Purpose: After maxillary osteotomy in orthognathic surgery, patients report nasal breathing discomfort in early postoperative period. Topical hyaluronic acid (HA) has been proven to have beneficial effects on the upper airway tract mucosa. This prospective randomized controlled study was designed to analyze the effect on nasal obstruction of nebulized HA during the recovery process after maxillary osteotomy.
Methods: Patients were randomized to control and treatment groups. The postoperative treatment differed only for additional nebulized HA provided to the treatment group. The level of nasal obstruction, and its impact on quality of life, was assessed every 3 days for the first 15 days postoperatively using a questionnaire. Demographic and other variables (maxillary osteotomy type and surgical movements) were analyzed. Differences in quantitative data were tested using Student's t-test, the Mann-Whitney U test, and mixed repeated measures ANOVA.
Results: Twenty-four subjects were included in each group; differences in age, sex, type of maxillary osteotomy, and movements were non-statistically significative. At the beginning of treatment (T0), the two groups had comparable questionnaire scores regarding nasal breathing discomfort (p >0.05), whereas statistically significant differences were found at days 3, 6, 9, and 12 (p <0.05). A significant decrease in nasal breathing discomfort over time was observed in both groups, with trends that differed between the two, indicating faster improvement in the treatment group.
Conclusion: Nebulized HA can be a useful additional treatment in early postoperative period after orthognathic surgery. Patients reported more rapid improvement of nasal respiratory symptoms, indicating a potential role for HA in reducing recovery time and patient discomfort after maxillary surgery.
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