Fig. 1

The position of the AL and the reference points. A The positions in relation to the x and y axes (blue lines). B The positions in relation to the occlusal plane. C The positions in relation to the posterior border of the ramus of the mandible. The green lines represent the reference plane which was parallel to the occlusal plane and passed the most concave point of the anterior border of the ramus (coronoid notch). The dashed lines represent the occlusal plane