复合树脂嵌体修复乳磨牙缺损的临床观察

Composite resin inlay in the restoration of enamel defects in deciduous molars

目的观察复合树脂嵌体修复乳磨牙牙体缺损的临床效果。方法对乳磨牙牙体缺损分别采用复合树脂嵌体技术和复合树脂直接充填修复，复合树脂嵌体技术组99例，复合树脂直接充填修复104例；1年后复诊检查，评价标准采用改良USPHS评价标准。结果复合树脂嵌体技术组的临床成功率在固位情况（94．9％）、边缘密合度（92．9％）、继发龋（90．9％）、牙龈指数（92．9％）、牙髓反应（94．9％）、磨耗程度（88．9％）指标上高于复合树脂直接充填修复组，并且差异有显著性（P〈0．05）。在色泽协调性指标上，临床成功率（87．9％）虽高于复合树脂直接充填修复组，但统计学上差异无显著性（P〉0．05）。结论复合树脂嵌体修复术组临床效果优于复合树脂直接充填组。

Objective To investigate the efficacy of composite resin inlay in the restoration of enamel defects in deciduous molars. Methods 203 deciduous molars with enamel defects were randomly assigned to receive composite resin inlay （ 99 molars, resin-inlay group ）, or direct composite resin filling （ 104 molars, resin-filling group ）. All the molars were examined one year after restoration; and the modified USPHS-criteria was used for assessment. Results The clinical success rate differed significantly between the resin-inlay group and the resin-filling group in retention, marginal adaptation, secondary caries, gingival index, reaction of the pulp, and abrasion level（ 94.9%, 92.9%, 90.9%, 92.9%, 94.9%, and 88.9% in the former groul~ P〈 0.05 ）. Although the clinical success rate of color match was higher in the group with resin-inlay （ 87.9% ） than in the group with resin-filling, but there was no significant difference between the two groups （ P 〉 0.05 ）. Conclusion Composite resin inlay is more efficacious than direct composite resin filling.