Development of silica thin film coating method in the mouth with biosafety.

虽然有很多研究是关于替代被龋齿拔掉的牙齿的牙科材料，但关于治疗龋齿和预防龋齿的材料的研究很少。如果在牙齿表面覆盖一层无色透明的二氧化硅薄膜，就有望防止龋齿。本研究的目的是利用预陶瓷聚合物过氢聚硅氮烷（PHPS）作为硅前驱体在牙齿表面形成硅薄膜，建立生物安全的硅涂层方法。利用傅里叶变换-红外光谱分析了PHPS转化为二氧化硅的过程。结果，应用3%过氧化氢溶液，用二氧化碳激光照射后，得到一个显示转化二氧化硅的峰，使考虑生物安全性的二氧化硅转化方法成为可能。

Although there are so many studies into the dental materials alternative to the tooth that was removed by caries, there are few research related to treatment and materials for prevention of dental caries. If the tooth surface is covered with a colorless transparent silica thin film, it can be expected to prevent caries. The purpose of this study was to use the pre-ceramic polymer perhydropolysilazane(PHPS) as a silica precursor to form a silica thin film on the tooth surface, and build silica coating method of biological safety. The conversion from PHPS to silica was analyzed with Fourier Transform-infrared spectroscopy. As a result, after applying the 3% hydrogen peroxide solution and irradiated with carbon dioxide laser, a peak showing a conversion silica is obtained, silica conversion method considering biological safety has become possible.