Understanding the nasolabial changes skeletal Class III patients experience is essential for achieving optimal aesthetic outcomes in maxillofacial surgery. Patients with skeletal Class III malocclusion often face significant midfacial depression. Surgeons typically address this issue using either Le Fort I maxillary advancement or paranasal Medpor implantation. Consequently, clinicians need precise comparative data to guide their choice between these two surgical interventions. A retrospective study recently compared these methods by analyzing twenty patients over a minimum six-month postoperative period.

Comparing Nasolabial Changes Skeletal Class III Outcomes

The researchers used spiral CT data to measure linear segments, angles, volume, and curvature in the nasolabial region. Interestingly, both procedures successfully improved paranasal depression. However, the study identified significant differences in the subnasal and alar regions. For example, Medpor implantation resulted in much larger increases in alar width and alar base width. On the other hand, the Le Fort I advancement group showed a significant reduction in nasal length (N'-SN). This reduction did not occur in the implantation group, where nasal length remained stable.

Regional Impact and Surgical Planning

In the subnasal region, Le Fort I advancement produced more pronounced changes in volume and curvature. Therefore, this technique remains the superior choice for patients requiring significant subnasal correction. Conversely, Medpor implantation provides an effective alternative for increasing paranasal volume with less impact on nasal length. Furthermore, surgeons must inform patients that Medpor may widen the nasal base more than advancement alone. These insights allow for more tailored surgical planning based on individual aesthetic needs and anatomical requirements.

Frequently Asked Questions

Which procedure improves subnasal depression more effectively?

Le Fort I advancement provides significantly greater changes in the subnasal region compared to Medpor implantation. It modifies subnasal volume and curvature more extensively than implants.

Does Medpor implantation affect the width of the nose?

Yes, Medpor implantation causes a significantly greater increase in alar width and alar base width compared to Le Fort I advancement.

How does Le Fort I advancement affect nasal length?

Le Fort I advancement often leads to a significant reduction in nasal length (N'-SN). In contrast, Medpor implantation typically shows no significant change in nasal length after the procedure.

Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

Lv X et al. Comparison of nasolabial changes following Le Fort Ⅰ maxillary advancement versus Medpor implantation in skeletal class Ⅲ patients. Head Face Med. 2026 Apr 10. doi: 10.1186/s13005-026-00620-2. PMID: 41964092.

Vasudavan S, Jayaratne YS, Padwa BL. Nasolabial changes after Le Fort I advancement. J Oral Maxillofac Surg. 2012 Apr;70(4):e270-7. doi: 10.1016/j.joms.2011.11.026.

Paredes A et al. Three-dimensional analysis of nasolabial soft tissue changes after Le Fort I osteotomy: a systematic review of the literature. Int J Oral Maxillofac Surg. 2019 Oct;48(10):1330-1345. doi: 10.1016/j.ijom.2019.01.028.