[Soft tissue changes after advancement genioplasty in Chinese adults].

Twenty-five Chinese patients who had undergone advancement genioplasty were evaluated for soft tissue changes of chin. The effects of bony genioplastic advancement on soft tissues of profile were studied by means of computerized cephalometric analysis. The change ratios between soft tissue and hard tissue, as well as regression equations were calculated. The result of this study led to the following conclusions: The soft tissue chin point and labiomental sulcus moved by 85% and 41% of horizontal advancement of the mandibular symphsis.