Caracterização das dimensões da aresta lateral de corte e do núcleo dos instrumentos Mtwo®, ProTaper®, Wizard Navigator® e BioRace®
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2015-03-10
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Universidade Federal de Goiás
Resumo
Purpose: to determine flute-to-shank ratio of rotatory nickel-titanium instruments Mtwo®
#30/.05, ProTaper® #30/.09, Wizard Navigator® #30/.06 and BioRace® 35/.04. Material
and methods: Instruments’ diameter were measured with a digital caliper in the first five
flutes and abraded longitudinally by a diamond disk until instrument half diameter was
achieved in flutes region. The samples were then fixed in stubs and SEM images were
performed at 60X magnification. The flutes and shanks areas were measured, and flute-toshank
ratio was achieved using software AxioVision®. Statistical analysis was performed by
ANOVA and Tukey’s Test for comparison between groups. Results: There was significant
statistical difference for flutes areas. Mtwo® #30/.05 had the higher shank areas and was
significantly different from the other instruments, except for Wizard Navigator #30/.06 ate
the second flute site. Flute-to-shank ratio showed a 3-28% variation. Conclusions: Flutes
dimensions were lower than shanks’. Wizard Navigator® #30/.05 had lower flute-to-shank
ratio than other files.
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Citação
BRITO, A. P. P. Caracterização das dimensões da aresta lateral de corte e do núcleo dos instrumentos Mtwo®, ProTaper®, Wizard Navigator® e BioRace®. 2015. 23 f. Dissertação (Mestrado em Odontologia) - Universidade Federal de Goiás, Goiânia, 2015.