前牙唇侧齐龈边缘肩台EMAX铸造陶瓷全冠的临床效果评价

目的 评价唇侧齐龈边缘肩台在前牙EMAX铸造陶瓷全冠修复中的临床应用效果.方法 对120颗前牙预备唇侧齐龈肩台,EMAX铸造陶瓷全冠修复.修复后1周、6个月、1年、2年复诊,从EMAX铸造陶瓷全冠的颜色、边缘着色、有无继发龋以及形态和边缘密合度等方面评价修复效果.结果 120颗患牙修复后1周、6个月、1年及2年比较,修复体颜色、边缘着色、继发龋发生率、修复体形态和边缘密合度变化的差异无统计学意义(P＞0.05).修复后2年,120颗铸造陶瓷全冠修复体,114颗修复体颜色、明暗度、透光度与邻牙协调一致,5颗与邻牙不完全一致,但在正常范围内,1颗与邻牙不一致；118颗修复体边缘线上无可见的边缘着色,1颗修复体边缘线上可见边缘着色但着色未向牙髓方向渗透,1颗边缘着色且着色向牙髓方向渗透；117颗修复体与基牙外形延续一致或稍凹陷,3颗修复体与基牙外形表面相比凹陷明显,但牙本质未暴露；120颗患牙均未发现继发龋,修复体边缘密合度良好.结论 唇侧齐龈边缘肩台的EMAX铸造陶瓷全冠修复体在临床上可获得理想的美学效果和边缘适应性.

Evaluation of clinical effect of EMAX full ceramic crown with equigingival margin at labial side for anterior teeth

Objective To evaluate the clinical effect of EMAX full ceramic crown with equigingival margin at labial side for anterior teeth.Methods One hundred and twenty anterior teeth restored with EMAX full ceramic crown with equigingival margin at labial side were evaluated with regards to the color match,marginal discoloration,secondary caries,shape,and marginal fitness at 1,6 months and 1,2 years after crown bonding.Results There’s no significant difference(P>0.05) of their shape,color match,marginal discoloration,secondary caries and marginal fitness 1,6 months and 1,2 years after crown bonding,and all of the items were up to Level A.Conclusion EMAX full ceramic crown with equigingival margin at labial side has good clinical effect in esthetic and marginal fitness.