OBJECTIVEDividing the mandible into lower part of mandibular ramus, mandibular angle, mandibular body, chin, we designed subarea ostectomy for reduce the width of anterior, body, posterior part of of the lower face.

METHODSCombide with splitting ostectomy of the out layer of mandible, ostectomy of inferior border of mandible and augmentation of the chin, re-shape the mandibular angle, body, and chin, corrected the un-beauty of the lower face and side-face.

RESULTSFrom May 2003 to August 2005 , a total of twenty-three patients have been operated on by this method with satisfactory results.

CONCLUSIONSSubarea ostectomy of mandible is more effective in re-shaping the whole lower face.