International Session 65　　Septorhinoplasty

Background : Midfacial fractures may cause persistent functional, aesthetic, psychological, and social impairment.Outcome evaluation should therefore include patient-reported quality of life(QoL)in addition to clinical and radiological parameters.While the SF-36 and OHIP-14 questionnaires have been validated in Indonesian, the 15-Dimension(15D)questionnaire has not.Objective : To assess the validity and reliability of the Indonesian adaptation of the 15D questionnaire and to describe postoperative quality of life in patients with midfacial fractures, as well as its association with injury severity based on the Facial Injury Severity Scale(FISS) .Methods : This observational study consisted of two phases : cross-cultural adaptation and psychometric testing of the 15D questionnaire, followed by postoperative QoL assessment using the 15D, SF-36, and OHIP-14.Associations between QoL scores and FISS were analyzed.Results : The Indonesian 15D demonstrated good validity and internal consistency(Cronbach's alpha＞0． 70) .Most patients reported moderate to good postoperative QoL.No significant association was found between FISS and QoL outcomes. Conclusion :The Indonesian 15D is a valid and reliable instrument for assessing quality of life after midfacial fracture treatment.Injury severity does not necessarily reflect patient-reported QoL.