Implant thread with new form

Abstract

The invention provides an implant thread in a new form. The implant thread comprises a body main body; threads are arranged on the outer wall of the body part main body; the upper end and the lower end of the body part main body are respectively a neck part and a root part; the thread inclination angle of one end of the neck part is larger than that of the root part, a relatively small R angle R2 is connected with the bottom of the tooth bottom, the thread inclination angle of one end of the root part is smaller than that of the neck part, and a relatively large R angle R1 is connected with the bottom of the tooth bottom; a straight line or an oblique line is formed between the top of the crest of the thread; the invention provides a novel implant thread form, more uniform stress distribution is realized by changing the inclination angle of the thread, the size of the R angle and the design of the top of the thread, the initial stability and the implantation torque of the implant are improved, safer and more reliable treatment choices are provided for patients, and the problems in the prior art are solved; and substantial progress is brought to the field of dental implants.

Description

Technical Field

[0001] The invention relates to the technical field of dental implant design and manufacturing, and in particular to a new form of implant thread. Background Art

[0002] This technology belongs to the field of dental implant design and manufacturing, and specifically relates to an improved thread morphology of the dental implant body. In the application of dental implants, the bonding strength and stability between the implant and bone tissue are crucial. A good thread morphology of the implant body helps to optimize the stress distribution at the implant-bone interface, which is crucial to ensure the initial stability and implantation torque of the implant, thereby affecting the long-term success rate of the implant.

[0003] Deficiencies of existing technology: 1. Stress concentration: Traditional thread morphology may cause excessive local stress concentration, especially at the thread tip or root, which may lead to excessive absorption of bone tissue around the implant or mechanical failure of the implant itself.

[0004] 2. Insufficient initial stability: Due to the design of the thread shape, it may not provide sufficient initial stability in some cases, affecting the success rate of the implant.

[0005] 3. Implantation torque limitation: Different thread shapes have different effects on implantation torque. Inappropriate thread shapes may limit the maximum safe implantation torque, thus affecting the surgical effect.

[0006] 4. Adaptability issues: Traditional thread forms may not be well adapted to all types of bone conditions. For conditions with low bone density, a more optimized thread design may be required to ensure the safety and effectiveness of the implant.

[0007] Therefore, the prior art has deficiencies and needs further improvement. Summary of the invention

[0008] In view of the problems existing in the prior art, the present invention provides a new form of implant thread.

[0009] To achieve the above object, the specific scheme of the present invention is as follows: The present invention provides a new type of implant thread, which is characterized by comprising: Body main body; The outer wall of the body is provided with threads; The upper end and the lower end of the body are respectively a neck and a root; The thread inclination angle of one end of the neck is larger than that of the root, and a relatively small R angle R2 is formed when it is connected to the bottom of the tooth; The thread inclination angle of one end of the root is smaller than that of the neck, and a relatively large R angle R1 is formed when it is connected to the bottom of the tooth bottom.

[0010] Furthermore, a straight line or an oblique line is formed between the top and bottom of the crest of the thread.

[0011] Furthermore, the length of the straight line or the oblique line is 0.05-0.25 mm.

[0012] Furthermore, the thread depth, i.e. the distance from the tooth top to the tooth bottom, is 0.4-0.6 mm.

[0013] Furthermore, the thread is a right-hand thread.

[0014] Furthermore, the angle between the flank of the thread facing the neck and the axial direction of the implant is smaller than the angle between the flank of the thread facing the root and the axial direction of the implant.

[0015] Furthermore, the outer diameter of the portion of the implant body provided with threads decreases gradually from top to bottom.

[0016] The technical solution of the present invention has the following beneficial effects: 1. Optimize stress distribution: Compared with the traditional thread form, the maximum principal stress and maximum von Mises equivalent stress of the new thread form are lower after three-dimensional finite element analysis. This indicates that the new thread can distribute stress more evenly, reduce local stress concentration, and help reduce the risk of mechanical failure of the implant during use.

[0017] 2. Improve initial stability: By adjusting the thread inclination and R angle, the new thread shape can better embed into the bone tissue and provide stronger initial stability; this is crucial to ensure the immediate fixation and long-term success rate of the implant after implantation.

[0018] 3. Enhanced implant torque: The optimized thread design not only improves initial stability, but also has a positive impact on implant torque; this means that doctors can apply greater torque during surgery without worrying about implant damage or displacement, thereby improving the safety and efficiency of the surgery.

[0019] 4. Adapt to various bone conditions: The design of the new thread form takes into account different types of bone conditions, especially for those with low bone density. Its design can provide better support and stability, increasing the application range and adaptability of the implant.

[0020] 5. Improve long-term safety: Because the new thread shape can achieve more uniform stress distribution and provide higher initial stability and implantation torque, these characteristics work together to significantly improve the safety of the implant in subsequent use, providing patients with a more reliable choice. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a stereogram of the present invention; Figure 2 It is a partial enlarged view of the present invention.

[0022] In the figure: 1. Neck; 2. Root; 3. Top of tooth; 4. Bottom of tooth; 5. Side of tooth. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; it can be understood that the specific embodiments described herein are only used to explain the present invention rather than to limit the present invention; it should also be noted that, for ease of description, only the parts related to the present invention rather than all are shown in the accompanying drawings.

[0024] Combination Figure 1-Figure 2 As shown, the present invention provides a new form of implant thread, including: Body main body; The outer wall of the body is provided with threads; The upper end and the lower end of the body are respectively a neck 1 and a root 2; The thread inclination angle of one end of the neck 1 is larger than that of the root 2, and is connected to the bottom of the tooth bottom 4 at a relatively small R angle R2; The thread inclination angle of one end of the root 2 is smaller than that of the neck 1, and a relatively large R angle R1 is formed when it is connected to the bottom of the tooth bottom 4.

[0025] A straight line or an oblique line is formed between the top of the thread crest 3 and the bottom of the thread crest.

[0026] The length of the straight line or oblique line is 0.05-0.25 mm.

[0027] The thread depth, i.e. the distance from the tooth top 3 to the tooth bottom 4, is 0.4-0.6 mm.

[0028] The thread is a right-hand thread.

[0029] The included angle between the flank 5 of the thread facing the neck 1 and the axial direction of the implant is smaller than the included angle between the flank 5 of the thread facing the root 2 and the axial direction of the implant.

[0030] The outer diameter of the portion of the implant body provided with threads decreases gradually from top to bottom.

[0031] Working principle: 1. Thread shape design: The new thread form has a larger thread inclination angle and a smaller R angle at the end near the implant neck 1, which helps to provide better fixation and stability in the early stage of implantation. The smaller R angle can increase the contact area between the thread and the bone tissue, thereby enhancing the initial embedding force.

[0032] The thread inclination angle at one end close to the root 2 is smaller and the thread connecting with the bottom has a larger R angle. This design reduces the stress concentration at the root 2 and prevents mechanical failure that may occur during long-term use.

[0033] 2. Stress distribution optimization: Three-dimensional finite element analysis verified that the maximum principal stress and maximum von Mises equivalent stress of the new thread shape were both lower, indicating that the design can distribute stress more evenly. Uniform stress distribution reduces the risk of local excessive stress, reduces the possibility of bone resorption, and improves the durability and safety of the implant.

[0034] 3.Threaded top design: The top of the thread is a straight line or oblique line of 0.05-0.25mm. This design not only helps to reduce the potential damage of the sharp edge of the thread top to the surrounding bone tissue, but also provides better guidance during the implantation process, ensuring that the thread can smoothly cut into the bone tissue without causing excessive damage.

[0035] 4.Thread depth control: The thread depth is set at 0.4-0.6mm, which ensures sufficient embedding force while avoiding excessive compression of bone tissue caused by excessive thread depth, maintaining the health of bone tissue and facilitating the osseointegration process around the implant.

[0036] 5. Enhanced adaptability: The design of the new thread form takes into account different types of bone conditions, especially for those with low bone density. Its optimized thread parameters can better adapt to these conditions, provide stronger support and stability, and expand the application range of implants.

[0037] In summary, the new implant thread morphology described in the present invention achieves optimal stress distribution by precisely adjusting key parameters such as thread inclination, R angle, thread top width and depth, thereby enhancing the initial stability and implantation torque of the implant, while also improving the applicability and long-term safety of the implant under various bone conditions. This improved design principle aims to improve the success rate of dental implant surgery and provide patients with safer and more reliable treatment options. The above is only a preferred embodiment of the present invention and does not limit the scope of the invention of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields under the inventive concept of the present invention are included in the protection scope of the present invention.

Claims

1. A new form of implant thread, characterized in that: include: Body main body; The outer wall of the body is provided with threads; The upper end and the lower end of the body are respectively a neck and a root; The thread inclination angle of one end of the neck is larger than that of the root, and a relatively small R angle R2 is formed when it is connected to the bottom of the tooth; The thread inclination angle of one end of the root is smaller than that of the neck, and a relatively large R angle R1 is formed when it is connected to the bottom of the tooth bottom.

2. The new implant thread according to claim 1, characterized in that: There is a straight line or an oblique line between the top of the thread crest and the bottom.

3. The new form of implant thread according to claim 2, characterized in that: The length of the straight line or oblique line is 0.05-0.25 mm.

4. The new implant thread according to claim 1, characterized in that: The thread depth, i.e. the distance from the top of the thread to the bottom of the thread, is 0.4-0.6 mm.

5. The new form of implant thread according to claim 1, characterized in that: The thread is a right-hand thread.

6. The new form of implant thread according to claim 1, characterized in that: The angle between the tooth flank of the thread facing the neck and the axial direction of the implant is smaller than the angle between the tooth flank of the thread facing the root and the axial direction of the implant.

7. The new form of implant thread according to claim 1, characterized in that: The outer diameter of the portion of the implant body provided with threads decreases gradually from top to bottom.

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