The majority of malocclusions may occur due to skeletal jaw growth disturbances. Class II and Class III malocclusions are identified as forward growth of maxilla and mandible respectively. Early & Proper assessment of etiology helps in definitive treatment options decreasing the chances of surgical procedures at a later stage. So there is high requirement for various indicators for analyzing the underlying skeletal problems. This book emphasis indicator required to assess the jaw discrepancies in ANTERO POSTERIOR direction.