摘要
目的 研制用于牙科计算机辅助设计与辅助制作磨牙冠、可提供多种颜色选择的可切削四硅酸氟云母微晶玻璃。方法 采用正交设计技术 ,对影响微晶玻璃颜色的基础配方、色料组成及热处理制度进行筛选。结果 从基础配方中选择出影响呈色的 2个主要因素 :晶核剂F含量、Mg2 + /K+ 比例 ;从多种色料中选择出主要色料CeO2 ;从热处理制度中选择出成核制度 :650℃保持 1h和晶化制度 :1 0 0 0℃或 1 0 50℃保持 3h～ 4h。结论 所研制的云母微晶玻璃 ,可提供 4～ 5种牙科颜色 ,其切削性能良好 ,完全可以满足计算机辅助设计 辅助制作 (CAD/CAM )
Objective An intrinsically colored machinable glass ceramic containing tetrasilicic fluormica as the predominant crystal phase was studied, which was used in molar crown in dental CAD/CAM system Methods Orthogonal design analysis was used to select appropriate base formula, coloration and heat treatment process Results Factors influencing the color appearance of mica glass ceramic were nucleation agent and the ratio of Mg 2+ to K + in base formula; Cerium oxide(CeO 2) was used as the main coloration; The preferred heat treatment was 650℃ for 1h and 1 000℃ or 1 050℃ for 3 h～4 h Conclusions This mica g lass ceramic could provide 4 to 5 color appearance for dental use, it showed excellent machinability which was eminently suitable for use in dental CAD/CAM system
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2003年第2期137-139,共3页
Chinese Journal of Stomatology
