Manufacturing method of digitally 3D printed soft elastic mouthguard

Abstract

The invention discloses a manufacturing method of a digital 3D printing soft elastic mouthguard. Step 1: obtaining the relationship between the user's intraoral optical impression and dentition; step 2: obtaining the user's intraoral optical impression and dental The relationship between the columns establishes a digital model; step 3: print the digital model through a 3D printer to obtain a mouthguard. The present invention collects the user's dentition data through high-precision optical impression technology (ie digital oral scanning), realizes the computer simulation of the user's upper and lower jaw opening and closing movement through the electronic facebow and virtual joint frame, and is based on the above two steps Export the digital model of the upper and lower first molars with an appropriate distance, build the mouthguard model in industrial-grade CAD software, and finally use biocompatible soft elastic 3D printing materials and high-precision 3D printing technology to materialize the mouthguard .

Description

technical field [0001] The invention belongs to the field of oral digitization, and in particular relates to a manufacturing method of a digital 3D printing soft elastic mouthguard. Background technique [0002] The original custom-made mouthguard manufacturing technology is vacuum heating and laminating technology. The brief process is to heat the diaphragm to a specific temperature on the plaster cast of the maxillary dentition filled with undercuts and make it under vacuum conditions. The deformable diaphragm exerts pressure to deform and fit with the plaster model, so as to achieve the purpose of obtaining a mouthguard that is closely related to the teeth and mucous membranes in the oral cavity. [0003] The disadvantage of this technology is that a stable occlusion cannot be formed between the mouthguard and the mandibular dentition. It needs to be adjusted and ground by a dentist before it can be put into use. During preparation, the undercut depth of the plaster model...

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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