We performed a clinicostatistical observation of 291 patients who underwent orthognathic surgery between 1981 and 2004 in the Department of Oral Maxillofacial Surgery, Kagoshima University Hospital. There were 98 male and 193 female patients with an average age of 20.8 years old.
The results were as follows.
1. Most of the patients (83.5%) demonstrated mandibular prognathism with/without other deformities of the jaw.
2. Sagittal splitting ramus osteotomy (SSRO) was performed in 209 cases (71.8%), and was the most frequently performed surgical procedure.
3. The average surgical duration was 5 hours and 31 minutes and blood loss was 484g during SSRO.
4. Bone fixation in SSRO varied as follows: Sapphire screws were mostly used in the beginning, followed by stainless steel screws.PLLA screws were mainly used in recent years.
5. There was no significant difference in surgical duration, blood loss and maxillary forward advancement during Le Fort I osteotomy between cases with and without cleft lip and/or palate.
