Comparative evaluation of efficacy of self-ligating interactive bracket with conventional preadjusted bracket: A clinical study.
OBJECTIVE
This clinical study was conducted to compare the interactive self-ligating twin brackets and the standard double width brackets for their efficiency in Rate of Retraction.


METHODS
A total of 20 patients with Angle's class I or class II or class III dento-alveolar malocclusions between the age group of 18-25 years were selected. 10 patients in each group both males and females were randomly selected for the study. Ten patients were bonded using conventional brackets (Group I) the other ten patients were bonded using Interactive self-ligating brackets (Group II). The Rate of retraction was quantified using the scanned models. Pretreatment and post treatment models were taken and scanned to measure the amount of Incisor movement and Anchor loss.


RESULTS
(1) Interactive Self-ligating brackets showed significant Rate of retraction when compared with conventional brackets on right and left quadrant. (Group I 0.545 ± .205: Group II 0.827 ± .208 P = .013*) (Group I 0.598 ± .160: Group II 0.804 ± .268 P = .071) (2) Interactive self-ligating brackets when compared with conventional brackets had significant amount of incisor movement on right and left quadrant. (Group I 3.51 ± .548: Group II 4.38 ± .1.06 P = .047*) and (Group I 3.66 ± .899: Group II 4.67 ± 1.02 P = .047*) (3) Conventional brackets showed significant Amount of Anchor loss when compared with that of Interactive self-ligating brackets on right and left quadrant. (Group I .948 ± .392: Group II 0.501 ± .229 P = .013*). In the left side (Group I 0.861 ± .464: Group II 0.498 ± .227 P = .060).


CONCLUSIONS
The interactive self-ligating brackets show more efficiency in Rate of Retraction, Amount of Incisor movement and Amount of Anchor loss when compared with the conventional brackets.
Department of Orthodontics, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu, India.
Balajee
B
Jayachandran
Department of Orthodontics, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu, India.
Ratna
R
Padmanabhan
Department of Orthodontics, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu, India.
Devaki
D
Vijayalakshmi
Department of Orthodontics, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu, India.
Janardhanam
J
Padmanabhan
Interactive brackets; self-ligating; sliding mechanics