SciELO - Scientific Electronic Library Online

vol.16 issue4Orthodontists' and laypersons' perception of mandibular asymmetriesComparison of periodontal parameters after the use of orthodontic multi-stranded wire retainers and modified retainers author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Dental Press Journal of Orthodontics

Print version ISSN 2176-9451


BRAGA, Luiz Carlos Campos et al. Friction force on brackets generated by stainless steel wire and superelastic wires with and without IonGuard. Dental Press J. Orthod. [online]. 2011, vol.16, n.4, pp.41.e1-41.e6. ISSN 2176-9451.

OBJECTIVE: The aim of this study was to evaluate the friction forces on brackets (Roth, Composite, 10.17.005, 3.2 mm, width 0.022" x 0.030 ", Torque -2° and angulation +13°, Morelli®, Brazil), with stainless steel orthodontic rectangular wire (Morelli®, Brazil) and nickel titanium superelastic Bioforce wires with and without IonGuard (Bioforce, GAC®, USA). MATERIAL AND METHODS: Twenty-four brackets/wire segment combinations were used, distributed into three groups according to the orthodontic wire. Each bracket/wire segment combination was tested three times. The tests were performed in a universal testing machine Emic DL2000®. The data was submitted to ANOVA one way followed by Tukey's post hoc test (p<0.05). RESULTS: The rectangular orthodontic Bioforce wire with IonGuard presented significantly lower resistance to sliding than Bioforce without IonGuard. There was no statistical difference among the other groups. However, the coefficient of variation of Bioforce with and without IonGuard was lower than that of the stainless steel wire. CONCLUSION: The rectangular orthodontic Bioforce wire with IonGuard presented lower resistance to sliding than Bioforce without IonGuard, with no difference to the stainless steel wire.

Keywords : Orthodontic appliance design; Friction; Orthodontic wires.

        · abstract in Portuguese     · text in English | Portuguese     · English ( pdf epdf ) | Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License