Assessing change in quality of life using the Oral Health Impact Profile (OHIP) in patients with different dentofacial deformities undergoing orthognathic surgery: a before and after comparison

Dentofacial deformities and their treatment have physical and psychological repercussions on quality of life (QOL). Seventy-four patients were evaluated preoperatively (T0) and at 4–6 months postoperatively (T1). Oral health-related QOL was assessed using the short form of the Oral Health Impact Profile (OHIP-14). There was a statistically significant reduction in the average overall OHIP-14 score between T0 (13.23 ± 6.45) and T1 (3.26 ± 4.19). In addition, there were significant decreases in all seven OHIP-14 domains. Class III patients benefited in all domains evaluated, while a significant improvement was seen only in the psychological disability domain for class I patients. Class II patients showed a significant benefit in all domains except the domain of functional limitation. With regard to the total sample (n = 74) and class III patients (n = 58), correlations between domains were identified for all domains. The same correlation was not identified for class I (n = 5) and II (n = 11) patients. The entire sample and class III patients showed significant improvements in OHIP-14 scores for all degrees of postoperative sensory disturbance in the upper and lower lips, except for patients with degree 5 (extreme) disturbance of the upper lip. Orthognathic surgical treatment had a positive impact on oral health-related QOL in the patients evaluated.