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目的:采用Mtwo根管预备系统进行根管预备,观察约诊间痛的情况,探讨发生约诊间痛的影响因素。方法:选取临床因龋病或隐裂引起牙髓炎的患者共97例,其中男37例,女60例,年龄15～62岁。随机分为2组,机动组采用Mtwo根管预备系统,手动组采用不锈钢K锉预备根管。比较2组术后患牙约诊间痛的情况。采用SPSS13.0软件包中的非参数Mann-Whitney U检验进行2组间疼痛情况比较,采用Fisher精确χ2检验比较2组约诊间痛发生率。结果:采用Mtwo机动预备系统的约诊间痛发生率显著低于K锉常规法(P=0.027)。结论:与手动不锈钢K锉相比,Mtwo机动根管预备系统可以降低根管预备后约诊间疼痛的发生率。
Objective: To use Mtwo root canal preparation system for root canal preparation, to observe the situation about the pain in the clinic and to discuss the influencing factors about the pain in the clinic. Methods: A total of 97 patients with clinical pulpitis caused by dental caries or occlusion were selected, including 37 males and 60 females, aged 15-62 years. Randomly divided into two groups, motor group Mtwo root canal preparation system, manual group using stainless steel K file preparation root canal. Comparing the two groups of patients with dental pain about the situation. The non-parametric Mann-Whitney U test in the SPSS 13.0 software package was used to compare the pain between the two groups. Fisher’s exact χ 2 test was used to compare the pain-related rates between the two groups. Results: The incidence of pain at the clinic between Mtwo maneuver system was significantly lower than that of K file (P = 0.027). CONCLUSIONS: Compared with manual stainless steel K-files, the Mtwo motorized root canal preparation system can reduce the incidence of clinically painful complications after root canal preparation.