抄録
We evaluated clinicostatistically the status of orthognathic surgery in our department between 1990 and 2001.
The results were as follows:
1. Orthognathic surgery was performed on 189 patients, and the annual number of operations has markedly increased since 1994.
2. The patients consisted of 135 females and 54 males, whose ages in mode were 16 and 17 years old, respectively.
3. The chief complaints in 90% of all patients were malocclusion and esthetic disturbance.
4. Approximately 90% of. all patients were diagnosed as mandibular protrusion without or with mandibular asymmetry, open bite, or maxillary retrusion.
5. Bilateral sagittal split ramus osteotomy (SSRO) was performed on 96.8% of all patients.
6. The recorded median of surgical duration and surgical blood loss were 155min. and 255g for SSRO, 260min. and 690g for SSRO with genioplasty, and 290 min. and 877g for two-jaw surgery.
7. Osteosynthesis of bone fragments in SSRO was carried out as follows: 173 cases with miniplate fixation, 6 cases with circumferential wiring, and 8 cases with screw fixation.
8. The duration of intermaxillary fixation in SSRO was 15 days after 1996.
