치관보철용 CaO-MgO-SiO2-P2O5-TiO2계 글라스 세라믹의 결정화와 기계적 물성에 미치는 열처리 조건의 영향
Effects of Heat-treatment on Crystallization and Mechanical Properties of Glass ceramics for Dental crown prosthesis in the system CaO-MgO-SiO2-P2O5-TiO2
정인성, 김부섭,
소속 상세정보
정인성 ( Chung In-Sung ) - 부산가톨릭대학교 보건과학대학 치기공학과
김부섭 ( Kim Bu-Sob ) - 부산가톨릭대학교 보건과학대학 치기공학과
KMID : 0362120040260010077
Abstract
Glass ceramics for dental crown prosthesis were prepared by crystallization of CaO-MgO-SiO2-P2O5-TiO2 glasses. Their crystallization behaviors have been investigated as a function of heat-treatment temperature and holding time in relation to mechanical properties.The results are as follows:Vickers hardness and bending strength of glass ceramics increased due to the precipitation ofapatite, whitlockite, -wollastonite, magnesium titanate, and diopside crystal phases within glassmatrix. The final crystalline phase assemblages and the microstructures of the glass ceramics were foundto be dependent on heat-treatment temperature and holding time.Vickers hardnes and bending strength of glass ceramics increased with increasing heat-treatmenttemperature and holding time.
키워드
Glass ceramics;Vickers hardness;Bending strength;Heat-treatment temperature
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