慢性根尖周炎应用氢氧化钙根管内封药的临床疗效观察

目的:观察慢性根尖周炎患牙用氢氧化钙根管内封药的临床疗效。方法:选择100例慢性根尖周病变患者随机分为实验组和对照组各50例;观察组用氢氧化钙做根管内封药;对照组用甲醛甲酚做根管内封药,观察术后1周的临床及X线片表现,并分析评定临床疗效。结果:术后1周有效率比较,观察组为96%,对照组为86%;两组间疗效差异具有统计学意义。结论:氢氧化钙是较理想的根管内消毒剂。

The Clinical Efficacy Of Calcium Hydroxide as Intracanal Medication of Teeth With Chronic Apical Periodontitis

Objective:To study the curative effect of calcium hydroxide as intracanal medication of teeth with Chronic apical pefiodontitis.Methods:100 infected cases with Chronic apical pefiodontitis were divided into observition group and control group randomly,each group including 50 cases.In the observation group calcium hydroxide was placed in the instrumented root canals of 50 teeth;Formo cresol(FC)was used for intracanal dressing in the canals of other 50 cases.The curative effects were ob- served 1 week after the final obturations and evaluated based on radiographic and clinical results using the periapical index(PAI). Results:The healing and incompletely healing rates in calcium hydroxided ressing group were 96%,those of the Formo cresol dressing group were 86%.There was statistically significant difference between the groups(P<0.05).Conclusions:Calcium hy- droxide is an ideal intracanal medicament.