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Updated: Apr 6, 2026

Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry
Published on: December 9, 2025
Bone and Soft Tissue Changes after Two-Jaw Surgery in Cleft Patients.
Yung Sang Yun1, Ki Il Uhm1, Jee Nam Kim1
1Department of Plastic and Reconstructive Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
Two-jaw surgery in cleft lip and palate patients significantly improves facial aesthetics. Bone movement in orthognathic surgery leads to substantial, predictable soft tissue changes, enhancing outcomes.
Area of Science:
- Craniofacial Surgery
- Orthodontics
- Plastic Surgery
Background:
- 25-35% of cleft lip and palate patients require orthognathic surgery.
- Functional and aesthetic recovery are critical post-surgery.
- Two-jaw surgery (LeFort I + sagittal split ramus osteotomy) is common.
Purpose of the Study:
- To evaluate maxillary and mandibular skeletal changes.
- To assess concomitant soft tissue alterations.
- To analyze outcomes in cleft patients undergoing two-jaw surgery.
Main Methods:
- Included 28 cleft patients who had two-jaw surgery.
- Utilized pre- and post-operative cephalometric analysis.
- Compared bone and soft tissue measurements.
Main Results:
- Mean maxillary advancement (Point A): 6.12 mm.
- Mean mandibular setback (Point B): -5.19 mm.
- Significant improvement in facial angles and lip-E-line distance.
- Soft tissue change ratio: 0.55 (maxilla), 0.93 (mandible).
Conclusions:
- Two-jaw surgery yields optimal soft tissue changes in cleft patients.
- Soft tissue response is proportional to skeletal movement.
- Aesthetic results are achievable without direct soft tissue surgery.
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