Crossbite: Difference between revisions
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'''Crossbite''' is an occlusal irregular condition where '''a lower tooth has a more buccal position than the antagonist upper tooth'''. Crossbite can involve a single tooth or a group of teeth. Crossbite can be classified as anterior or posterior. | '''Crossbite''' is an occlusal irregular condition where '''a lower tooth has a more buccal position than the antagonist upper tooth'''. Crossbite can involve a single tooth or a group of teeth. Crossbite can be classified as anterior or posterior. | ||
* Anterior crossbite can also be referred as negative overjet, and is typical of class III skeletal relations (Progenism). * Posterior crossbite is often correlated to a narrow [[maxilla]] and upper dental arch. A posterior cross-bite can be unilateral or bilateral. | * Anterior crossbite can also be referred as negative overjet, and is typical of class III skeletal relations (Progenism). | ||
* Posterior crossbite is often correlated to a narrow [[maxilla]] and upper dental arch. A posterior cross-bite can be unilateral or bilateral. | |||
Unilateral cross-bite often determines a lateral shift of the mandibular position, which can become structural if left untreated for a long time during growth, leading to [[skeletal]] asymmetries. | Unilateral cross-bite often determines a lateral shift of the mandibular position, which can become structural if left untreated for a long time during growth, leading to [[skeletal]] asymmetries. | ||
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There are several therapies that can be used to correct a cross bite: | There are several therapies that can be used to correct a cross bite: | ||
* Multibrackets therapy ( | * Multibrackets therapy (braces), | ||
* Quad-Helix, | * Quad-Helix, | ||
* Hirex, | * Hirex, | ||
Revision as of 21:29, 10 January 2009
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Overview
Crossbite is an occlusal irregular condition where a lower tooth has a more buccal position than the antagonist upper tooth. Crossbite can involve a single tooth or a group of teeth. Crossbite can be classified as anterior or posterior.
- Anterior crossbite can also be referred as negative overjet, and is typical of class III skeletal relations (Progenism).
- Posterior crossbite is often correlated to a narrow maxilla and upper dental arch. A posterior cross-bite can be unilateral or bilateral.
Unilateral cross-bite often determines a lateral shift of the mandibular position, which can become structural if left untreated for a long time during growth, leading to skeletal asymmetries.
There are several therapies that can be used to correct a cross bite:
- Multibrackets therapy (braces),
- Quad-Helix,
- Hirex,
- Removable Plates,
- Invisalign,
- Delaire Mask.
The correct therapy should be decided by the orthodontist depending on the type and severity of the crossbite.
Image Gallery
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Unilateral Posterior Crossbite
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