The Stability of Double Jaw Surgery: A Comparison of Rigid Fixation versus Skeletal Wire Fixation
Abstract
Cephalometric head films from a sample of 35 patients who had undergone a LeFort I maxillary osteotomy combined with a simultaneous mandibular advancement were evaluated to determine the postsurgical stability of the skeletal segments. Twenty-six of the patients had rigid fixation to stabilize the segments and nine patients had skeletal wire fixation. Twenty-seven cephalometric parameters were examined before surgery, immediately after surgery, and after a follow-up period averaging fifteen months. The results showed the maxilla to be stable for both types of fixation but the mandible was significantly more stable in the rigid fixation sample, especially in terms of the ability of rigid fixation to maintain rotational control between the proximal and distal segments. Measurements of cephalometric points representing resting muscle lengths indicated a propensity for the stretched muscles to relapse back to within 5 percent of their original lengths. Both groups showed a long term change in the hyoid bone position and head posture. Keywords: Dental surgery; Theses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1988
- Accession Number
- ADA197148
Entities
People
- Kirk D. Satrom
Organizations
- Air Force Institute of Technology