Journal of Research in Dental and Maxillofacial Sciences

en Marginal Adaptation of GuttaFlow 2, GuttaFlow Bioseal, and AH Plus in the Apical Third of Human Teeth Obturated by the Single-Cone Technique Endodontics Endodontics Original article Original article <div style="text-align: justify;">Background and Aim: This study compared the marginal adaptation of GuttaFlow 2, GuttaFlow Bioseal, and AH Plus in the apical third of human single-canal teeth obturated by the single-cone technique.    Materials and Methods: This in vitro study evaluated 51 eligible extracted single-canal maxillary incisors. The teeth underwent biomechanical preparation with BioRaCe rotary system to #40/4%, and were then randomly divided into 3 experimental groups (n=17) of GuttaFlow 2, GuttaFlow Bioseal, and AH Plus. The canals were rinsed with 17% EDTA for 1 minute, 5.25% NaOCl for 30 seconds, and 2 mL of distilled water for smear layer removal, and were obturated with the single-cone obturation technique. The roots were then transversely sectioned at 3 and 6 mm from the apex, and the gap at the root filling material-canal wall interface was measured under a scanning electron microscope (SEM). Data were analyzed with the Kruskal-Wallis and Mann-Whitney U tests (alpha=0.05).    Results: At 3 mm distance from the apex, the mean gap size in the GuttaFlow Bioseal group (12.65±4.919 µm) was significantly larger than that in GuttaFlow (7.7±2.969 µm) and AH Plus (6.89±4.58 µm) groups (P<0.05), but no significant difference was detected at 6 mm from the apex among the three groups (P=0.121). Conclusion: Under the limitations of this in vitro study, the results indicated that GuttaFlow Bioseal had poorer marginal adaptation than AH Plus and GuttaFlow at 3 mm from the apex; however, marginal adaptation of sealers was not significantly different at 6 mm from the apex.  </div> Dental Marginal Adaptation, Epoxy Resin-Based Root Canal Sealer, GuttaFlow, Root Canal Therapy 107 113 http://jrdms.dentaliau.ac.ir/browse.php?a_code=A-10-2868-1&slc_lang=en&sid=1 Sayeh Abbasnejad Sayeh.abbasnejad@gmail.com 100319475328460016913 100319475328460016913 Yes Department of Endodontics, Dental School, Islamic Azad University of Medical Sciences, Tehran, Iran Faezeh Abbasi 100319475328460016914 100319475328460016914 No Department of Endodontics, Dental School, Islamic Azad University of Medical Sciences, Tehran, Iran Solmaz Araghi 100319475328460016915 100319475328460016915 No Department of Endodontics, Dental School, Islamic Azad University of Medical Sciences, Tehran, Iran Sohrab Tour Savadkouhi 100319475328460016916 100319475328460016916 No Department of Endodontics, Dental School, Islamic Azad University of Medical Sciences, Tehran, Iran