金瓷冠唇面形态修整对前牙美容效果的影响

Effects of microstructure grinded on the labial face of PFM on esthetic prosthesis for anterior teeth

目的 探讨金瓷冠经唇面微细结构研磨对前牙美容修复的影响。方法 选择 193例单个上颌切牙牙体缺损者行金瓷冠美容修复 ,每例各做 2冠 ,配色塑形后A冠唇面不做特殊处理 ,B冠按记录的微细结构做唇面修整 ,口内暂黏固定 ,由患者选择最满意的 1个。结果 选A冠者有 36例 ,选B冠者有 15 7例 ,选B冠者明显多于选择A冠者 (P <0 .0 1) ,选择与患者的年龄、性别和牙位无明显联系 (P >0 .0 5 )。结论 金瓷冠唇面经微细结构研磨更具有生命力、更符合人们的审美心理。

Objective To explore the effects of microstructure grinded on the labial face of porcelain fused to metal crown (PFM) in esthetic prosthesis for anterior teeth. Methods 193 patients with single maxillary incisor tooth defects were repaired with 2 crowns for each one. After the crowns being blent colour and molded, the crown A was not grinded particularly on the labial face and the crown B was done according to the records of the microstructure.The patients were allowed to choose the most satisfied one when 2 crowns were cemented temporarily. Results 36 patients chose the crown A and 157 chose B.The difference was significant ( P< 0.01).There were no correlation of the choice with the patients' age, sex and tooth position ( P >0.05). Conclusion The crown has great vitality and accordes with the esthetic standards of the patients by way of being grinded microstructure on the labial face.