Abstract
It is considered that the morphology of the cervicomental region is important when the therapeutic target is established in patients with dento-facial deformity. In the present study, the lateral aspect of soft tissue in this portion was examined in adult Japanese females with normal occlusion and compared with those in patients after orthognathic surgery. As a result, the mean lip-chin-throat angle in patients after orthognathic surgery was 105.7±9.9°, which was smaller than the value of 113.0±5.9° in the subjects with normal occlusion. The mean cervicomental angle in the patient group was 119.1±13.5° which resembled the value of 116.7±8.6° in the normal group. The mean throat length of 33.7±3.6mm in the former was similar to the value of 33.4±3.1mm in the latter group. However, it was suggested that with the aid of an operative method using SSRO alone, complete removal of protruded appearance in the mental region is hardly attainable. In patients who strongly desire improvement in this area, a method to correct this protruded appearance was considered necessary.
