中文摘要：

目的：评价含有纤维分体桩的钴铬合金烤瓷高嵌体以及二氧化锆全瓷高嵌体修复低龈距后牙残冠的临床效果。方法：用含纤维分体桩的钴铬合金烤瓷高嵌体、二氧化锆全瓷高嵌体以及金合金分体桩高嵌体修复低龈距后牙残冠90个,修复后2周、6个月、24个月随访,对解剖形态、边缘适合性、边缘着色、表面质地、继发龋等临床修复效果进行评价。结果：3种分体桩高嵌体之间以及每种分体桩高嵌体于修复后2周、6个月、24个月之间在各评价项目上均无明显统计学差异（P≥0.05）。结论：应用含纤维分体桩的钴铬合金烤瓷高嵌体及二氧化锆全瓷高嵌体对低龈距后牙残冠进行修复,可获得与金合金分体桩高嵌体一样良好的临床修复效果;而且烤瓷和全瓷高嵌体更加美观,可适应不同层次的修复需求。

英文摘要：

AIM ： To evaluate the clinical effects of restoration of posterior residual crown in low occlusogin- gival distance with porcelain-fused-cobalt-chromium alloy onlay and zirconium oxide onlay including fiber fission post. METHODS ： Fiber fission post porcelain-fused-cobalt-chromium alloy onlay, fiber fission post zirconium oxide onlay and gold alloy fission post onlay were used to restore 90 posterior residual crowns with low occlusogingival distance. Two weeks, 6 months and 24 months after restoration, clinical effects were evaluated based on the Modified United States Public Health Service （USPHS） Criteria. RESULTS： There were no significant differences among three kinds of fission post onlays on each evaluation item and there were no significant differences among 2 weeks, 6 months and 24 months on each evaluation item after each kind of fission post onlay restoration （ P≥ 0.05 ）. CONCLUSION ： Fiber fission post porcelain-fused-cobalt-chromium alloy onlay and fiber fission post zirconium oxide onlay showed as good clinical effect as gold alloy fission post onlay when applied for restoration of posterior residual crown with low occlusog- ingival distance. Furthermore, compared with gold alloy onlay, porcelain-fused-metal onlay and full ceramic onlay showed better esthetic effects and could meet various restoration needs.