Comparison of Rate of Maxillary Canine Retraction Using Two Different Bracket Systems – A Split-mouth Clinical Trial

Objectives: The aim of this research was to compare the rate of maxillary canine retraction and the amount of anchorage loss using two different bracket designs particularly Self Ligating and Synergy, keeping the bracket prescription constant.
Methods: The study was designed as a prospective randomized controlled split mouth clinical trial, which included 16 subjects of age 12-30 years, divided into 2 groups, left and the right maxillary quadrants receiving Self Ligating and Synergy brackets based on simple randomization, along with a 19*25” SS wire and closed coil springs for individual canine retraction. The patients were reviewed every 21 days for 4 appointments, and records were taken for each review and the measurements were calcuated, tabulated and analysed.
Results: The results indicate that there is a statistical difference between both the groups in the rate of canine retraction with a p value greater than 0.05 at every interval.
The results also indicate that there is no significant difference between both the groups in the amount of anchorage loss.
Conclusions: The mean or average rate of canine retraction for Group I Synergy was 1.933mm ±0.645mm which was statistically significant, while the mean or average amount of anchorage loss was 0.323mm ±0.272mm. The mean average rate of canine retraction for Group 2 Self Ligating was 1.337mm ±0.624mm which was statistically significant, while the mean or average amount of anchorage loss was 0.317mm ±0.205mm.