دراسة مقارنة لقوى الاحتكاك السكوني الناتجة عن اربعة انواعٍ مختلفة من طرق الربط خلال مرحلة الرصف والتسوية

This study aimed to compare the static friction forces of four different types of ligating the orthodontic wire to the bracket. (20) Conventional metal brackets (Mini-Master, American Orthodontics), (10) active self-ligation brackets (Active SL) (Active Empower, American Orthodontics), (10) passive self-ligation brackets (Passive SL) (Passive Empower, American Orthodontics), (10) conventional elastomeric ligature (CEL) (Unistick-Ligatures, American Orthodontics), (10) unconventional elastomeric ligature (UCEL)(Slide©, Leone, Italy) and (40) nickel titanium wires (0.018-in)(American Orthodontics). The static friction forces were measured by the (Zweigle F 427) machine. The results showed that conventional elastomeric ligature has produced a statistically significant larger static friction forces than the three other types (P<0.05), while the differences between the three other types (UCEL, Active SL, Passive SL) were not statistically significant (P>0.05).