Background/Aim. Mandibular prognathism, as one of the
more severe forms of dentofacial deformities, impairs the oral
functions and appearance of the patient’s face and represents
a psychosocial handicap with a negative impact on the quality
of life (QoL). The aim of the study was to assess the impact
of orthodontic-surgical (OS) treatment on the QoL of patients with mandibular prognathism. Methods. The study involved 40 patients (19 men and 21 women, with a mean age
of 24.1 ± 4.1 years) who underwent the OS treatment for
mandibular prognathism. All patients completed two questionnaires – the Oral Health Impact Profile (OHIP-14) and
the Orthognathic Quality of Life Questionnaire (OQLQ), before the start of treatment and 12 months after the completion of treatment. Results. The results of both questionnaires
showed an improvement in the QoL compared to the condition before the treatment. According to the OQLQ questionnaire, there was a postoperative improvement in the QoL
(score 24.8 ± 12.9) compared to the preoperative period
(score 51.3 ± 15.2). According to the results of the OHIP-14
questionnaire, there was a postoperative improvement in the
QoL (score 11.3 ± 2.9) compared to the preoperative period
(score 20.8 ± 6.9). The improvement of the QoL, 12 months
after the treatment, occurred in all life segments, measured by
both questionnaires. Conclusion. OS treatment of mandibular prognathism improves all oral functions, including the appearance of the patient’s face, thus improving the QoL.
