Lateral Cephalometric Study Of Indonesian Class II Division 1 Malocclusion

Cephalometric radiography has been accepted worldwide as a powerful tool to study craniofacial growth, to diagnose deviations of an individual from population norms, and to plan orthodontic treatment and assess its progress and results, although it is not free from errors. Chung, Runck, Bilben, Kau (1986) state that racial differences in craniofacial morphology are well recognized. Their study shows that the Oriental people including Japanese, Chinese, and Koreans, characterised by larger lateral dimensions Caucasians, as measured by bizygomatic diameter, bigonial diameter, and head breadth. The anteroposterior dimension as measured by head length shows the opposite trend. It is not known what genetic forces are responsible for maintaining these racial differences. As a result, and as also proved by many cephalometric studies on different races, different race gives different appearance cephalometrically too. The aim of this study is to find the pattern of dyscrepancy in Class II division 1 malocclusion in Indonesian people. The Indonesian is the outcome of the intermingling of many ancient races. If the "normal" occlusion of Asian people appears with certain unique cephalometric characteristics when comparison is made with the Caucasians norms, it seems logical to assume that the "abnormal" occlusion will show unique characteristics as well