A prospective randomized clinical study comparing the alignment efficiency of four different ligation methods

To conduct a prospective randomized study comparing the efficiency of four different ligation systems (ELL,SSL,LL,PSL) over the duration of mandibular crowding alleviation.The study was conducted in Department of Orthodontics and Dentofacial Orthopaedics, Noorul Islam College of Dental Sciences, Neyyattinkara, Trivandrum. The present study evaluated the variations in alignment efficiency of four different ligation systems over the duration of mandibular crowding alleviation in patients during mandibular crowding alleviation. Eighty patients fulfilling the inclusion criteria were selected and equally divided into four groups- Elastomeric ligation (ELL), Stainless steel Ligation (SSL)- active and passive , Leone slide Ligatures (LL).: The mean treatment time for alignment for passive self ligating group (102 days) followed by leone group (128 days), stainless steel (176 days) and elastomeric (224 days) group. Thus the study showed no significant difference in the clinical performance between coventional, self ligating, while PSL performed significantly superior to other groups. From the above equation, during initial phase of orthodontic treatment.self-ligating brackets were more efficient than conventional brackets in anterior alignment, passive space closure, and mandibular incisal inclination.