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The Effect of Le Fort I Osteotomy on Nasal Tip Rotation in Dynamic Smile
Muazzez Suzen1, Bugra Duc2, Emine Ogut3
1Associate Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Istanbul Medipol University, Istanbul, Turkey.
Summary
Orthognathic surgery impacts dynamic nasal tip rotation during smiling. Significant reduction in nasal tip rotation was observed after maxillary advancement exceeding 6 mm.
Area of Science:
- Plastic Surgery
- Orthodontics
- Facial Aesthetics
Background:
- The nasal region is vital for facial aesthetics and orthognathic surgery planning.
- Dynamic nasal changes during smiling post-Le Fort I surgery remain understudied.
Purpose of the Study:
- To quantify and compare nasal tip rotation during smiling before and after orthognathic surgery.
- To evaluate the impact of maxillary advancement on dynamic nasal changes.
Main Methods:
- Retrospective analysis of maxillary advancement patients (2018-2024).
- Exclusion criteria included prior nasal surgery, craniofacial syndromes, and significant asymmetry.
- Nasal tip rotation was measured using profile photographs in resting and smiling states, comparing pre- and post-operative changes.
Main Results:
- A total of 48 subjects were analyzed (mean age 24.23).
- Overall nasal tip rotation difference during smiling decreased post-surgery (1.57° to 1.30°).
- A statistically significant reduction in dynamic nasal tip rotation was found in patients with ≥6 mm maxillary advancement (P=.016).
Conclusions:
- Orthognathic surgery, particularly with substantial maxillary advancement (≥6 mm), can significantly reduce dynamic nasal tip rotation during smiling.
- This finding is crucial for optimizing aesthetic outcomes in orthognathic surgery planning.
