文档介绍：贵金属合金带桩嵌体修复大面积牙体缺损的短冠牙
作者:蒋昊,李正明,张蕾,张丽
【摘要】目的:评价利用贵金属合金带桩嵌体修复短冠牙体缺损的效果。方法:对146颗后牙残冠经完善根管治疗后,制作贵金属合金带桩嵌体,修复完成后,每年复查1次。结果:经过1~4年的随访观察,144颗患牙经过修复治疗后获得满意效果,1例出现修复体边缘密合不良及继发龋、1例出现食物嵌塞。结论:利用贵金属合金带桩嵌体修复短冠牙体缺损,是一种效果良好的修复方法。
【关键词】牙科合金;牙缺损;牙修复,永久;密合度
[ABSTRACT] Objective: To evaluate the effects repairing extensively damaged short crown molar with golden alloy post inlay. Methods: After being treated with root canal therapy, 146 extensively damaged short molar crowns were reconstructed by golden alloy post inlays. All cases were reguired to recheck once a year. Results: According to a period of 1 to 4 years followup, 144 out of 146 restored crown molars were well repaired except one failure due to secondary dental caries and illfitting marginal adaptation, and one failure with food impaction. Conclusion: Extensively damaged short crown of molars can be well reconstructed by golden alloy post inlays.
[KEY WORDS] Golden alloy post inlay; Damaged molar; Reconstruction of damaged molar, permanent; Marginal adaptation
临床上对于合龈距离短的后牙残冠的修复是个难点,修复方法不少,如:金属全冠、桩核全冠、髓室固位嵌体、桩核固位嵌体等[1,2],但并无一种特别有效的方法,因为每种修复方法都有足以引起修复失败的缺点,如:固位不良、微渗漏、牙体折裂、牙周损害、对合牙磨耗过度等等。本文作者收集2004~2007年使用金合金带桩嵌体修复合龈距离短的后牙残冠并可随访的115例患者(146颗牙),加以总结,为找到最合适的修复方法提供参考。
1 资料与方法
一般资料
患者115例(146颗牙),男性76例,女性39例;年龄26~62岁;修复时间1~4年;选择标准为合龈距离小于4 mm后牙残冠,冠硬组织缺损达50%~80%,其中有21颗残冠髓室高度小于2㎜,所有患牙已行完善根管治疗。
材料
带桩嵌体材料为金钯合金,印模材料