a. shows the Sc can be calculated sequentially by using Eq 3 for various lower settings with upper jaw fixed at 4 cm, 5 cm, 20 cm, 30 cm, and 40 cm.

b. shows the Sc was calculated sequentially for various upper settings with lower jaw fixed at 4 cm, 5 cm, 20 cm, 30 cm, and 40 cm.