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Occlusion is how the upper and lower teeth fit together (how they align). This is also known as "bite." Perfect bites are rare. Most people have some form of malocclusion ("poor bite"). Orthodontists use braces and other tools to move teeth into a better and more normal occlusion, or alignment.
ByHealthwise StaffPrimary Medical ReviewerAdam Husney, MD - Family MedicineMartin J. Gabica, MD - Family MedicineWilliam F. Hohlt, DDS - Orthodontics