Needle-like apatite-leucite glass-ceramic as a base material for the veneering of metal restorations in dentistry

被引：62

作者：

Höland, W ^{[1
]}

Rheinberger, V ^{[1
]}

Wegner, S ^{[1
]}

Frank, M ^{[1
]}

机构：

[1] Ivoclar Ltd, FL-9494 Schaan, Liechtenstein

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE | 2000年 / 11卷 / 01期

关键词：

Polymer; Precipitation; Crystallization; Optical Property; Apatite;

D O I：

10.1023/A:1008977416834

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 [生物医学工程];

摘要：

A needle-like apatite-leucite glass-ceramic was prepared in the SiO2-Al2O3-Na2O-K2O-P2O5-F system. Nucleation and crystallization processes were studied in bulk and powdered samples. The crystallization of leucite follows the mechanism of surface crystallization. After the precipitation of NaCaPO4 crystals and another unknown crystal phase, the formation of needle-like apatite is based on a volume nucleation and crystallization process. The mechanism of the formation of needle-like apatite differs to those of apatite precipitation in glass-ceramics. The morphology of needle-like apatite is comparable to that of apatite in natural teeth. The properties of the glass-ceramic, especially the good chemical durability, the optical properties, as well as mechanical and thermal properties allow glass-ceramic to be used as a main component in a bio-material for the veneering of metal restorations in dentistry. (C) 2000 Kluwer Academic Publishers.

引用

页码：11 / 17

页数：7

共 23 条

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[2]

STRUCTURE OF THE LOW-TEMPERATURE VARIETY OF CALCIUM SODIUM ORTHO-PHOSPHATE, NACAPO4 [J].