Objective To investigate the effect of general irrigation and ultrasonic irrigation in single-visit root canal treatment for fistula type chronic apical periodontitis. Methods 80 patients with fistula type chronic apical periodontitis (92 teeth) scheduled for single-visit root canal treatment in our clinic from November 2010 to September 2016 were divided into the control group (40 cases, 47 teeth) and the observation group (40 cases, 45 teeth) according to the random number table method. The control group was treated with general irrigation, while the observation group was treated with ultrasonic irrigation. The pain of diseased teeth andclinical efficacy of the two groups were compared and analyzed. Results The incidence of pain of diseased teeth after root filling in the observation group received ultrasonic irrigation was 27.5％, lower than 57.5％ in the control group, with statistically significant difference (P<0.05). The total effective rate of the observation group after treatment was 97.5％, higher than 67.5％ of the control group, with statistically significant difference (P<0.05). Conclusions The application of ultrasonic irrigation in single-visit root canal treatment for fistula type chronic apical periodontitis can effectively improve the effect of clinical treatment, completely eliminate the blind spots in the root canal preparation, kill the root canal bacteria, reduce the damage to the periapical tissue, and reduce the postoperative pain.%目的 探讨瘘管型慢性根尖周炎患者采用普通冲洗与超声冲洗方式对一次性根管治疗的效果.方法 选择本诊所2010年11月至2016年9月期间收治的80例(92颗牙)瘘管型慢性根尖周炎一次性根管治疗患者,按照随机数字表法将其分为对照组(40例、47颗牙)和观察组(40例、45颗牙),对照组采用普通冲洗,观察组采用超声冲洗方式,并对比分析其患牙疼痛与临床疗效.结果 观察组接受超声冲洗后患牙根充后疼痛发生率低于对照组(27.5％ 比57.5％),差异有统计学意义(P<0.05).观察组患者接受治疗后的临床总有效率高于对照组(97.5％ 比67.5％),差异有统计学意义(P<0.05).结论 瘘管型慢性根尖周炎一次性根管治疗中应用超声冲洗方式能够有效提高临床治疗效果,彻底清除根管预备中的盲区,杀灭根管细菌,减少对尖周组织损伤,降低术后疼痛.
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