Posterior crossbite--treatment and stability.
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.
Department of Orthodontics, University of North Paraná, Londrina, PR, Brazil.
Renato Rodrigues de
RR
Almeida
Marcio Rodrigues de
MR
Almeida
Paula Vanessa Pedron
PV
Oltramari-Navarro
Ana Cláudia de Castro Ferreira
AC
Conti
Ricardo de Lima
Rde L
Navarro
Henry Victor Alves
HV
Marques
D002508:Cephalometry; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008310:Malocclusion / Q000000981:diagnostic imaging / Q000628:therapy*; D010155:Palatal Expansion Technique; D011862:Radiography, Panoramic; D013997:Time Factors; D016896:Treatment Outcome