Braces are applied to teeth for various reasons, including poorly aligned jaws, crooked, crowded and missing teeth, or a bad bite (also called malocclusion).
Various things can cause teeth to become crooked or jaws misaligned, including thumb-sucking or a traumatic injury. Some conditions are inherited.
Children between the ages of 10 and 14 are typical candidates for braces because their facial structures are still developing. Adult braces usually entail additional procedures because their faces have already fully developed.