Changes in Molar Occlusion after Extraction of All First Pre-molars: A Follow-up Study of Class II Division 1 Cases Treated with Removable Appliances

Abstract

Spontaneous improvement in molar occlusion is often assumed to accompany orthodontic treatment of the Class II Division I case where all pre-molars have been removed. The investigation shows that while the buccal occlusion generally improves after the completion of removable appliance treatment this is seldom enough to correct a Class II molar relationship.