Posted on Sep 25, 2018

Dr.Wael Al Tawil Dental Clinic

Crossbite is a form of malocclusion where a tooth (or teeth) has a more buccal or lingual position (that is, the tooth is either closer to the cheek or to the tongue) than its corresponding antagonist tooth in the upper or lower dental arch. In other words, crossbite is a lateral misalignment of the dental arches.

The two types of abnormal bites are anterior and posterior:

1-Cochrane defines a posterior crossbite as one where the top back teeth bite down inside the bottom back teeth. One to 16 percent of children have a posterior crossbite before their permanent teeth erupt.

2-The second classification, anterior, according to Contemporary Clinical Dentistry, results when the palate forces the upper front teeth to sit behind the lower front teeth. The journal reports that the rate of anterior crossbite is 4 to 5 percent.


The best time to correct a misaligned bite is as a child or teenager, but there are treatment options available to adults. Treating the condition involves adjusting the teeth, palate or jaw with orthodontic appliances.

1-Palatal or maxillary expander

2-Removable expander

3-Surgically assisted rapid palatal expansion

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