What is the force generated by lip musculature on the upper incisor teeth at rest?: (A) 15-20 g/square cm, (B) 20-25 g/square cm, (C) 10-15 g/square cm, (D) 30-35 g/square cm
Answer is B. The forces generated by lip musculature on the upper incisor teeth at rest is 20-25 g/square cm.