Micro-computed Tomography Study of Oval-shaped Canals Prepared with the Self-adjusting File, Reciproc, WaveOne, and ProTaper Universal Systems

Author(s)

Versiani, Marco Aurelio ^[1] ; Leoni, Graziela Bianchi ^[1] ; Steien, Liviu ^[2] ; De-Deus, Gustavo ^[3] ; Tassani, Simone ^[4] ; Pecora, Jesus Djalma ^[1] ; de Sousa-Neto, Manoel Damiao ^[1]

Affiliation

^[1] Univ Sao Paulo, Dept Restorat Dent, Dent Sch Ribeirao Preto, Sao Paulo - Brazil

^[2] Univ Warwick, Coventry CV4 7AL, W Midlands - England

^[3] Unigranrio, Sch Dent, Rio De Janeiro - Brazil

^[4] Natl Tech Univ Athens, Inst Commun & Comp Syst, Athens - Greece

• Document type: Journal article
• Source: JOURNAL OF ENDODONTICS; v. 39, n. 8, p. 1060-1066, AUG 2013.
• Web of Science Citations: 73

Abstract

Introduction: The newly developed single-file systems claimed to be able to prepare the root canal space with only 1 instrument. The present study was designed to test the null hypothesis that there is no significant difference in the preparation of oval-shaped root canals using single- or multiple-file systems. Methods: Seventy-two single-rooted mandibular canines were matched based on similar morphologic dimensions of the root canal achieved in a micro-computed tomographic evaluation and assigned to 1 of 4 experimental groups (n = 18) according to the preparation technique (ie, Self-Adjusting File {[}ReDent-Nova, Ra'anana, Israel], WaveOne {[}Dentsply Maillefer, Ballaigues, Switzerland], Reciproc {[}VDW, Munich, Germany], and ProTaper Universal {[}Dentsply Maillefer] systems). Changes in the 2- and 3-dimensional geometric parameters were compared with preoperative values using analysis of variance and the post hoc Tukey test between groups and the paired sample t test within groups (alpha = 0.05). Results: Preparation significantly increased the analyzed parameters; the outline of the canals was larger and showed a smooth taper in all groups. Untouched areas occurred mainly on the lingual side of the middle third of the canal. Overall, a comparison between groups revealed that SAF presented the lowest, whereas WaveOne and ProTaper Universal showed the highest mean increase in most of the analyzed parameters (P < .05). Conclusions: All systems performed similarly in terms of the amount of touched dentin walls. Neither technique was capable of completely preparing the oval-shaped root canals. (AU)

• FAPESP's process: 09/09989-0 - Evaluation of biomechanical preparation, root canal obturation, retrofilling cavity, post space preparation, and quality of apical trabecular bone of teeth subjected to different treatment protocols, by means of micro-computed tomography
• Grantee: Manoel Damiao de Sousa Neto
• Support Opportunities: Regular Research Grants