TRANSLUCENT AND RADIATION-IMPERMEABLE GLASS CERAMIC

Japanese Patent JP2005075724

A

To obtain a dental material having radiation impermeability, high chemical durability and adjustable translucence, brightness and the coefficient of thermal expansion.

Translucent and radio-impermeable glass-ceramic comprises, by weight, SiO2 of 46.0-58.0%, P2O5 of 2.0-6.0%, Me2O3 of 10.0-22.0%, Me2O of 14.5-30.0%, MeO of 4.0-13.0% and F of 0.3-3.0% (wherein, Me2O3, Me2O and MeO are metal oxides regulated in this specification). When CaO content is 0.1-2.5 wt.%, at least one of SrO and MgO is contained by 3.1 wt.% or more. The glass-ceramic has apatite as its main crystal phase.

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HOEN CHRISTIAN VAN T
APEL ELKE
HOELAND WOLFRAM
RHEINBERGER VOLKER M

JP2004253651A

March 24, 2005

August 31, 2004

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IVOCLAR VIVADENT AG

A61C13/083; A61K6/027; A61K6/06; C03C3/11; C03C10/00; C03C10/02; C03C10/10; C03C10/16; C03C14/00; (IPC1-7): C03C10/02; A61C13/083; A61K6/027; C03C10/10

Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita

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