摘要
目的:评价4种根管充填材料的根管密封性能,分析其影响因素。方法:收集新鲜拔除的人完整前牙40颗,随机分成4组,每组10颗牙,分别用氧化锌丁香油糊剂、Vitapex糊剂、Cortisomol糊剂、AH—Plus糊剂加牙胶尖以侧压法进行根管充填。每组随机选5颗牙经染色后行微渗漏长度测量;男5颗牙行扫描电镜测量根管壁与根管糊剂间微缝隙宽度。结果:氧化锌丁香油糊剂组、Vitapex糊剂组、Cortisomol糊剂组及AH—Plus糊剂组微渗漏均值分别为(3.04±1.30)、(0.74±0.49)、(0.87±0.44)、(0.60±0.26)mm,微缝隙均值分别为(11.70±5.95)、(3.05±2.75)、(1.55±1.75)、(1.95±1.00)μm,氧化锌丁香油糊剂组微渗漏和微缝隙两项均值显著高于其他各组(P<0.05),其余各组间均值比较无统计学意义。结论:氧化锌丁香油糊剂作为根管糊剂逐渐被淘汰,急需我国自行研制新型根管充填材料。
Objective: To estimate the blocking efficacy of 4 kinds of root canal blocking materials and to analyze the influence factors. Methods: Forty freshly extracted incisor teeth were randomly divided into 4 groups, each with 10 teeth, they were then filled with gutta-percha point of the same kind plus Zinc Oxide-engenol paste, Vitapes paste, Cortisomol paste and AH-Plus paste respectively in lateral pressure way. The microeffusion was measured in 5 stained teeth of each group. The micro-chink between filling materials and the wall of root canal of the other 5 teeth was measured with scanning electron microscope. Results: The apex microeffusion and micro-chink of Zinc Oxide-engenol group were significantly larger than that of the other 3 groups. Conclusion: Zinc Oxide-engenol paste should hot be used as a root canal blocking material. It is urgent to develop new root canal blocking materials with better apex blocking efficacy and lower prices in our country.
出处
《第二军医大学学报》
CAS
CSCD
北大核心
2003年第4期434-436,共3页
Academic Journal of Second Military Medical University
