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Evaluation of friction in orthodontics using various brackets and archwire combinations-an in vitro study
Sujeet Kumar1, Shamsher Singh2, Rani Hamsa P R3
1Senior Lecturer, Department of Orthodontics, Vyas Dental College and Hospital , Jodhpur, India .
Aim:
The aim of this study was to compare frictional resistance which was produced between conventional brackets (0.022 slot Otho-Organiser) and self ligating brackets (active Forestadent and passive Damon III) by using various arch wire combinations (0.016 Niti, 0.018 Niti, 0.017 x 0.025 SS and 0.019 x 0.025 SS).
Methods:
An experimental model which consisted of 5 aligned stainless steel 0.022-in brackets was used to assess frictional forces which were produced by SLBs (self ligating brackets) and CELs (conventional elastomeric ligatures) with use of 0.016 nickel titanium, 0.018 nickel titanium, 0.017 X 0.025"stainless steel and 0.019 X 0.025"stainless steel wires.
Statistical Analysis:
One way ANOVA test was used to study the effect of the bracket type, wire alloy and section on frictional resistance test .
Results:
Conventional brackets produced highest levels of friction for all bracket/archwire combinations. Both Damon III and Forestadent brackets were found to produce significantly lower levels of friction when they were compared with elastomerically tied conventional brackets.
Conclusion:
SLBs are valid alternatives for low friction during sliding mechanics.
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