金瓷桥3种桥体龈端形态的临床应用

Analysis of clinical applying on the form of three types of pontics tissue surface of the ceramometal bridge

目的:探讨金瓷桥3种桥体龈端形态的临床应用效果。方法:选择门诊待行单个后牙双端烤瓷固定桥修复的60例患者,将烤瓷桥体龈端形态随机分为改良鞍式桥体、改良盖嵴式桥体、舟底式桥体3组,按所设计桥体形态的要求完成修复体,3个月后取下修复体。观察3组患者戴用烤瓷桥体前后桥体龈端形态异物感、发音、美观效果以及桥体接触区发生粘膜红肿、炎症的情况。结果:60例患者仅5例出现异物感,戴用改良鞍式桥体的患者未出现明显异物感,戴用改良盖嵴式桥体的患者出现异物感4例(6.7%)。以舟底式桥体粘膜红肿发生率最低,炎症程度最轻,改良鞍式桥体粘膜红肿发生率最高,炎症程度最重,3组患者比较差异有统计学意义(x2=5.42,P< 0.05)。结论:舟底式桥体优于改良鞍式桥体和改良盖嵴式桥体,是值得临床推广应用的一种更优化的桥体设计。

Objective： To investigate the clinical effects of the application on three ceramometal pontics types. Methods： Sixty patients who were ready to accept fixed partial denture about three unite bridge were selected and divided into three groups at random： modified base-type pontic, modified ridge lap pontic and the ovate pontic. 3 months after insertion fixed partial dentures were observed in order to compare to the effects of three types of pontic. Results： After three months wearing ceramometal bridge, there were statistical differences （P 〈0.05） among the three groups about comfort, gingivitis; while no difference was found about esthetic and pronunciation （P 〉0.05）. Conclusions： The ovate pontic has a less influence than the other two types and is a more appropriate pontics design type for dentist.