Tooth repair nanometer hydroxyapatite composite material and preparation method thereof

A technology of nano-hydroxyapatite and composite materials, applied in dental preparations, dental prostheses, dentistry, etc., can solve the problems of failure to make breakthroughs in restoration materials, poor toughness and mechanical properties, and difficult to meet, and achieve the goal of overcoming dental pulp Strong stimulation, strong mechanical and physical properties, and easy operation

Inactive Publication Date: 2014-07-16
王青山
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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

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Embodiment Construction

[0020] The present invention is further described below.

[0021] Since the tooth hard tissue is mainly composed of inorganic minerals, and the inorganic substances are nano-HA particles (10-100nm), it is theoretically feasible to use NHA particles as the strengthening phase of the resin. NHA can be well dispersed in the resin matrix without destroying the continuity of the resin matrix, and the dispersion of NHA in the resin matrix acts as a reinforcement for rigid particles. The nano-hydroxyapatite and fluoride ions in the composite material of the present invention are expected to be deposited and bonded to the tooth hard tissue, thereby promoting remineralization and preventing secondary caries.

[0022] KH-570 silane coupling agent is γ-methacryloxypropyl trimethoxysilane coupling agent. Hydrothermally synthesized nano-hydroxyapatite is added to 1% KH-570 silane coupling agent aqueous solution for surface treatment, which can increase the wettability, compatibility and c...

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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...

Claims

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Application Information

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IPC IPC(8): A61K6/08A61K6/033A61K6/083A61K6/838A61K6/884
Inventor 王青山荣丽舒静媛张燕孙继军
Owner 王青山
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