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《Journal of Clinical Stomatology》 2014-07
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Comparison the fitness of zirconia ceramic crown sintered by microwave sintering method and conventional sintering method

WU Li-yan;SU Xiao-hui;WANG Lei;WEI Zan-jun;Department of College of Stomatology,Guangxi Medical University;Guangxi Shenya Technology Co.,Ltd;  
Objective:To study the effect of different sintering method on the marginal and internal adaptation of Cercon zirconia crowns. Method:A first premolar teeth was prepared and replicated in to ten resin castes. The units were randomly assigned to two groups and the crowns were made by CAD/CAM system. Group one was sintered by manufacturers recommend conventional second-time sintering process. Group two was sintered by microwave second-time sintering process. All crowns adhered to the corresponding dies and compare their adaption through statistical analysis.Result:Marginal fit and axial plane of zirconia ceramic crowns sintered by two methods have no significant differences(P 0.05). Shoulder suitability and occlusal surface have significant differences(P 0.05).Conclusion:Microwave sintered Cercon zirconia crowns appeared to have clinically acceptable marginal fit.
【Fund】: 广西教育厅科研资助项目(201012MS047)
【CateGory Index】: R783.1
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