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- Title
Performance of progressive and constant tapered instruments rotary systems at canal preparation.
- Authors
GENARI, Bruna; Silveira STELLO, Ruggiero; Soares GRECCA, Fabiana; Werner SAMUEL, Susana Maria; Mezzomo COLLARES, Fabrício; Howell DUMMER, Paul Michael
- Abstract
Objective The aim of this study was to compare the performance of two nickel-titanium rotary systems regarding the preparation time, final shape of canal, incidence of aberration, transportation, and fracture of instrument. Methods A total of 40 simulated canals in resin blocks with 30o curves and a length of 17 mm were divided randomly into two groups: preparation with ProTaper and BioRaCe systems up to F5 and BR5 respectively. Pre- and post-operative canal images were taken and superimposed in order to identify aberrations, transportation, and to take measurements of the canal width. In addition, the preparation time and instrument fractures were recorded. The data were analyzed using Student's t test. Results There is no difference (p>.05) comparing the systems regarding preparation time, canal aberration, and instrument fracture rates. The progressive tapered instruments of ProTaper prepared significantly larger canal widths in the apical third (p<.05). Conclusion Overall, both systems provided safe canal preparation, associated with few canal aberrations and instrument fractures.
- Subjects
ROOT canal treatment; DENTAL pulp cavities; TOOTH anatomy; DENTAL equipment; CYCLIC fatigue
- Publication
RGO: Revista Gaúcha de Odontologia, 2018, Vol 66, Issue 3, p225
- ISSN
0103-6971
- Publication type
Article
- DOI
10.1590/1981-863720180003000053366