The purpose of this study was to evaluate the quality of life of patients with dentofacial deformity who needed surgical treatment, through translation and validation of the Orthognathic Quality of Life Questionnaire (OQLQ) into Brazilian Portuguese. The adaptation process was following for six steps: Translation, Synthesis, Back translation, Analysis by a working group of experts, Pre-test and Cross-Cultural Adaptation. After the cultural adaptation, the questionnaire was administered to a total of 13 patients ( f = 9 and m = 4) indicated for combined orthodontic and surgical treatment. The patients were evaluated before surgery, and 1 and 4 months postoperative, respectively. The statistics were assessed with software SPSS 15.0 (chi-squared test; p = 0.05). 38.5% (5/13) of the patients demonstrated severe bite problems and 8/13 (61.5%) claimed that they feeling uncomfortable about their appearance before surgery of which 50% (4/8) claimed feeling not uncomfortable and 46.2% (6/13) have no bite problems 4 months postoperative. About the social aspects, 92.3%(12/13) Said to be aware about their appearance and feeling uncomfortable at the preoperative period, and 84.6% (11/13) of sample feeling uncomfortable no more 4 months postoperative. Thus conclude we had success in translation and validation into Portuguese (Brazil) of OQLQ. Showing that patients with severe dentofacial deformities have aesthetic and functional complaints that reflect on their self-esteem and social life by restricting their quality of life.

Conflict of interest: None declared.