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By: Sh.Barat MD. Anthropometric proportions of the chin have been measured in “healthy young North American white adults” by Leslie Farkas’ team in Toronto [8]. In their study, they found an average distance from the LM fold to pogonion of 16.9±3.6mmfor men and 17.3±2.3mm for women. The average distance from the pogonion to gnathion was 20.4±3.7mm for men and 17.6±2.2mm for women. Absolute values are less important to facial aesthetics than a well-proportioned chin. Microgenia is the most common chin deformity, with the vast majority in the horizontal plane Procedures available include: sliding osseous genioplasty, reduction wedge genioplasty, reduction mentoplasty, alloplastic augmentation, orthognathic surgery, submental liposuction, platysma plication, cervicofacial rhytidectomy, deoxycholic acid (Kybella R ) injections into submental fat, and skin resurfacing Systematic Evaluation Various conditions such as hemimandibular hyperplasia or juvenile rheumatoid arthritis may be progressive, with early intervention resulting in relapse. Bone scintigraphy can identify condylar hyperplasia when active changes are occurring. Serial cephalometric and photographic analysis over a period of six months to a year indicates likely succession of growth when no further changes are seen. Men typically finish mandibular growth in their late teens to early twenties, with women ending growth two to three years after menarche. In cases of class II skeletal deformities, concern is lessened for surgical relapse as the deformity of growth is in the same direction as the movement planned. The opposite is true for class III deformities.