Evaluation of apical microleakage of teeth sealed with four different root canal sealers

Abstract

Objectives:to compare the apical sealing ability of four root canal sealers. Materials and methods: forty extracted human maxillary canines were instrumented 1 mm short of the anatomical apex and randomly assigned to four groups (n=10), according to the root canal sealer used for obturation: Endofill, AH Plus, EndoREZ and Epiphany. Root canals were obturated with guttapercha points, except for the Epiphany group, in which resin points (Resilon) were used. The teeth were immersed in India ink for seven days and clarified using methyl salicylate. The extent of apical dye penetration was measured with a measuroscope in all aspects of the canal.Results:AH Plus (0.02 mm ± 0.07), Epiphany (0.00 mm ± 0.00) and EndoREZ (0.32 mm ± 0.62) did not differ statistically to each other (p>0.01). EndoFill presented the highest dye penetration mean (0.83 mm ± 0.73) and was statistically different from the other sealers (p<0.01).Conclusions:the resin-based root canal sealers presented lesser apical microleakage than the zinc oxide and eugenol based sealer. No statistical differences were observed among resin based sealers.

Coronal sealing ability of different sealers on teeth obturation and the effectiveness of two different obturation techniques

“…Studies showed that these findings may possibly be attributed to the fact that resin based sealers has low contraction and solubility in comparison with ZOEbased in addition to it has resin components in their formulations, which improve their adherence to the intra canal dentin walls and is an important factor for leakage prevention. 21,22 About obturation techniques, groups of obtura II showed significantly less coronal leakage in comparison to groups of cold lateral compaction especially when AH26 used as a sealer. this result some what in agreement with some authors studies 23,24 as they showed that the cold lateral compaction show higher leakage than thermoplasticized technique.…”

Effectiveness of gutta-percha and Resilon in filling lateral root canals using thermomechanical technique

“…The filling technique and the properties of filling material are important factors that influence the threedimensional filling of the root canal system [7][8][9] .…”

Effectiveness of gutta-percha and Resilon in filling lateral root canals using the Obtura II system

“…4,5 The filling technique and the properties of the material employed are the two essential factors for three-dimensional filling of the root canal system. [6][7][8] It has been suggested that the ideal root canal filling should consist of a sufficient amount of gutta-percha covered by a thin layer of a sealer. 9,10 In this regard, several filling techniques employing thermoplastic guttapercha have been evaluated for their effectiveness in filling irregular or lateral root canals.…”

“…8,19,20 Resilon (Resilon Research LLC, Madison, USA), a synthetic polymer-based material, has been proposed as an alternative to gutta-percha. 7 The thermoplastic properties of Resilon were studied by Miner et al, 10 who demonstrated that Resilon and gutta-percha have similar melting points of approximately 60 °C. Tanomaru-Filho et al 20 evaluated the thermoplastic ability of different gutta-percha cones in comparison with that of Resilon, and they concluded that the latter presented better thermoplasticity than gutta-percha did.…”

“…However, few studies have focused on comparing the effectiveness of gutta-percha and Resilon without the use of an endodontic sealer in this technique. 7,8 The aim of the present study was to evaluate the ability of two types of gutta-percha and Resilon to fill simulated lateral canals with the Obtura II system.…”