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目的评价氟保护漆在治疗金属烤瓷全冠（PFM）修复中活髓基牙预备后牙本质过敏症的疗效。方法选择2009年5月至2010年11月来德阳市口腔医院口腔修复科就诊的拟行PFM修复的患者124例（活髓基牙226颗）。按就诊顺序随机分为两组：试验组（65例，基牙116颗）采用氟保护漆脱敏；对照组（59例，基牙110颗）采用Gluma脱敏剂脱敏。分别于戴用PFM后即刻及3个月检测牙本质敏感状况。结果戴用PFM后即刻，试验组有效率为84．48％，对照组有效率为80．91％，二者差异无统计学意义（P〉0．05）；3个月时，试验组有效率为93．97％，明显优于对照组（84．55％）（P〈0．05）。结论氟保护漆可有效缓解PFM修复中活髓基牙预备后的敏感症状，值得临床广泛应用。

Evaluation of clinical effect of Fluor Protector on dentin hypersensitivity for full crown restoration

Objective To evaluate the effect of Fluor Protector on vital teeth postoperative hypersensitivity in PFM resto- ration. Methods A total of 226 teeth from 124 patients were divided into two groups randomly. The test group was treat- ed with Fluor Protector and the control group with Gluma desensitizer. The effect was observed 1 week and 3 months af- ter restoration. Results After 1 week, the effect rate was 84.48% for the test group, and 80.91% for the control group. There was not significant difference between two groups. After 3 months, the effect rate was 93.97% for the test group, and 84.55% for the control group, which showed significant difference between two groups. Conclusion Dentin hyper- sensitivity can be effectively released by Fluor Protectar after PFM preparation, which deserves application in clinic.