Abstract
Objective
The effect of the modified step Le Fort I osteotomy on the inferior nasal structures and the nostril area was evaluated.
Materials and methods
This study included 24 patients who had modified step Le Fort I osteotomy. Inferior nasal concha volume (INCV), meatus nasi inferior volume (MNIV), the sum of both structures volume (TV), and nostril area (NA) were evaluated in pre- (T0) and postoperative (T1) periods.
Results
For all patients, NA increased both on the right side (p = 0.011) and left side (p = 0.050) after surgery. The INCV and TV values were lower in T1 than those in T0; however, a statistically significant decrease of INCV and TV was found only in the right side of males (p = 0.039 and p = 0.050, respectively). No significant difference was found in MNIV between T0 and T1 measurements (p > 0.05).
Conclusion
Maxillary advancement with the modified step Le Fort I osteotomy technique increased the NA, which may have a positive effect on breathing function. On the other hand, although TV tended to decrease, MNIV did not change after surgery as the same decreasing tendency also existed in INCV.
Clinical relevance
Step Le Fort I advancement surgery technique usually affects nasal structures positively regarding the nasal airway.
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The Institutional Review Board and Clinical Ethics committee of Tokat Gaziosmanpasa University Medicine Faculty approved this retrospective clinical study (Registration number: 20-KAEK-269).
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Akbulut, N., Akbulut, S., Bayrak, S. et al. Effects of modified step Le Fort I advancement surgery on nostril area and inferior nasal structures volume in class III patients: a retrospective clinical study. Clin Oral Invest 27, 807–815 (2023). https://doi.org/10.1007/s00784-023-04860-3
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DOI: https://doi.org/10.1007/s00784-023-04860-3