Chadha Rupali, Taneja Sonali, Kumar Mohit, Gupta Sumit
Department of Conservative Dentistry and Endodontics, I.T.S. Centre for Dental Studies and Research, Muradnagar, Ghaziabad, Uttar Pradesh, India.
J Conserv Dent. 2012 Jan;15(1):18-21. doi: 10.4103/0972-0707.92600.
To evaluate the depth of penetration of three resin-based root canal sealers into the dentinal tubules at the cervical, middle and apical third of the root canal.
Root canals of 32 extracted human mandibular premolar teeth were prepared and obturated using EndoREZ + resin-coated gutta-percha points (group A), Epiphany + Resilon points (group B), or AH Plus + gutta-percha (group C). The teeth were split longitudinally in bucco-lingual direction and viewed under scanning electron microscope. Photographs were taken at cervical, middle and apical levels for all samples and corresponding measurements were made. The data obtained was statistically analyzed using one-way ANOVA and the post-hoc Bonferroni test for inter-group comparison.
The results showed that the greatest penetration into dentinal tubules was by EndoREZ sealer (525.2 μ, 327.802 μ and 198.36 μ at cervical, middle and apical third), followed by Epiphany sealer (479.7 μ, 297.212 μ, and 182.22 μ), and the least penetration was seen with AH Plus sealer (224.2 μ, 65.419 μ, and 40.7 μ). The penetration of sealer into the dentinal tubules was statistically significant between each group at each level and between different levels within each group (P<.05).
The penetration depth of EndoREZ and Epiphany into the dentinal tubules is significantly greater than that of AH Plus.
评估三种树脂类根管封闭剂在根管颈段、中段和根尖段牙本质小管中的渗透深度。
选取32颗拔除的人下颌前磨牙，制备根管并分别使用EndoREZ + 树脂涂层牙胶尖（A组）、Epiphany + Resilon牙胶尖（B组）或AH Plus + 牙胶（C组）进行充填。将牙齿沿颊舌向纵劈，在扫描电子显微镜下观察。对所有样本在颈段、中段和根尖段拍照并进行相应测量。采用单因素方差分析和事后Bonferroni检验对所得数据进行统计学组间比较分析。
结果显示，EndoREZ封闭剂在牙本质小管中的渗透最深（在颈段、中段和根尖段分别为525.2μm、327.802μm和198.36μm），其次是Epiphany封闭剂（479.7μm、297.212μm和182.22μm），AH Plus封闭剂的渗透最浅（224.2μm、65.419μm和40.7μm）。在每个水平上，各封闭剂在牙本质小管中的渗透情况在组间以及每组内不同水平之间均具有统计学意义（P<0.05）。
EndoREZ和Epiphany在牙本质小管中的渗透深度显著大于AH Plus。
