Article ID Journal Published Year Pages File Type
3119256 American Journal of Orthodontics and Dentofacial Orthopedics 2008 7 Pages PDF
Abstract
Introduction: This study was developed to evaluate in vitro the properties related to sliding resistance of esthetic ligatures. Methods: Frictional force of 6 ligatures-2 conventional, 2 specially coated elastomeric, Teflon-coated (Dupont, Wilmington, Del) stainless steel, and stainless steel (control) ligatures-were studied by sliding 0.019 x 0.025-in stainless steel wire through the 0.22-in slot of stainless steel bracket. Elastomeric ligatures were tested for frictional and tensile forces under 3 experimental conditions: recent stretching, after 21 days of simulated stretching in artificial saliva, and a demineralizing/remineralizing regimen. Statistical analysis was conducted with ANOVA and Games-Howell tests. Results: There was high correlation between frictional and tensile forces of elastomeric ligatures, with reduction of both after 21 days. The demineralizing/remineralizing regimen reduced the frictional forces of ligatures to the same level as the ligatures in artificial saliva. Teflon-coated and stainless steel ligatures showed the lowest initial frictional forces, but there was no difference in friction of stainless steel and poststretched elastomeric ligatures. Conclusions: Frictional forces generated by esthetic elastomeric ligatures under simulated oral environments are not stable and are more related to tensile force than to surface characteristics of the ligatures.
Related Topics
Health Sciences Medicine and Dentistry Dentistry, Oral Surgery and Medicine
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