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Background <p>Accurate evaluation of soft tissue changes and patient perception is essential in orthognathic surgery for Class III skeletal deformity. This study assessed 3D soft tissue changes and their correlation with patient self-assessment after double-jaw surgery.</p> Methods <p>This prospective observational study included 24 patients undergoing maxillary advancement and mandibular setback. Facial scans were obtained preoperatively and at 3 and 6 months postoperatively using a 3D facial scanner. Soft tissue changes were analyzed, and patient self-assessment was recorded using a visual analogue scale (VAS). Associations were evaluated using univariable linear regression.</p> Results <p>Significant postoperative changes were observed, particularly in the lower lip, chin, and lower facial height (3–6&#xa0;mm). Nose width increased by ~ 2&#xa0;mm, and angular parameters improved notably. Superimposition analysis showed discrepancies from − 6&#xa0;mm to + 5&#xa0;mm. No significant differences were found between 3 and 6 months, indicating early stabilization. VAS scores improved significantly (3.5–5 points) and were strongly associated with lower lip position and distances to the Sn–Pg′ and Holdaway H lines (R² &gt; 0.5).</p> Conclusion <p>Double-jaw surgery significantly improves soft tissue profile and patient-perceived aesthetics. Three-dimensional facial scanning provides a reliable, objective tool, with 3 months representing a stable evaluation time point.</p>

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Correlation Between 3D Soft Tissue Changes and Self-Assessment after Double-Jaw Orthognathic Surgery in Patients with Class III Skeletal Deformity

  • 期刊论文

  • 发表日期：

    2026年6月16日

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  • Nhat Dinh-Minh Nguyen,
  • Nam Cong-Nhat Huynh,
  • Tin Si Ho,
  • Chon Thanh Ho-Nguyen,
  • Hai Tien Do,
  • Hung Trong Hoang

摘要

Background

Accurate evaluation of soft tissue changes and patient perception is essential in orthognathic surgery for Class III skeletal deformity. This study assessed 3D soft tissue changes and their correlation with patient self-assessment after double-jaw surgery.

Methods

This prospective observational study included 24 patients undergoing maxillary advancement and mandibular setback. Facial scans were obtained preoperatively and at 3 and 6 months postoperatively using a 3D facial scanner. Soft tissue changes were analyzed, and patient self-assessment was recorded using a visual analogue scale (VAS). Associations were evaluated using univariable linear regression.

Results

Significant postoperative changes were observed, particularly in the lower lip, chin, and lower facial height (3–6 mm). Nose width increased by ~ 2 mm, and angular parameters improved notably. Superimposition analysis showed discrepancies from − 6 mm to + 5 mm. No significant differences were found between 3 and 6 months, indicating early stabilization. VAS scores improved significantly (3.5–5 points) and were strongly associated with lower lip position and distances to the Sn–Pg′ and Holdaway H lines (R² > 0.5).

Conclusion

Double-jaw surgery significantly improves soft tissue profile and patient-perceived aesthetics. Three-dimensional facial scanning provides a reliable, objective tool, with 3 months representing a stable evaluation time point.