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目的对比观察氢氧化钙和甲醛甲酚用于根尖周炎患牙根管内封药的疗效。方法选择2008年1月到2009年12月在中国医学科学院整形外科医院口腔中心就诊的135例牙根尖周炎患者的156颗患牙,随机分为A组(81颗)和B组(75颗)。步退法根管预备后分别于根管内封入氢氧化钙(A组)和甲醛甲酚(B组)进行消毒。于封药后1周、根充后1周和治疗后3个月对两组疗效进行观察并作出相应评价。结果根管封药后1周A组的有效率为92.59%,B组的有效率为78.67%,两组间差异有统计学意义(P<0.05);根管充填后1周,A、B两组的急症发生率(3.70%对12.0%)差异有统计学意义(P<0.05)。治疗后3个月A组的成功率为91.36%;B组为84.00%,两组间差异有统计学意义(P<0.05)。结论氢氧化钙用于根尖周炎患牙根管内消毒的疗效优于甲醛甲酚。
Objective To compare the efficacy of calcium hydroxide and formaldehyde cresol in the treatment of root canal endodontic drugs. Methods From January 2008 to December 2009, 156 teeth of 135 patients with periapical periodontitis treated in the Oral Center of Plastic Surgery Hospital of Chinese Academy of Medical Sciences were randomly divided into group A (81) and group B (75) ). Step-back root canal preparation after root canal were sealed with calcium hydroxide (A group) and formaldehyde cresol (B group) for disinfection. One week after sealant, one week after root filling and three months after treatment, the curative effects of both groups were observed and evaluated. Results The effective rate of group A and group B was 92.59% and 78.67% respectively at 1 week after root canal sealing, the difference was statistically significant (P <0.05) The incidence of acute illness in both groups (3.70% vs 12.0%) was statistically significant (P <0.05). Three months after treatment, the success rate of group A was 91.36%, while group B was 84.00%. The difference between the two groups was statistically significant (P <0.05). Conclusion Calcium hydroxide is superior to formaldehyde cresol in root canal disinfection of periapical periodontitis.