摘要
目的:观察注射型碘仿自固化磷酸钙(CPC)根管糊剂在体外充填根管的封闭性能。方法:62颗离体单根管牙用K锉常规法预备至40#,其中58颗随机分为2个实验组,分别用注射型碘仿CPC糊剂和氧化锌丁香油碘仿糊剂作为根管封闭剂,牙胶尖侧压法充填根管。另外4颗作为对照组。根充材料凝固后,将牙的根尖部分浸泡于2%亚甲蓝染料中6d,沿牙体长轴纵向劈开,测量根管内壁染料渗漏长度。采用团体t检验进行统计学分析。结果:注射型碘仿CPC充填组平均渗漏8.400mm,氧化锌丁香油碘仿糊剂组平均渗漏5.300mm,2组的渗漏值有显著性差异(P<0.05)。结论:碘仿CPC的体外根管封闭性不及氧化锌丁香油碘仿糊剂。
PURPOSE： To evaluate the sealing ability of an injectable iodoform-calcium phosphate cement（CPC） root canal filler in vitro. METHODS： Sixty-two single-rooted human extracted teeth were selected and root canals were instrumented to 40^# with K file .Fifty-eight teeth were randomly divided into two experimental groups. The root canals were filled by lateral condensation of gutta-purcha with iodoform-CPC or zinc-oxide-eugenol-iodoform paste used as sealer respectively. Other four teeth were used as control. When the sealer was solidified, the apical portion of tooth was soaked into 2% methylene blue for 6 days. After the tooth was longitudinally sectioned, the dye length was measured for apical microleakage.The data obtained were analysed with group t test. RESULTS： The average microleakage in iodoform-CPC group （8.400ram） was significantly larger than that in the control group （5.300mm）, P=0.021. CONCLUSIONS： We conclude that iodoform-CPC does not provide a sealing ability as good as zinc-oxide-eugenoliodoform paste in vitro.
出处
《上海口腔医学》
CAS
CSCD
2005年第6期621-623,共3页
Shanghai Journal of Stomatology
关键词
磷酸钙
根管充填:微渗漏
Calcium phosphate cement
Root canal filling
Microleakage
