Crossbite

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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. It can be classified in anterior or posterior. Anterior cross bite 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 (dental 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.

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