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Year : 2012  |  Volume : 1  |  Issue : 2  |  Page : 116-119

Endodontic retreatment: Rotary versus hand instrumentation: An in vitro study

1 Department of Conservative Dentistry, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
2 Department of Conservative Dentistry, MNR Institute of Dental Sciences, Hyderabad, Andhra Pradesh, India

Correspondence Address:
Sujana Varri
Department of Conservative Dentistry, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2277-8632.98358

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Objective: The present study has probed the effectiveness of nickel titanium rotary instruments (ProTaper) and hand instruments in the retrieval of gutta-percha and sealer using Hemo-De as a solvent. Materials and Methods: Thirty extracted, single-rooted anterior teeth were instrumented and obturated with gutta-percha and zinc oxide sealer using the lateral condensation method. They were distributed into 3 groups of 10 each. Retreatment for group A was done using NiTi ProTaper alone, for group B using ProTaper and Hemo-De (d-limonene), and for group C using hand files with Hemo-De. The teeth were then split longitudinally into two halves. The remaining gutta-percha or sealer on the root canal wall in the cervical, middle, apical thirds, and the whole canals was visually scored with the aid of a stereo microscope. Results: The results have showed that the mean scores in groups A and B were generally lower than those for group C. Mean scores of the apical thirds tended to be higher (worse) than the middle and cervical thirds except in group A. Conclusion: ProTaper with or without Hemo-De seems to be a viable alternative retreatment method.

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