Posterior crossbite - treatment and stability

• Autor(a) principal: Almeida,Renato Rodrigues de
• Data de Publicação: 2012
• Outros Autores: Almeida,Marcio Rodrigues de, Oltramari-Navarro,Paula Vanessa Pedron, Conti,Ana Cláudia de Castro Ferreira, Navarro,Ricardo de Lima, Marques,Henry Victor Alves
• Tipo de documento: Relatório
• Idioma: eng
• Título da fonte: Journal of applied oral science (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572012000200026
• topic: Orthodontics; Malocclusion; Palatal expansion technique

Posterior crossbite is defined as an inadequate transversal relationship of maxillary and mandibular teeth. Even when eliminating the etiologic factors, this malocclusion does not have a spontaneous correction, and should be treated with maxillary expansion as early as possible. This treatment aims at providing a better tooth/skeletal relationship, thereby improving masticatory function, and establishing a symmetrical condyle/fossa relationship. Should posterior crossbite not be treated early, it may result in skeletal changes, demanding a more complex approach. Additionally, an overcorrection expansion protocol should be applied in order to improve the treatment stability. Although the literature has reported a high rate of relapse after maxillary expansion, the goal of this study was to demonstrate excellent stability of the posterior crossbite correction 21 years post treatment.