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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/16666

Title: Efficacy of Two Rotary NiTi Instruments in the Removal of Gutta-Percha During Root Canal Retreatment.
Authors: Saad, A.
Al Hadlaq, S.
Al Katheeri, N.
Keywords: Gutta-percha; hand Hedstrom files; K3; protaper; root canal treatment; rotary NiTi instruments
Issue Date: 2007
Publisher: Elsevier B.V.
Citation: Journal of Endodontics: 33 (1); 38-41
Abstract: The aim of this study was to evaluate the efficacy of ProTaper and K3 in the removal of gutta-percha during root canal retreatment in comparison with hand Hedstrom files. Time of gutta-percha removal and amount of apically extruded debris were also evaluated. Sixty extracted single-rooted anterior teeth and premolars were instrumented and obturated with laterally condensed gutta-percha technique. The teeth were cleared and randomly divided into three groups of 20 teeth each. The roots were split longitudinally, digital images were created using a scanner, and the areas of remaining filling material were traced using Ulead Photoimpact7 then calculated using SigmaScan software. The results indicated that the two rotary nickel-titanium instruments left significantly less remaining filling material than hand instruments (p < 0.001). The ProTaper and K3 required significantly less time for filling material removal than hand instruments (p < 0.001). There was no statistically significant difference among the three techniques regarding the amount of apically extruded debris (p = 0.159). In conclusion, ProTaper and K3 were found to be effective and faster in removing gutta-percha.
URI: http://hdl.handle.net/123456789/16666
ISSN: 0099-2399
Appears in Collections:College of Dentistry

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