КРАЙГ Брэдли Д. (US),ДУНБАР Тимоти Д. (US),ДЕДЕ Карстен (DE),ЭКЕРТ Адраин С. (DE),АБЕЛЯМАН Ахмед С. (US),КОБУССЕН Григорий А. (US),ТАЛАКЕР Кристоф Х. (DE),ХОМНИК Пауль Дж. (US)
申请号：
RU2018128362
公开号：
RU2018128362A
申请日:
2017.02.01
申请国别(地区):
RU
年份:
2020
代理人:
摘要：
Dental compositions and methods of formulating a dental composition are described. In one embodiment, the dental composition comprises a polymerizable resin comprising one or more ethylenically unsaturated monomers or oligomers and nanoparticles. The nanoparticles have a refractive index of at least 1.600 and an average discrete or aggregate particle size of no greater than 100 nm. The dental composition further comprises inorganic metal oxide filler having a discrete or aggregate average particle size of at least 200 nm. The nanoparticles are present at a concentration to provide a refractive index differential between the cured polymerizable resin and inorganic metal oxide filler such that the contrast ratio of the dental composition is at least 40.
