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Late lower arch crowding: the aetiology reviewed
1Orthodontic Department, School of Clinical Dentistry, Belfast.
Dental Update
|July 5, 2002
Abstract:
This article reviews the causes of the crowding that commonly occurs, particularly in the lower arch, after eruption of the second permanent molars. Factors discussed include mesially directed forces, in treated and untreated subjects, distally directed forces, occlusal changes, direction of eruption, tooth morphology, periodontal forces, and degenerative connective tissue changes.