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目的:观察排龈在龈下楔状缺损充填修复中的临床疗效。方法:选择36例120颗龈下楔状缺损患牙,随机分为实验组和对照组,每组60颗,实验组使用排龈线排龈后Z350复合树脂修复,对照组直接树脂修复,随访2年。追踪观察实验组和对照组充填物脱落情况和边缘密合状况。结果:充填治疗后0.5年两组的充填物脱落发生率无统计学差异(P<0.01)。在治疗1、2年后,两组充填物脱落发生率和边缘密合性方面有统计差异学(P<0.05),实验组疗效优于对照组。结论:龈下楔状缺损修复中应用排龈技术能有效提高临床治疗效果。
Objective: To observe the curative effect of gingival retraction in filling and repairing subgingival wedge defects. Methods: Totally 36 cases of subgingival wedge-shaped defects were selected and randomly divided into experimental group and control group, with 60 in each group. The experimental group was treated with Z350 composite resin for gingival retraction, while the control group for direct resin repair, followed up for 2 year. Follow-up observation of the experimental group and the control group off the filling and edge of the situation. Results: There was no significant difference in the shedding of filling between the two groups (P <0.01). There was statistical difference (P <0.05) in the incidence of shedding and margin adhesion between the two groups after 1 and 2 years of treatment, and the curative effect of the experimental group was better than that of the control group. Conclusion: The application of gingival retraction in subgingival wedge-shaped defect repair can effectively improve the clinical effect.