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Year : 2017  |  Volume : 29  |  Issue : 2  |  Page : 101-106

Comparison of canal volume sealing capacity at different levels from the root apex using various cold and thermal obturating techniques: An in vitro study

1 Department of Conservative, Kalka Dental College, Meerut, India
2 Department of Endodontics, Institute of Dental Studies and Technology, Modinagar, Uttar Pradesh, India

Correspondence Address:
Neha Kapoor
7, Rose Avenue, Amritsar - 143 001, Punjab
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/endo.endo_27_17

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Aim: The aim of this study is to compare canal volume sealing capacity at different levels from the root apex using various cold and thermal obturating techniques. Materials and Methods: Fifty extracted human maxillary molars were collected with the mesiobuccal root curvature more than 30°. They were divided into five experimental groups (I–V) with ten teeth in each group. Biomechanical preparation was done using ProTaper rotary system. For all the groups, resin-based sealer resinoseal mixed with methylene blue dye (contrast) was used as the sealer. Groups I and II were obturated with 2% and 4% gutta-percha (GP) cones, respectively, using lateral compaction technique. Group III was obturated with 6% GP cones using single cone technique. Group IV was obturated using Thermafil system and Group V was obturated with 6% GP cones using downpack with Touch n Heat (Sybron Endo) device. All the specimens were sectioned at different levels, i.e., 3, 6, and 9 mm, from the root apex and three-dimensional apical seal was evaluated under stereomicroscope. Results: The stereomicroscopic images showed that all obturation techniques resulted in good apical seal with comparable results. Six percent single cone obturation technique resulted in poor seal (i.e., 6 and 9 mm from the root apex). The best results were shown by Thermafil endodontic obturators at all three levels from root apex. Conclusion: Although various obturation techniques resulted in achieving good three-dimensional obturation with satisfactory apical seal, only thermal systems were successful in achieving good seal at all the levels from the root apex.

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