Tooth repair nanometer hydroxyapatite composite material and preparation method thereof

Abstract

The present invention provides a tooth repair nanometer hydroxyapatite composite material and a preparation method thereof, wherein the composite material comprises 45-65% by mass of nanometer hydroxyapatite and 35-55% by mass of a resin matrix, and the nanometer hydroxyapatite contains powdery sodium fluoride having the amount of 2% of the mass of the nanometer hydroxyapatite. Compared with the existing material, the nanometer hydroxyapatite composite material of the present invention has advantages of strong mechanical and physical property, good biocompatibility, excellent biological activity and the like, meets requirements of dental repair material bionics, can be used for tooth defect repair, can be provided for overcoming defects of strong dental pulp irritation, weak tooth bonding force and the like of the current dental repair material, provides new breakthrough for clinical treatment of dental disease, and has broad market prospects. The tooth repair nanometer hydroxyapatite composite material prepared by using the preparation method of the present invention has a good use result.

Description

technical field [0001] The invention provides a stomatology restoration material, in particular to a nano-hydroxyapatite bioactive material for tooth restoration. Background technique [0002] Restorative materials are one of the key research contents in the field of dentistry. Although the chemical, mechanical, physical and biological properties of the currently used restoration materials have been significantly improved, tooth defect repair materials with properties similar to those of dental hard tissues and with biological activity Still not applied clinically. [0003] Teeth are the hardest tissue in the body composed of a continuous phase of organic molecules and hydroxyapatite (HA) crystals dispersed in it, and are non-renewable. HA is a calcium phosphate hexahedral structure, which is a surface active substance and is the main inorganic component in bones and teeth. The artificial synthesis of HA began in the mid-1970s, and it was only used for alveolar ridge augme...

AI Technical Summary

Problems solved by technology

[0007] Many studies have confirmed that although the composition of HA biomaterials is close to the inorganic substance of teeth, it has excellent biocompatibility and bioactivity, but its own defects such as low strength, high brittleness, poor toughness and mechanical properties limit its wide clinical application. , especially difficult to meet the requirements as a dental restorative material

Therefore, although the application of HA in the field of dentistry is becoming more and more extensive, the research as a restorative material has not been able to make a breakthrough.