Akansha Garg1, Ajay Nagpal2, Shashit Shetty3, Sunil Kumar4, Kamal Krishan Singh5, Amit Garg2. 1. Post graduate Student, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital , Mathura, Uttar Pradesh, India . 2. Reader, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital , Mathura, Uttar Pradesh, India . 3. Professor and Head, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital , Mathura, Uttar Pradesh, India . 4. Assistant Professor, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital , Mathura, Uttar Pradesh, India . 5. Post Graduate Student, Department of Conservative Dentistry & Endodontics, Kanti Devi Dental College and Hospital , Mathura, Uttar Pradesh, India .
Abstract
INTRODUCTION: To evaluate and compare the amount of time required by three rotary NiTi instruments in removing gutta-percha from root canal during retreatment with hand file as control. MATERIALS AND METHODS: Eighty human mandibular premolars with single straight root canals were prepared and obturated by cold lateral condensation with gutta-percha and AH Plus sealer. After two weeks, the 80 teeth were divided into one control group and 3 retreatment groups (n = 20 each). Gutta-percha was removed using H-files, the D-RaCe, or the Mtwo or the R-Endo retreatment systems. Retreatment time was calculated using stopwatch. RESULTS: D-RaCe and Mtwo required significantly less time than R-Endo and hand file. Hand file took maximum time, which was significantly slower than all groups. However, D-RaCe and Mtwo retreatment time was statistically insignificant. CONCLUSION: D-RaCe and Mtwo remove gutta-percha faster than R-Endo and Hand files.
INTRODUCTION: To evaluate and compare the amount of time required by three rotary NiTi instruments in removing gutta-percha from root canal during retreatment with hand file as control. MATERIALS AND METHODS: Eighty human mandibular premolars with single straight root canals were prepared and obturated by cold lateral condensation with gutta-percha and AH Plus sealer. After two weeks, the 80 teeth were divided into one control group and 3 retreatment groups (n = 20 each). Gutta-percha was removed using H-files, the D-RaCe, or the Mtwo or the R-Endo retreatment systems. Retreatment time was calculated using stopwatch. RESULTS: D-RaCe and Mtwo required significantly less time than R-Endo and hand file. Hand file took maximum time, which was significantly slower than all groups. However, D-RaCe and Mtwo retreatment time was statistically insignificant. CONCLUSION: D-RaCe and Mtwo remove gutta-percha faster than R-Endo and Hand files.
Authors: Jörg F Schirrmeister; Karl-Thomas Wrbas; Felix H Schneider; Markus J Altenburger; Elmar Hellwig Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Endod Date: 2005-11-02
Authors: A Mollo; G Botti; N Prinicipi Goldoni; E Randellini; R Paragliola; M Chazine; H F Ounsi; S Grandini Journal: Int Endod J Date: 2011-08-16 Impact factor: 5.264