Paper Title
The Influence of Orthodontic Treatment in Improving Oral Health Related Quality of Life

Aim - The purpose of this study was to evaluate the effect of first six months of orthodontic treatment in improving oral health related quality of life (OHRQoL). Materials and Methods - Ninety parents of the adolescent patients undergoing fixed orthodontic treatment answered a OHR QoLquestionnaire based on modified family impact scale (FIS)before orthodontic treatment(T1) and after 6 months of the start of treatment (T2). The Wilcoxon signed rank test was used to determine the significance difference in FIS scores between T1 and T2. Effect size andminimal clinically important difference (MCID) for the FIS were also determined. Results - There was statistically significant difference betweenFIS scores at T1 and T2 (P<0.001). Keywords - OHRQoL, FIS, orthodontic treatment.