For best result in class III malocclusion correction the orthopedic appliance should be worn at least:

 # For best result in class III malocclusion correction the orthopedic appliance should be worn at least:

A. 12-16 hours per day

B. 8-10 hours per day

C. 5-8 hours per day

D. Throughout night

The correct answer is A. 12-16 hours per day.

Chin cup and  face mask are the orthopedic appliances that can be given to correct skeletal class III malocclusion. At least 12 to 14 hours of wear per day produces desired results.