One of the most important values in cephalometric tracing is the gonial angle and ramal length. Gonial angle is used to measure growth pattern of patients, teeth extraction pattern in Class II patients, surgical decision in class III skeletal base patients and age estimation in forensic medicine. Ramal length is the mandibular height. If ramal length is a few millimeters too short or too long, there is a basis for a vertical malocclusion. Both orthopantomogram (OPG) and lateral cephalograms can be used for the measurement of gonial angle and ramal length. In lateral cephalogram, superimposition of the left and right sides angle, makes it difficult to measure the gonial angle and ramal length accurately. Thus, gonial angle and ramal length measured from panoramic radiographs is found to be more reliable than lateral cephalogram.