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ÉBAUCHE DE FRAISE DENTAIRE MULTICOUCHE MULTICOLORE
专利权人:
KURARAY NORITAKE DENTAL INC.;クラレノリタケデンタル株式会社
发明人:
KAMEYA Takehiro,亀谷剛大,HIRAMATSU Shogo,平松尚悟
申请号:
JPJP2017/038078
公开号:
WO2018/074605A1
申请日:
2017.10.20
申请国别(地区):
JP
年份:
2018
代理人:
摘要:
The present invention provides a dental mill blank with which it is possible to use a cutting process to provide a dental prosthesis having a color tone and transparency that are more similar to those of natural teeth. The present invention relates to a dental mill blank formed from a laminated body, wherein the laminated body includes at least three layers, namely an uppermost layer, at least one intermediate layer, and a lowermost layer. Each of the layers forming the laminated body includes a filler (A) and a polymer (B), and the filler (A) in each layer includes at least one type of inorganic particle (a) and at least one type of pigment (C). A chromaticity difference ΔE*T between the uppermost layer and the lowermost layer is at least equal to 5.0 and at most equal to 15.0; a transparency difference ΔΔL*T between the uppermost layer and the lowermost layer is at least equal to 5.0 and at most equal to 15.0; a chromaticity difference ΔE* between all adjacent layers is at least equal to 1.0 and at most equal to 5.5; a transparency difference ΔΔL* between all adjacent layers is at least equal to 1.0 and at most equal to 5.0; a transparency ΔL*H of the uppermost layer is at least equal to 13.5 and at most equal to 25.0; and a transparency ΔL*L of the lowermost layer is at least equal to 7.0 and at most equal to 13.0.La présente invention concerne une ébauche de fraise dentaire avec laquelle il est possible d'utiliser un procédé de coupe pour fournir une prothèse dentaire ayant un ton de couleur et une transparence qui sont plus similaires à celles de dents naturelles. La présente invention concerne une ébauche de fraise dentaire formée à partir d'un corps stratifié, le corps stratifié comprenant au moins trois couches, à savoir une couche supérieure, au moins une couche intermédiaire, et une couche la plus basse. Chacune des couches formant le corps stratifié comprend une charge (A) et un polymère (B), et la charge (A) dans chaque couche comprend au moins un type d
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