Method for preparing rehabilitation die for oral cavity

Abstract

A process for preparing the oral-cavity repairing model of oral reparing body includes proportionally mixing semi-hydrated gypsum, coagulation-expansion regulator and water, stirring for 2-3 min, and casting. Its advantages are high adaptability and strength and good memory characteristic.

Description

Technical field: [0001] The invention relates to the preparation of dental materials, in particular to a preparation method of an oral all-ceramic prosthetic model. Background technique: [0002] In modern oral restorative treatment, all-ceramic crown and bridge restoration materials have become a main restoration method. The success of the restoration mainly depends on the suitability, strength and aesthetics of the restoration. Therefore, fit becomes the primary factor in evaluating restorations. In the existing treatment process, after the clinician prepares the tooth, the impression is taken with silicone rubber or alginate, and the model is reproduced with nearly zero-expansion anhydrite. The space reserved for the adhesive between the teeth needs to be coated with plastic interstitial material on the surface of the model, and then the negative model is made with silicone rubber and the replica is made with superhard plaster. In actual operation, gap materials are of...

AI Technical Summary

Problems solved by technology

In the process of making the model, due to the difference in the proficiency of the operators, especially because the diluent of the gap material is volatile, the consistency of the gap material often changes, making it difficult to control the thickness of the coating, which ultimately affects the suitability of the restoration.

In addition, the dies made of traditional die materials often cause changes in the size of the model with changes in storage time, air temperature and humidity, and also easily affect the accuracy of the restoration.