目的：评价含质量分数为8%精氨酸和碳酸钙脱敏抛光膏治疗超声龈下刮治后根面牙本质敏感症的疗效。方法 依据石川修二评定标准冷空气刺激评分，将超声龈下刮治术后1周内至少2颗前牙或前磨牙出现2~3度的根面牙本质敏感的82名患者随机分为2组，试验组40名（用含质量分数为8%精氨酸和碳酸钙脱敏抛光膏），对照组42名（用不含脱敏剂的普通抛光膏），进行脱敏治疗，观察即刻脱敏效果。结果 82名受试者参加并完成了治疗。试验组即刻冷空气刺激评分为1.34±0.48，对照组的即刻冷空气刺激评分为2.24±0.55，两组疗效差异有统计学意义（P<0.05）。结论含质量分数为8%精氨酸和碳酸钙脱敏抛光膏，对超声龈下刮治后根面牙本质敏感症有较好的疗效。%Objective The aim of this study was to observe the clinical effect of an in-office desensitizing polishing paste containing 8% arginine and calcium carbonate on the treatment of root-dentin hypersensitivity after subgingival scaling with ultrasonic instrument. Methods This was a randomized double-blind controlled, clinical study. The 82 subjects who presented at least two hypersensitive teeth either front teeth or premolars with an air blast hypersensitivity scores of 2 or 3 according to schiff cold air senditivity scale after subgingival scaling with ultrasonic instrument in one week were randomly stratified into two groups. 40 subjects in test group were treated with an in-office desensitizing polising paste containing 8% arginine and calcium carbonate. 42 subjects in control group were treated with the proxyt polishing paste. The effect of desensitization was evaluated immediately after treatment. Results Eighty-two subjects participated and completed in this treatment. The average air blast hypersensitivity score of test paste was 1.34±0.48. The average air blast hypersensitivity score of control paste was 2.24±0.55. There was significant difference between control and test group(P<0.05). Conclusion The in-office desensitizing polishing paste containing 8% arginine and calcium carbonate showed good therapeutic efficacy for patients with root-dentin hypersensitivity after subgingival scaling with ultrasonic instruments.
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