Treatment effect of submental artery skin flap and expanded cervical flap on chin scar;

Objective To evaluate whether there is difference with regard to chin morphology in subjects with different vertical skeletal craniofacial pattern and the relationship among them.

Objective To study anatomic and computed tomographic measurements of Chinese mandibular genial tubercles and to evaluate the correlations between them.

Treatment of prominent malar complex and microgenia;

Removal of carve bone of midline wedge to correct broad chin deformities;

Morphological characteristics of mental canal and its clinical significance;

Objective To study the feature of the incisor nerve canal and its relation to the mandibular canal and mental canal so as to offer a reliable anatomical data for the distric operation.

Mental canal, which bends backward and upward and outward then opens into mental foramina.