Wing soft tissue ring cutter for dental implant surgery

Abstract

The invention discloses a winged soft tissue girdling knife for dental implant surgery, which comprises a positioning guide plate, a cutting channel is arranged on the positioning guide plate, a sleeve is arranged at the top of the cutting channel, a limiting baffle is arranged in the sleeve, a through hole coaxial with the sleeve is formed in the limiting baffle, a connecting rod in clearance fit with the through hole is arranged in the through hole, and the connecting rod is arranged in the through hole. The top end of the connecting rod is located above the limiting baffle and fixedly connected with a pressing base, the bottom end of the connecting rod penetrates through the through hole and is detachably connected with an annular cutter matched with the covering screw, the portion, between the pressing base and the limiting baffle, of the connecting rod is sleeved with a spring, and a plurality of protruding blades evenly distributed around the center of the cutter are arranged at the bottom of the outer wall of the cutter. The center of the inner bottom of the cutter is further connected with an extraction hook. The positioning device is manufactured through CBCT and oral scanning data, a covering screw is accurately positioned, and a cutting extraction device is matched, so that operation is more convenient, postoperative adverse reactions of a patient are relieved, the infection risk is reduced, and wound healing is better.

Description

technical field [0001] The invention belongs to the technical field of dental implantation, in particular to a winged soft tissue circumcision knife for dental implantation. Background technique [0002] With the development of oral implantology, implant denture restoration has become a routine repair method for dentition defect or loss. Implant treatment is divided into submerged implant and non-submerged implant. The second stage of dental implant surgery is submerged implant. A necessary stage is to form a connection channel between the embedded implant and the oral cavity, and it is also the best opportunity for the soft tissue around the implant to be shaped. Whether the soft tissue is treated ideally will directly affect the aesthetic effect of the implant restoration gingiva. Successful two-stage implant surgery improves aesthetics while protecting the implant from microorganisms and reducing the risk of infection. [0003] Currently, there are three commonly used tr...

AI Technical Summary

Problems solved by technology

[0004] (1) Flap surgery: A large area of ​​soft tissue flap is performed in the area where the implant is located to expose the alveolar crest, and the position of the implant is determined visually; a large area of ​​gingiva is incised to expose the surgical area The alveolar crest of the alveolar ridge greatly increases the adverse reactions of patients after surgery and the risk of infection in the operation area. If the implant cannot be positioned accurately after being embedded by bone, it is easy to be affected by the field of view of the operation area, individual anatomical features and the experience of the operator. Misjudgment occurs, unnecessary alveolar bone is ground away, the patient’s postoperative reaction is increased, and the implant is even damaged; in addition, the flap “line” incision cannot trim and shape the gingiva on the upper part of the implant, and cannot achieve implant restoration. Restorative gingival aesthetics;

[0005] (2) An H-shaped incision is made in the operation area to expose the covering screw; it is impossible to accurately determine the position and direction of the implant based on the data of the oral cone-beam CT film and visual inspection, and the technique is highly sensitive. The surgeon's taste inspection, once the covering screw cannot be found, the flap needs to be turned again to expose the operation area and expand the field of vision, which is not conducive to the patient's wound healing;

[0006] (3) Circumcision, use the circumcision bur of the dental slow-speed mobile phone to circumscribe the soft tissue and expose the covering screw; its technical sensitivity is high, and the covering screw cannot be accurately positioned, and it is easy to cause the bur to cut the tooth when the speed cannot be controlled. groove bone, or even damage to the implant, leading to the failure of the implant surgery; at the same time, when the cover screw is embedded under the bone, the mucosa and periosteum are tightly combined, and it is difficult to remove the excised soft tissue on the basis of the lack of a separator

[0007] At the same time, the patent "201510000800.8" ​​"Positioning Gingival Circumcision Device for Dental Implant" is also a device for circumcision of the gingiva. However, the diameter of the lower part of the healing abutment is generally smaller than that of the implant, so that after the healing abutment is installed, there is no tight connection between the lower part of the healing abutment and the soft tissue. Infection, even bone resorption; at the same time, its positioning relies on the probe to obtain the slot of the covering screw, and inserts the central positioning pin into the covering screw hole for positioning. It cannot accurately judge the position of the implant, and the implant can only be estimated by the estimation method In the actual implementation of the second-stage operation, alveolar bone is likely to be attached to the covering screw hole, resulting in the inability of the positioning pin to be inserted into the covering screw hole, so that the positioning cannot be achieved, and the device cannot be continued to be used; at the same time , the device cannot extract the cut soft tissue after cutting, and needs to use other extraction tools. In the narrow operating space, it also has the disadvantages of narrow field of vision, insufficient flexibility, and high requirements for opening, which affects the practicability

Images