超声和冲洗液联合应用在根管预备中的抗菌效果  

Bactericidal effect of ultrasonic treatment combined with irrigations in root canal preparation

作　　者：黄辉[1] 罗丽华[1] 张晓希[1] 

机构地区：[1]江西南昌大学第一附属医院口腔科,330006

出　　处：《实用口腔医学杂志》2007年第1期117-119,共3页Journal of Practical Stomatology

摘　　要：目的:研究生理盐水、次氯酸钠、口泰与超声波联合应用杀灭感染根管内厌氧菌的效果。方法:将120例慢性根尖周炎患者共120颗患牙随机分为6组,每组各20颗患牙,A、B、C组均用超声法进行根管预备并分别以生理盐水、次氯酸钠、口泰作为超声冲洗液,A1、B1、C1组均用常规法手持器械根管预备并分别用生理盐水、次氯酸钠、口泰常规针筒式根管冲洗,根管预备前后分别取样进行厌氧培养。结果:A组厌氧菌减少程度明显大于A1组(P<0.01),B组厌氧菌减少程度明显大于B1组(P<0.01),C组厌氧菌减少程度明显大于C1组(P<0.01);B和C组的厌氧菌减少程度均明显大于A组(P<0.01);B和C组的厌氧菌减少程度无显著性差异(P>0.05).结论:超声波在根管灭菌方面有独特的优势,口泰与超声波联合应用可有效杀灭感染根管内厌氧菌,其抗菌效果与次氯酸钠相近似,是一种较理想的根管超声冲洗液。Objective：To study the bactericidal effect of ultrasonic technique combined with saline（ SL）, sodium hypochlorite（SH） or Koutai（KT） irrigation in root canal preparation. Methods： 120 single-rooted teeth in 120 patients with chronic periapical periodontitis were divided into six groups randomly with 20 in each group. The tooth canal in group A, B and C were prepared with ultrasonic technique. SL, SH and KT were used to irrigate in the root canals group A,B and C respectively. Routine hand instruments were used in group A1, B1 and C1. SL, SH and KT were used as irrigations in group A1, B1 and C1 respectively. 30 μJ of liquid sample was obtained from each root canal and examined for anaerobic bacteria colony counting before and after root canal preparation. Resuit：After root canal preparation the number of anaerobic bacteria colony was significantly reduced in all the 6 groups（P〈0.01 ）. The reduction of the colony number in group A, B and C was more than in group A1, B1 and C1 respectively（ P 〈 0.01 ）, that in group B or C was more than in group A（ P 〈 0.01 ）. Conclusions： Ultrasonic treatment combined with KT irrigation has potential bactericidal effect in root canal preparation.

关 键 词：根管治疗 根管冲洗剂 超声疗法 细菌 厌氧 

分 类 号：R781.05[医药卫生—口腔医学]