Preparation method of dental restoring resin taking silicon dioxide and cluster of silicon dioxide as stuffing

Abstract

The invention relates to a preparation method of dental restoring resin taking silicon dioxide and cluster of the silicon dioxide as stuffing. The method comprises the following steps: (1) preparing the cluster of the silicon dioxide by using the reaction between bonded groups on the surface of silicon dioxide; (2) adding the silicon dioxide, the cluster of the silicon dioxide, an amine catalyst, and a double-bond-containing silane coupling agent in a cyclohexane solvent, thus obtaining surface-functionalized inorganic general stuffing after reaction; and (3) uniformly mixing the surface-functionalized inorganic general stuffing and an organic resin matrix with a light initiator and finally carrying out photo-curing for 40-120s, thus obtaining the dental restoring resin. The method is simple in preparation technology, easy to operate and suitable to industrial production; the raw materials are cheap in price; and the obtained dental restoring composite resin has a low polymerization-shrinkage ratio and excellent wear-resistant performance and is expected to be used clinically.

Description

technical field [0001] The invention belongs to the field of preparation of dental restoration materials, in particular to a preparation method of dental restoration resin using silicon dioxide and its clusters as fillers. Background technique [0002] Since the advent of composite resin as a dental restoration material in the mid-1960s, it has been widely used due to its unique aesthetics, good biocompatibility, excellent physical-mechanical properties, and convenient handling. In the treatment of anterior and posterior teeth, it gradually replaces the traditional silver amalgam and becomes a dental restoration material that is widely welcomed by doctors and patients. However, there are still some deficiencies in this type of material, such as high polymerization shrinkage, mismatch between mechanical properties and teeth, and poor wear resistance during long-term use. These deficiencies limit the wider application of this type of material. . [0003] Dental restoration c...

AI Technical Summary

Problems solved by technology

With the development of organic synthesis technology, people have reduced the polymerization shrinkage of the composite resin to about 2% by using a new type of organic matrix, but the synthesis method of this type of monomer is relatively complicated, and the reagents required are expensive, which is not conducive to large-scale production , so the research and development of inorganic fillers has aroused more widespread attention

Inorganic fillers, as the dispersed phase of composite resins, are mainly used to enhance the physical-mechanical properties of composite resins. From the early stage of large-particle fillers to the commonly used mixed micro-fillers, this development has greatly improved the performance of composite resins, but The micron-sized filler in the filler will gradually fall off during long-term use, thereby forming pits on the surface of the material, which seriously affects the aesthetic performance of the resin

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