What is a Posterior Crossbite?

May 9, 2013
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A crossbite occurs when some or all of the upper teeth fit into the wrong side of the lower teeth when biting down. A posterior crossbite may develop when a patient has a narrow upper jaw or an abnormally wide lower jaw, forcing the patient to move their lower jaw forward or sideways when closing their mouth into a bite position, to the point that the lower teeth sit outside of the upper teeth.

Posterior crossbites may involve one or both sides of the jaw. If one side of the jaw is affected the malocclusion is known as a unilateral crossbite, while a crossbite affecting both sides of the jaw is a bilateral crossbite. Untreated posterior crossbites can lead to a number of complications, including gum recession, loose teeth, abnormal wear and tear of the enamel, and asymmetric growth of the jawbones.

Seeking answer

Make sure you are getting the high-quality treatment you need for crossbites by contacting Park Avenue orthodontist Dr. David Seligman with Seligman Orthodontics at (646) 681-8516. We offer Damon Clear braces, Invisalign, and Incognito braces.

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