%0 Journal Article %T Posterior crossbite - treatment and stability %A Almeida %A Renato Rodrigues de %A Almeida %A Marcio Rodrigues de %A Oltramari-Navarro %A Paula Vanessa Pedron %A Conti %A Ana Cl¨˘udia de Castro Ferreira %A Navarro %A Ricardo de Lima %A Marques %A Henry Victor Alves %J Journal of Applied Oral Science %D 2012 %I University of S?o Paulo %R 10.1590/S1678-77572012000200026 %X 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. %K orthodontics %K malocclusion %K palatal expansion technique. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1678-77572012000200026&lng=en&nrm=iso&tlng=en