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目的:研究聚合瓷嵌体修复活髓后牙大面积牙体缺损(Big dentin defect,BDD)中的临床疗效。方法:从2009年6月到2011年6月,于我院牙科就诊病患中,后牙的牙体缺损大于1个牙尖者有80例,共87颗牙齿。以数字法随机分成治疗组(41例,46颗)及对照组(39例,43颗)。对照组以高嵌体方案治疗,治疗组以聚合瓷嵌体方案治疗。对比两组一周以及一年后修复体评价情况。结果:治疗一周后,治疗组在美观方面显著优于对照组,差异有统计学意义(u=2.038,P<0.05)。而两组对比术后敏感以及牙周状况等数据,差异均无统计学意义(u=1.132,1.389,均P<0.05)。治疗一年后,治疗组在修复体折裂以及美观等方面显著优于对照组。差异有统计学意义(u=3.138,2.874,均P<0.05)。两组在继发龋和边缘着色,邻接以及肩台适合和牙周状况等方面对比,差异均无统计学意义(u=1.132,1.374,1.454,1.268,1.366,均P<0.05)。结论:聚合瓷嵌体对于活髓后牙BDD的修复效果较为显著,可较大程度恢复病患牙体功能,减少继发龋的发生率。不易折裂又更加美观,值得临床推荐。
Objective: To study the clinical efficacy of polymeric inlays in repairing large dentin defect (BDD) of vital pulp. METHODS: From June 2009 to June 2011, 80 patients with dental defects of more than 1 tooth tip were included in our hospital for dental treatment. There were 87 teeth in total. The patients were randomly divided into treatment group (41 cases, 46 cases) and control group (39 cases, 43 cases). The control group was treated with high inlay protocol, and the treatment group was treated with the polymer-inlay inlay scheme. Comparison of the two groups after a week and a year after the prosthesis evaluation. Results: After one week of treatment, the treatment group was significantly better than the control group in appearance, the difference was statistically significant (u = 2.038, P <0.05). There was no significant difference between the two groups in postoperative sensitivity and periodontal status (u = 1.132,1.389, all P <0.05). After one year of treatment, the treatment group was significantly better than the control group in fracture healing and aesthetic appearance. The difference was statistically significant (u = 3.138,2.874, all P <0.05). There was no significant difference between the two groups in secondary caries and marginal coloring, contiguity, shoulder suitability and periodontal status (u = 1.132,1.374,1.454,1.268,1.366, all P <0.05). CONCLUSION: Polycrystalline inlays are effective in repairing BDD of vital pulp, which can restore the dental function of patients and reduce the incidence of secondary caries. Not easy to break and more beautiful, it is clinically recommended.