Method for preparing tooth implant locating guiding template

Abstract

The invention relates to a method for producing a tooth plant positioning guiding template, comprising the following steps: (1) scanning the jaw bone of sufferers by multiple-layer helix CT to obtain the three dimensional anatomy structure information of the jaw bone; (2) establishing a three dimensional jaw bone model in CAD software; (3) measuring the bone structure of the plant area lack of tooth according to the three dimensional jaw bone model; (4) confirming the plant point, direction and depth of the dental implant according to the measuring result; (5) producing the positioning guiding template entity model based on dental face- bone face combination support type by applying photo-curing rapid forming technology; (6) having surface treatment to the positioning guiding template entity prototype. The advantage of the invention is that: a surgery positioning guiding template adopts a retention method of dental face-bone face combination support with accurate retention, high precision and convenient process.

Description

technical field [0001] The invention relates to a design and manufacture method of a positioning and guiding template for oral implant surgery, and in particular discloses a manufacturing method of a dental implant positioning and guiding template supported by tooth surface-bone surface joint support. Background technique [0002] Oral implant restoration surgery is mainly used in the treatment of patients with dentition and dentition defects. For oral implant surgery, the implant site, implant path, implant depth and implant angle are important factors that affect the success of the operation. [0003] Although surgeons with rich clinical experience can moderately grasp the position, direction and depth of dental implants in surgical operations, for many complex cases, especially in areas with multiple tooth loss, abnormal bone structure or bone defects, etc. When it exists, it is often easy to lead to mistakes, resulting in alveolar bone sid...

AI Technical Summary

Problems solved by technology

[0006] (1) Poor accuracy

Due to the gap between the model and the actual situation, the thickness of the gingival mucosa is generally 2mm to 5mm, and with the prolongation of the tooth loss area, the effect of mastication and inflammation, thickening of the mucosa or pathological changes, aggravated the gradual atrophy of the alveolar bone , the height and width of the covered bone below the periosteum cannot be correctly estimated; some patients have alveolar bone defects after tooth extraction, and the template design based on the model may lead to perforation of the side wall of the implant drill and damage the inferior alveolar nerve and maxillary sinus Possibility of important tissues such as the base, resulting in serious complications

[0007] (2) The accuracy is not high

Since the implant surgery is performed after separating and peeling off the gingival mucosa tissue flap, there is a certain distance between the traditional surgical template and the bone surface of the implant area, forming a cantilever end or a suspended bridge, which makes the positioning of the implant positioning drill in the positioning hole of the template inaccurate , the suspended part will cause the positioning drill to swing, which will affect the accuracy of implant surgery;

[0008] (3) Poor retention. During the operation, there is no chimeric retention part between the traditional surgical template and the mucosa or bone surface. When the doctor places and fixes the template position based on experience, the template will be deflected and the direction of the implantation will be wrongly guided, which affects the Precision and accuracy during implant placement