| 전부도재관 제작용 침투유리의 열팽창계수의 결정 |
| 김병수, 이득용1, 김학관, 장주웅 |
㈜우리동명 치과재료연구소
1대림대학 재료정보공학과 |
| The Decision on the Thermal Expansion Coefficient of the Glass Infiltrated in All Ceramic Crown |
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| ABSTRACT |
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Using alumina-glass infiltrated material which has been in the spotlight of biomaterials including dental material, appropriate composition of glass infiltrated material mainly depends on the thermal expansion coefficient. To obtain proper compositional glass of suitable thermal expansion coefficient effiiently. a Taguchi analysis was conducted. The influence of alkali oxide and alkali earths oxide, which affect mostly the thermal expansion coefficient of glass infiltrated material, was infiltrated material, the effect having influenced on the thermal expansion coefficient of glass was presented in this order (Na$_2$O≫K$_2$O ≫MgO≒CaO). The effect of Na$_2$O was about eight times as great as the effects of MgO, CaO and $K_2$O was about four times. Among the interaction affects of each variables the interaction affects of $K_2$O-CaO showed most significantly and thermal expansion property of specified composition was predicted by calculating contribution rate on each level of variables and interaction affects. |
| Key words:
Taguchi experimental method, Infiltration glass, Thermal expansion coefficient, Alkali and alkali earths oxide, Interaction affect |
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