Development of Rubber-bonded Diamond Polishing Tool for Dental Ceramics

近年来，随着人们对冠修复美学要求的提高，各种牙科材料被开发出来，应用于嵌体或冠修复。其中，牙科陶瓷在美学满意度、腐蚀控制和耐磨损方面是有效的，并且在生物相容性方面也特别有效。在全冠修复体的制作过程中，光整抛光是一个非常重要的过程，以满足生理和医学上的要求，以及美学上的满足。硬脆材料如陶瓷通常已知其表面完整性可影响其强度。牙科陶瓷也有类似的报道。牙科陶瓷是牙科陶瓷的一部分，是一种硬脆材料。由于抛光技术对于提高其平面度精度非常重要，也由于其强度不断增加，因此迫切需要开发其技术。顺便说一下，目前，在高硬度陶瓷等难加工材料的高精度加工中有效的多晶金刚石主要用作松散磨粒。因此，在本研究中，作为一种新的方法，用于牙科技术的车轮的发展，多晶金刚石尚未被用作粘结磨料。这个砂轮与通常用作粘结磨料的单晶金刚石进行了称重。在砂轮方面，为了临床应用，研制了橡胶结合剂金刚石砂轮，用于抛光牙科陶瓷。本研究的目的是获得与临床常用的牙科陶瓷釉面相当的光滑表面。

Recently, as the demand for aesthetic satisfaction in crown restoration, various dental materials are developed, which are applied to inlay or crown. Among them, dental porcelain is efficient in terms of aesthetic satisfaction, corrosion control, and withstanding wearing, and also especially efficient at biocompatibility. Finishing polish at making process of crown restorations is a very significant process in order to meet physiological and hygienical requirement, as well as for aesthetic satisfaction. Hard brittle materials such as ceramics are generally known that its surface integrity may affect its strength. There are similar reports referring to the dental ceramics. Dental porcelain which is a part of dental ceramics is a hard brittle material. Since polishing technology is important for enhancing its accuracy of flatness, also because of its increasing strength, development of its technology is urgently required. By the way, currently, poly-crystalline diamond which is efficient at high-precision machining of difficult machining materials such as high hardness ceramics is mainly used as loose abrasive grain. Therefore, in this study, as a new approach to development of wheels for dental technique, poly-crystalline diamond which has not been used as bonded abrasive is used. And this wheel was weighed against mono-crystalline diamond which is conventionally used as bonded abrasive. Regarding wheels, for the purpose of clinical appliance, rubber bonded diamond wheels is developed, and polish dental porcelain. The purpose of this study is to obtain the glossy surface equal to glazed surface of dental porcelain which is conventionally adapted to clinical appliances.