Development of accelerated remineralization method based upon the non-invasive assessment of mineral density of tooth

研制了牙表面矿物质密度超声测量系统。该系统实现了灵敏、无损、快速的测量。利用该系统分析了口腔环境，尤其是唾液的功能与牙齿矿物质密度的关系。结果表明，酸电阻率与牙矿物超声密度相关。这表明，根据牙矿物质的超声密度、唾液的缓冲能力和日常生活实践，可以制定新的预防蛀牙方案。

Ultrasonic measurement system for mineral density of tooth surfaces had been developed. This system actualized significantly sensitive, non-destructive, and quick measurement. Using this system, we analyzed the relationship between mineral density of tooth and oral environment, especially function of saliva. The result revealed that acid resistivity was correlated with ultrasonic density of tooth mineral. This indicated the possibility of developing new preventive program against tooth decay according to the ultrasonic density of tooth mineral, buffering capacity of saliva, and living practice of daily life.