SciELO - Scientific Electronic Library Online

 
vol.10 issue3 author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Brazilian Journal of Oral Sciences

On-line version ISSN 1677-3225

Abstract

MANHAES, Fernando Rayes et al. Fracture strength of ceramic brackets submitted to archwire torsional strain. Braz. J. Oral Sci. [online]. 2011, vol.10, n.3, pp. 180-183. ISSN 1677-3225.

Aim: To evaluate the fracture strength of ceramic brackets submitted to archwire torsional strain. Methods: Different types of maxillary central incisor ceramic brackets from four different commercial brands, Roth prescription (0.022" x 0.028"), were evaluated, namely: Mystique (GAC), InVu (TP Orthodontics), Clarity (3M Unitek) and Luxi II (RMO Ortohodontics). To evaluate the fracture strength, 0.019"x 0.025" stainless steel orthodontic wires were inserted into the bracket channels and submitted to torsion until they fractured. Results: The InVu brackets showed a significantly higher fracture strength than the other brackets (p<0.05), which did not differ significantly among them (p>0.05). Conclusions: Among the brackets tested, the traditional ceramic bracket InVu showed the highest fracture strength, while the Luxi II bracket, obtained the lowest value.

Keywords : braces; ceramics; orthodontics; biomechanics.

        · text in English     · pdf in English