摘要
本文对100个离体牙作了根管充填研究,结果表明,热牙胶注射法与侧压法充填的效果在X线片上无明显差别,但染液渗漏检查和扫描电镜观察,前者的根尖封闭能力和边缘密合度显著优于后者。本文还对热牙胶注射充填的程度与一些因素的关系作了分析与讨论。
One hundred extracted single-rooted human teeth were used in this study.After canalspreparation,70 teeth were filled using thermoplasticized gutta-percha injection technique,with and without sealer,the other thirty canals were obturated with lateral condensationof gutta-percha points and sealer.All teeth were examined by X-ray and shown a comp-letely obturation effect,no obvious differences were observed between both filling techni-ques on radiography.But using 2% methylene blue dye as a tracer and examined by SEM.the sealing guality between canal walls and fillings of injection technique was muchbetter than lateral condensation.This study also found a close relation between the level of thermoplasticized gutta-perchafillings and the position of needle in canal,and the diameter of apical foramen,and withor without scaler,but no differences were noticed whether the injection necdle up or down.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
1989年第1期5-9,共5页
West China Journal of Stomatology
