Objectives, An analysis was conducted to compare mandibular range of motion among Class II patients treated with wire osteosynthesis or rigid internal fixation after surgical mandibular advancement. Study design. Patients randomly received wire osteosynthesis and 8 weeks of maxillomandibular fixation (n = 49) or rigid internal fixation (n = 78). Mandibular range of motion was measured 2 weeks before surgery and 8 weeks, 6 months, and 1, 2, and 5 years after surgery. Results. Both groups showed decreased mobility in all movement dimensions that progressively recovered to near presurgical levels over the 5-year follow-up period. The difference in range of motion between treatment groups was not statistically significant. Changes in proximal and distal segment position could not explain decreased mobility. Conclusions. Similar decreases in mandibular mobility occurred with wire and rigid fixation of a bilateral sagittal split ramus osteotomy after surgery. Long-term changes were statistically, but not clinically, significant.
|Number of pages||7|
|Journal||Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology|
|State||Published - Mar 2001|
Bibliographical noteFunding Information:
Supported by grant #1R01 DE09630 from the National Institute of Dental Research.
ASJC Scopus subject areas
- Oral Surgery
- Dentistry (all)