JOURNAL OF ORAL & MAXILLOFACIAL RESEARCH Baherimoghaddam et al. Changes in Cephalometric Variables after Orthognathic Surgery and Their Relationship to Patients ’ Quality of Life and

Objectives: This study was designed to assess the relationship between postsurgical cephalometric changes and quality of life and satisfaction after orthognathic surgery. Material and Methods: Sample size consisted of 30 patients with class III and 25 patients with class II malocclusion treated with bilateral sagittal split osteotomy and Le Fort I osteotomy. Profile convexity, lower facial height proportion, lip position and length, nose, and chin position were measured on pre and post-treatment cephalograms. To assess the patients ’ satisfaction and quality of life (QoL) after surgery, the questionnaire of the Rustemeyer’s study and Oral Health Impact Profile (OHIP) questionnaire were used, respectively. The paired-sample t-test, Spearman correlation analysis and Pearson correlation analysis was used in SPSS statistical software. Results: In class III malocclusion patients, decrease in facial angle, convexity angle, mentolabial angle, and increase in upper lip protrusion had the most positive impact on QoL. Decrease in facial angle and increase in upper lip protrusion were correlated positively with satisfaction questionnaires. In class II malocclusion patients, increase in convexity angle, facial angle and mentolabial angle had the most positive impact on satisfaction and QoL. Conclusions: Consideration both subjective and objective parameters affecting on the patients ’ satisfaction and their qualit