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The Midfacial Soft Tissue Changes After Anterior Maxillary Segmental Distraction Osteogenesis in Patients With Cleft:
Teng Wan1, Hao Sun, Tengfei Jiang
1Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, China.
Background:
Maxillary hypoplasia is common in patients with cleft lip and palate. In this study, the authors investigated the soft tissue changes in midfacial regions after anterior maxillary segmental distraction osteogenesis (AMSDO) in patients with cleft.
Methods:
Eight patients with cleft lip and palate who underwent AMSDO were enrolled in this study. Spiral computed tomographic images were taken before surgery and 6-12 months after surgery to evaluate soft tissue changes after AMSDO. The midfacial area was divided into 6 regions of interest according to anatomical subunits. The average movements of each region were calculated using volumetric changes and preoperative region surface areas.
Results:
The upper lip on both sides has the most anterior movement (5.22±0.86 and 5.14±0.84 mm), supracommissural regions have a little less movement (4.11±0.55 and 3.81±0.67 mm), paranasal regions have the least movement (3.37±0.47 and 3.15±0.36 mm). The corresponding regions of interest showed no significant difference on the cleft side versus the noncleft side.
Conclusions:
Anterior maxillary segmental distraction osteogenesis can improve the soft tissue profile in patients with cleft, and there was no significant difference in soft tissue changes between the cleft side and the noncleft side.
