Anti-rotation implant device

Abstract

The invention discloses an anti-rotation implant device, which comprises an implant, an abutment and a central bolt. There are also at least two spiral self-tapping grooves on the top; there are connecting holes inside the implant, and the connecting holes include coaxial and sequentially connected positioning holes and threaded blind holes; there are at least two positioning protrusions on the upper end of the implant ;The abutment includes a crown connection section and an implant connection section; a ring positioning platform is provided between the crown connection section and the implant connection section, and a positioning groove matching the positioning protrusion is provided on the ring positioning platform ; The inside of the abutment is provided with a stepped hole matching the central bolt; the central bolt passes through the stepped hole and is connected with the threaded blind hole to fix the abutment on the implant. In the present invention, the positioning protrusion on the upper end surface of the implant fits with the circular positioning platform on the abutment, so that it can bear greater rotational torque, make the connection more firm, and prolong the service life.

Description

technical field [0001] The invention relates to the technical field of oral medical instruments, in particular to an anti-rotation implant device. Background technique [0002] With the continuous development of oral implant technology, the technology of "artificial dental implant" has gradually matured and stabilized. Artificial dental implants are to first place a highly biocompatible titanium artificial tooth root into the alveolar for fixation and suture, and after a few months, the artificial tooth root is firmly connected to the bone in the alveolar, and then the subsequent denture installation is performed. The artificial tooth root is directly connected to the bone, which can provide better support and is popular because it can chew hard food. [0003] The outside of the implant is a helical structure, which is fixed in the alveolar bone through threads. After being tightly combined with the gum, the abutment is installed, and finally the denture is installed on the...

AI Technical Summary

Problems solved by technology

Because the upper end of the implant is not fully anastomosed (not completely passively seated), a large stress concentration may be generated at the fixing bolt, causing the fixing bolt to break; There is a certain internal stress at the bolt after tightening, and it is easy to break under long-term action

[0006] 2. Difficult to be passive

However, due to the internal connection, the hexagonal or octagonal size must be smaller than the inner diameter of the implant, and if the size difference is not large, the inner wall of the implant at the junction will inevitably be very thin, which will cause the material to be weak and easy to break the inner wall; If the size difference is large, the inner diameter of the hexagon or octagon is relatively small, and the corresponding rotational torque will become larger, which is easy to trip and cause structural damage.

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