Oriental women, in general, have prominent mandibular angles and short chins that are thought to be unattractive, square and muscular appearance. Therefore, mandibular ostectomy is one of the most common aesthetic facial bone contouring surgery in oriental and intraoral approach has been used commonly. After the angle ostectomy via intraoral approach, it is not easy for unexperienced surgeons to remove the involuted bony fragment due to the limited view and operation access. This report describes a new method for removal of involuted bony fragment in reduction mandibular angleplasty 
Thirty eights Case of reduction mandibular angleplasty has been operated from February 2003 to June 2005. We have experienced the involuted bony segment in 12 cases after angle ostectomy. We have adopted periosteal cottle elevator and 18 gauze spinal needle as new methods of extracting the involuted bony fragment. The institutes were used to push the involuted bone segment.
We could easily extract the bony fragment with new methods involuted 12 patients mandibular angle within 5 minutes. No major complications were occurred.