Manufacturing method of digital 3D printing soft elastic tooth protector

Abstract

The invention discloses a manufacturing method of a digital 3D printing soft elastic tooth protector. The manufacturing method comprises the following steps: 1, acquiring a relationship between an intraoral optical impression and dentition of a user; 2, establishing a digital model according to the intraoral optical impression of the user and the relation between dentitions; and 3, printing the digital model through a 3D printer, and obtaining the tooth protector. According to the method, dentition data of a user are collected through a high-precision optical impression technology (namely digital oral scanning), computer simulation of opening and closing movement of the upper and lower jaws of the user is achieved through an electronic face bow and a virtual closing frame, and a digital model for opening the first molars of the upper and lower jaws by a proper distance is exported on the basis of the two steps. A tooth protector model is constructed in industrial-grade CAD software, and finally, the tooth protector is materialized by using a biocompatible soft elastic 3D printing material and a high-precision 3D printing technology.

Description

technical field [0001] The invention belongs to the field of oral cavity digitization, and in particular relates to a method for manufacturing a digital 3D printed soft elastic mouthguard. Background technique [0002] The original custom-made mouthguard manufacturing technology is vacuum heating and pressing film technology. The brief process is to heat the film to a specific temperature on the plaster model of the maxillary dentition filled with undercuts and keep it under vacuum conditions. The deformable diaphragm applies pressure to make it deform and fit the plaster model, so as to achieve the purpose of obtaining a mouthguard closely related to the teeth and mucous membrane in the oral cavity. [0003] The defect of this technology is that the mouthguard and the mandibular dentition cannot form a stable occlusion, and it can only be put into use after being adjusted by the dentist. The depth of the undercut of the plaster model is manually controlled by the dentist du...

AI Technical Summary

Problems solved by technology

[0003] The defect of this technology is that the mouthguard and the mandibular dentition cannot form a stable occlusion, and it can only be put into use after being adjusted by the dentist. The depth of the undercut of the plaster model is manually controlled by the dentist during preparation. Therefore, the experience of the doctor is raised It has high requirements and the repeatability is not strong; the production process is cumbersome, and the user needs to take molds, return to the clinic to adjust and grind the occlusal surface, and go back and forth to the dental clinic several times to get the finished product; the thickness of different parts is also difficult to achieve the protective performance of the mouthguard material. The optimal thickness of the mouthguard is proved by the frequent publications in international journals on the improvement of the lamination method of the mouthguard in recent years; the production process is relatively primitive, and the precision is difficult to control, which leads to poor retention between the final molded mouthguard and human tissue There is a risk of falling off during use; another problem caused by the difficulty in controlling the precision is that the fit between the mouthguard and human tissue is unstable. The literature points out that the protection performance of a mouthguard with a poor fit is better than that of a mouthguard with a good fit. gear difference

To sum up, traditional custom-made mouthguards require high experience from specialists, poor repeatability, cumbersome manufacturing process, weak retention, and difficult control of thickness and fit. Mouthguards made by this method Unsatisfactory protection performance and comfort

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