Article information
Year 2018 Volume 68 Issue 2 Page 144-152
Title:
Comparison of Frictional Resistance of Various Orthodontic Ligation Methods in Wet Conditions
Keyword(s):
Orthodontic ligation method, Static frictional resistance, Elastomeric ligature
Abstract:
The aim of this study was to compare the maximum static frictional resistance of the various orthodonticligation methods. The 0.019”x0.025” straight stainless steel main archwires were ligated on 0.022”x0.028” slot maxillary right central incisor standard stainless steel brackets. The samples were divided into six groups according to ligation methods (10 samples per group): stainless steel ligation (Group 1); and five elastomeric ligations which were conventional ligation (Group 2); one pair of wing ligation (Group 3); two pairs of wing ligation (Group 4); cross-wing ligation (Group 5); and figure of eight ligation (Group 6). Then, all samples were tested using a Universal Testing Machine. The main archwires were pulled vertically and the maximum static frictional resistance was calculated. In order to compare the mean maximum static frictional resistance among the groups, One-Way ANOVA and Dunnett’s T3 multiple comparison test were used. Most ligation methods had different maximum static frictional resistance (p<0.05). The least mean maximum static frictional resistance was in the stainless steel ligation group (37.12±15.15 g), and was not significantly different from that in the cross-wing elastomeric ligation group (44.10±7.50 g). The greatest static frictional resistance was in the figure of eight elastomeric ligation group (226.64±37.94 g).