常温流动牙胶Guttaflow充填根管密合性的体外评价  

Evaluation of sealing of root canal filling with Guttaflow in vitro

作　　者：唐志娟[1] 吴大明[1] 张光东[1] 刘卫红[1] 

机构地区：[1]南京医科大学口腔医学研究所南京医科大学口腔医学院牙体牙髓科,南京210029

出　　处：《口腔医学》2010年第12期740-743,共4页Stomatology

摘　　要：目的体外评价常温流动牙胶(Guttaflow)充填根管的致密性。方法选择60个单根管下颌第一前磨牙,使用ProTaper冠向下法预备根管,然后随机分为3组进行根管充填。组1:以Guttaflow(加06锥度单牙胶尖)根管充填;组2:连续波热牙胶根管充填;组3:冷侧压法根管充填。然后在距根尖狭窄2、4、6、8mm处垂直于牙体长轴切开牙体,体视显微镜下观察切片中根管充填的情况,并采集图像,利用图像分析软件计算根管充填物中牙胶面积的百分比(PGP)。结果在距根尖2mm和4mm处Guttaflow组的PGP明显高于热牙胶组和冷侧压组P<0.05),而热牙胶组和冷侧压组无显著差异(P>0.05)。在距根尖6mm和8mm处,Guttaflow组与热牙胶组无显著差异(P>0.05),但两者都高于冷侧压组P<0.05)。结论 Guttaflow根管充填法充填具有很好的密合性。Objective To evaluate the sealing of root canal filling with Guttaflow system in vitro.Methods 60 freshly extracted mandibulars first premolar with single root were collected and their root canals were prepared with ProTaper Ni-Ti rotary system using the crown-down technique. The teeth were randomly divided into 3 groups and treated as follows：group 1： root canals were obturated with Guttaflow and a single 0.06 tapered gutta-percha point;group 2：root canals were obturated by continuous wave technique;group 3： root canals were obturated by cold lateral compaction technique. Then roots were sectioned at 2,4,6,8 mm from apical foramen. All sections were observed under a stereomicroscope. The percentage of gutta-percha-filled area （PGP） was calculated. Results At the 2 m,4 m levels from apex,PGP of Guttaflow group was higher than that of continuous-wave group and that of cold lateral compaction group（P0.05）,but there were no significant differences between PGP of continuous-wave group and that of cold lateral compaction group（P0.05） . At the 6mm,8mm levels,there were no significant differences between PGP of Guttaflow group and that of continuous wave group,but PGP of both were higher than that of cold lateral compaction group. Conclusions Guttaflow had higher quality of sealing in root canal filling.

关 键 词：GUTTAFLOW 根管治疗 密合性 

分 类 号：R781.05[医药卫生—口腔医学]