하악지 시상 골절단술 이후 흡수성 나사를 사용하여 고정한 환자에서 술 후 안정성에 대한 연구 = STABILITY AFTER SURGICAL CORRECTION OF MANDIBULAR PROGNATHISM USING BILATERAL SAGGITAL SPLIT RAMUS OSTEOTOMY AND FIXATION WITH POLY-L/DL-LACTIDE COPOLYMER SCREWS ($BIOSORB^{TM}FX$)

다국어 초록 (Multilingual Abstract)

This study was designed to assess skeletal stabilily after surgical correction of mandibular prognathism by bilateral saggital split ramus osteotomy(BSSRO) and fixation with absorbable screws. From July 2001 to September 2003, 30 patients with Class III malocclusion were treated with BSSRO and mandibular setback. They underwent fixation with Biosorb$^{TM}$ FX screws. Cephalograms were obtained preoperatibely, 2 or 3 days postoperatively, and about 12 months after the operation. Changes in the position of lower incisor tip, B point, and pogonion were examined on lateral cephalograms. The mean mandibular setback just after surgery was 10.6mm. 12 months after surgery, mean relapse at pogonion represented 17.9% and 15.1% at B point. Our results suggest that fixation of the bony segments with absorbable screws after BSSO may be used effectively in properly selected cases.

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