根管治疗中应用空管药物消毒根管的临床效果观察

目的 :用空管药物消毒根管 ,观察其对根管的消毒效果。方法 :随机选择患急慢性根尖周炎、牙髓坏死需接受根管治疗的 3 6例患者共 3 6颗患牙为受试对象 ,随机分成实验组 18人 18颗患牙和对照组 18人 18颗患牙 ,2组均行 2次法完成根管治疗术 ,实验组于根管口暂封空管药物 ,对照组暂封甲醛甲酚合剂(formaldehydecresylol,FC) ,分别在封药前后采集细菌标本进行细菌培养鉴定。 结果 :从根管内采集并培养细菌 ,封药前 ,2组患牙根管内细菌检出率均为 10 0 % ,均包含需氧菌和厌氧菌 ;封药 1周 ,2组患牙中各有 1颗患牙检出细菌 ,其余患牙根管内未检测到细菌。结论 :根管口暂封空管药物可以有效杀灭根管系统的细菌 ,达到根管消毒的目的。

Disinfection effect of root canal with non-filling medication in root canal therapy

Objective: To observe the clinical disinfection effect of root canal with non-filling medication. Methods: 36 patients who required root canal therapy(RCT) for apical periodontitis (acute or chronic) or pulp necrosis were involved in the study.RCT was completed after two visits in both groups. Non-filling medication was used as disinfection in 18 teeth of 18 patients (experimental group) while FC in another 18 teeth of 18 patients (control group) randomly at first visit.One week later,root canal was regularly filled to complete RCT.From each case, bacteria specimens were collected and identified before sealing and filling. Results: Bacteria were detected in every specimen in both groups before sealing,which were mixture of aerobes and anaerobes.One week later,only one strain was detected in one specimen of each group. Conclusion: Non-filling medication can be used as an effective disinfection to sterilize root canal.