根管治疗清除感染根管内细菌能力的研究  

Study on the ability of root canal therapy to remove bacteria from infected root canals

作　　者：李先凤 LI Xian-feng(Department of Stomatology, Hanyang Hospital of Wuhan, Hubei wuhan 430050,Chin)

机构地区：[1]武汉市汉阳医院口腔科,湖北武汉430050

出　　处：《全科口腔医学电子杂志》2018年第13期6-8,共3页Electronic Journal of General Stomatology

摘　　要：目的比较两种根管治疗方法清除慢性根尖周炎患牙根管内细菌的能力。方法选择来我院牙科就诊的慢性根尖周炎患者71例共71颗牙,进行数字随机分组,分为A组(一次法组)及B组(两次法组),A组35例,B组36例。A组患者进行根管预备后,干燥根管,即刻充填根管。B组患者根管预备后在根管内封Ca(OH)2糊剂,1周后取出根管内的糊剂,完成根管充填。比较两组患者预备前后根管内细菌数量变化,以及预后后细菌种类变化情况。结果两组患者预备前根管内细菌数量比较差异无统计学意义(P>0.05),预备后两组患者比较,G+厌氧菌细菌数量无明显变化(P>0.05),G-厌氧菌细菌数量减少(P<0.05)。两种患者预后前后比较,细菌数量均显著减少,差异有显著性统计学意义(P<0.01),两组患者预备后共发现以下细菌种类,口腔链球菌、嗜酸乳杆菌、粪肠球菌、内氏放线菌、厌氧消化链球菌、具核梭杆菌、牙龈单胞菌、中间普雷沃菌,两组患者各细菌种类比较,差异无统计学意义(P>0.05)。结论与一次法疗效比较,根管治疗两次法并不能明显降低感染根管内细菌数量和种类。Objective To compare the ability of two root canal treatments to remove bacteria from root canals of patients with chronic periapical periodontitis.Methods 71 patients with chronicperiapicalperiodontitis were randomly divided into two groups group a （one -time group） and group b （two -time group）, group A（35 cases） and group B （36 cases）. After root canal preparation in group A, the rootcanals were dried and filled immediately. In group B, Ca（OH）2 paste was sealed in the root canal after root canal preparation. after 1 week, the paste in the root canal was taken out to complete root canalfilling. The numberof bacteria in root canals and the change of bacteria species after prognosis were compared between the two groups.Results There was no significant difference in the number of bacteria in root canalbetween the two groups （P〉0.05）. there was no significant difference in the number of G ＋ anaerobic bacteria between the two groups （P〉0.05）, and the number of G - anaerobic bacteria decreased （P〈0.05）. The number of bacteria was significantly decreased before and after the prognosis of the two groups （P〈0.01）. the following bacterialspecies were found in the two groups after the preparation, oral streptococcus, lactobacillus acidophilus, enterococcus faecalis, actinomyces neii, anaerobic digestion streptococcus, Fusobacteriumnucleatum, Aeromonas gingivalis, intermediate Prevost bacteria. there was no significant difference between the two groups （P〉0.05）.Conclusion Compared with one-time root canal therapy, two-timeroot canal therapy can not significantly reduce the number and species of bacteria in infected root canals.

关 键 词：慢性根尖周炎 根管治疗 细菌 

分 类 号：R781.3[医药卫生—口腔医学]