Cutting Ability of Nickel-titanium rotary systems protaper, mtwo and k3

• Autor(a) principal: Moraes, Sergio Herrero [UNESP]
• Data de Publicação: 2012
• Outros Autores: Gonçalves, Marcelo [UNESP], Tanomaru Filho, Mário [UNESP], Bonetti Filho, Idomeo [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://revodonto.bvsalud.org/scielo.php?script=sci_arttext&pid=S1984-56852012000200010&lng=pt&nrm=iso&tlng=en; http://hdl.handle.net/11449/125626
• topic: Endodontics; Instruments; Root canal preparation

Nickel-titanium rotatory systems should remove dentin during the root canal preparation to promote the enlargement and tapered shape with continuously narrowing towards the apex. Objective: The aim of this study was to analyze the cutting ability of three NiTi rotatory systems (n = 12): ProTaper (group 1), Mtwo (group 2), and K3 (group 3). Material and methods: Thirty six maxillary molar teeth were weighted on an analytical balance before and after the rotatory preparation of the mesio-buccal root canal. Data was statistically analyzed by ANOVA and Tukey s test with a significance level of 5%. Results: The results revealed the following mass differences (g) before and after the root canal preparation: ProTaper (group 1 – 0.0159 ± 0.004), Mtwo (group 2 – 0.0125 ± 0.002), and K3 (group 3 – 0.007 ± 0.003). Conclusion: ProTaper showed the highest cutting ability among the three tested nickel-titanium rotatory systems followed by Mtwo and K3.