooth root 100. The plugging ring 107 has an annular shape with an inner diameter smaller than the diameter of the cylindrical section 201 for preventing the cylindrical section 201 from protruding to the outside. In addition, the sealing ring 107 is bonded in the through-hole 104 by epoxy glue.
In this embodiment, in a specific application, a worker grips the rotating portion 204 with forceps or other tools, and then applies a pushing force to the rotating portion 204 toward the through-hole 104, so that the positioning spike 200 protrudes outward. Specifically, the rotating part 204 can be clamped by forceps, then one side of the forceps is abutted against the top end of the mounting cavity 103 to form a fulcrum, and finally the handle end of the forceps is pushed reversely, so that the positioning spike 200 is pushed by the lever principle.
The inside activity of installation cavity 103 inserts the shutoff post 300, and when cylinder section 201 and corresponding shutoff ring 107 butt, rotation part 203 and shutoff post 300 butt, the shutoff post 300 can adopt medical grade titanium alloy or biological ceramic material to make, and the length of shutoff post 300 is the same with the degree of depth of installation cavity 103, and after the shutoff post 300 inserts installation cavity 103 completely, screw in the base station again, then the base station bottom can with the top butt of shutoff post 300 to fixed shutoff post 300.
According to the technical scheme, the movable blocking column 300 is arranged, so that a double limiting structure is formed when the positioning spike 200 is completely unfolded. Specifically, as the cylindrical section 201 moves outwardly into contact with the occlusion ring 107, the rotating portion 203 also abuts the occlusion post 300. The reaction force thus created is effective to prevent the positioning spike 200 from retracting when subjected to a force. At the same time, the removable insert design of the blocking post 300 allows to maintain the adjustability of the inner space of the mounting cavity 103 in the non-operative state. Compared with the prior art, the axial stability of the positioning spike 200 is remarkably improved, and torsion transmission generated in the chewing process can be better resisted, so that the risk of loosening the implant is reduced.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510862243.4A CN120616819A (en) | 2025-06-25 | 2025-06-25 | Artificial tooth implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510862243.4A CN120616819A (en) | 2025-06-25 | 2025-06-25 | Artificial tooth implant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN120616819A true CN120616819A (en) | 2025-09-12 |
Family
ID=96958334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202510862243.4A Pending CN120616819A (en) | 2025-06-25 | 2025-06-25 | Artificial tooth implant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN120616819A (en) |
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2025
- 2025-06-25 CN CN202510862243.4A patent/CN120616819A/en active Pending
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