Manufacturing method of digitalized small-size stacked high-retention dental implant operation guide plate

Abstract

The invention provides a digitalized small-size stacked high-retention dental implant operation guide plate and a manufacturing method of the digitalized small-size stacked high-retention dental implant operation guide plate. The method comprises the following steps: acquiring preoperative oral cavity CBCT data of a patient, and reconstructing a model I; acquiring optical scanning data of the surfaces of preoperative teeth and gingiva of a patient, and reconstructing a model II; fitting the model I and the model II, and designing a three-dimensional position of the implant in the tooth-missing area; copying the model II, and generating a model III according to the guide plate in-place channel direction; selecting the surface after undercut filling corresponding to the dentition cheek and the lingual surface in the model III as a surface I; according to the boundary of the surface I, extracting a surface II on the model II; combining the surface I and the surface II to generate a lining model; combining the lining model with the model II to generate an outer sleeve main body model of the guide plate; and finally, carrying out machine shaping. By adopting the scheme, retention can be realized by fully utilizing the undercut of the supporting teeth, so that the stability of the guide plate can be guaranteed while the dentition coverage range of the guide plate is reduced, and the precision and safety of the guide plate for guiding an implantation operation are further improved.

Description

technical field [0001] The invention relates to the technical field of dental implantation, and specifically designs a digital small-size stacked high-retention tooth implantation guide plate and a manufacturing method thereof. Background technique [0002] As a method to restore missing teeth, implant dentures have the advantages of good support and retention effects, beautiful appearance, comfortable use, and no damage to adjacent teeth, and are favored by doctors and patients. At present, they are widely used in clinical practice. In implant restoration technology, the most critical step is to accurately prepare the implant holes for future dental implants on the patient's jaw according to the preoperatively planned surgical plan and restoration plan. Dental implant guide plate technology is one of the effective technologies that can accurately translate the above requirements into clinical practice. The significance of using the guide plate during surgery is that it can ...

AI Technical Summary

Problems solved by technology

Dental implant guides currently used in clinical practice are all one-piece designs, and because the materials used to make dental implant guides are high in strength and rigidity, and cannot be elastically deformed, the implant guides cannot enter the inverted position of the supporting teeth during design. The concave area leads to the lack of retentive force between the implant guide plate and the supporting teeth in actual use. The lack of retentive force will lead to a decrease in the stability of the guide plate, which will affect the accuracy of the guide plate-guided implant surgery. In clinical practice, in order to resist this The risk of decreasing the stability of the guide plate caused by the loss of retention force is often designed to cover a wide range of dentition in order to improve the stability of the guide plate, but this design with too large coverage area will not only make it difficult to observe Whether the guide plate is fully in place will also occupy the operation space in the narrow mouth. At the same time, in order to fix the position of the guide plate, the operator or assistant needs to press the guide plate firmly on the supporting teeth, especially in the area of ​​the posterior teeth. The retention mode will bring inconvenience to the operation, which will affect the accuracy of the operation, and will increase the difficulty and error of the guide plate production

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