Zhang Ning, Li Xin, Miao Lei-Ying, Wu Juan, Liu Chao, Yang Wei-Dong
Department of Endodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University. Nanjing 210008, Jiangsu Province, China. E-mail:
Shanghai Kou Qiang Yi Xue. 2017 Aug;26(4):395-398.
To investigate the sealing ability of biological root canal sealer iRoot SP in over-root canal filling. METHODS：After completion of root canal preparation, 48 extracted human single-canal teeth were used. The ratio of mesio-distal root canal diameter to bucco-lingual diameter was less than 0.5. The teeth were randomly divided into group A, B and C. The root canals were obturated with root canal filling agent (group A), AH Plus (group B) and iRoot SP (group C), respectively; the apical leakage was evaluated by dye penetration method and transparent teeth technique. The data were analyzed using SPSS 19.0 software package.
The depth of dye penetration in group A was significantly higher than that in group B and C (P<0.05); there was no significant difference in the depth of dye penetration between group B and group C (P>0.05).
The apical sealing ability of iRoot SP is equivalent to AH Plus in oval-root canal, both are better than that of root canal filling agent．.
研究生物性根管封闭剂iRoot SP在根管超填时的封闭能力。方法：根管预备完成后，使用48颗拔除的人单根管牙。近远中根管直径与颊舌径之比小于0.5。将牙齿随机分为A组、B组和C组。分别用根管充填剂（A组）、AH Plus（B组）和iRoot SP（C组）对根管进行充填；采用染料渗透法和透明牙技术评估根尖渗漏情况。使用SPSS 19.0软件包对数据进行分析。
A组染料渗透深度显著高于B组和C组（P<0.05）；B组和C组染料渗透深度差异无统计学意义（P>0.05）。
在椭圆形根管中，iRoot SP的根尖封闭能力与AH Plus相当，两者均优于根管充填剂。
