Original scientific paper
Comparative Evaluation of the Twisted File™ and Revo-S® Rotary Systems Using Cone Beam Computed Tomography
Carlos Menezes Aguiar
; Associate Professor, Department of Prosthetics and Oral and Facial Surgery, Faculty of Dentistry, Federal University of Pernambuco, Recife,
Camille Gomes Faria
; Undergraduate Student, Faculty of Dentistry, Federal University of Pernambuco, Recife, Brazil
Andrea Cruz Camara
; Department of Prosthetics and Oral and Facial Surgery, Faculty of Dentistry, Federal University of Pernambuco, Recife, Brazil
Marco Frazao
; Private Practice, Recife, Brazil
Abstract
Purpose: The present study set out to determine the centering ability of the Twisted File™ rotary system compared with the Revo-S® rotary system by means of the cone beam computed tomography. Material and methods: Forty mesiobuccal canals of human maxillary first molars the curvature of which ranged from 25° to 30° were divided into two groups with 20 root canals each according to the instruments used: Group 1, Twisted File™ rotary system; Group 2, Revo-S® rotary system. All teeth were scanned by cone beam computed tomography to determine the root canal shape before and after instrumentation. The images were captured digitally for further analysis using the Image Tools Software. Canal centering ratio was calculated. The results were statistically analyzed using the t test and the Mann-Whitney test. A level of significance of .05 was adopted. Results: The perfect centering ability was not observed in either rotary system, and there were no statistically significant differences (p > 0.05) between the two groups in terms of centering ability. Conclusion: None of the instruments evaluated in this study were totally effective in performing biomechanical preparation of the root canals, because each of them produced canal deviation.
Keywords
Cone-Beam Computed Tomography; Dental Instruments; Endodontics; Root Canal Preparation
Hrčak ID:
86881
URI
Publication date:
24.9.2012.
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