Angle Class I malocclusion with anterior open bite treated with extraction of permanent teeth

Abstract

This clinical case reports the orthodontic treatment of a Class I malocclusion with anterior open bite and bimaxillary dentoalveolar protrusion in a 28-year-old female patient. The treatment of choice was to perform tooth extractions followed by retraction of the anterior teeth, with consequent closure of the anterior open bite and better accommodation of the teeth on their bony bases. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO), representing the Category 2 -i.e., an Angle Class I malocclusion, with anterior open bite, treated with extraction of permanent teeth -, as part of the requisites to become a BBO diplomate.

Open bite malocclusion: An overview

“…Some authors have determined that open bite, or a tendency toward open bite, occurs when overbite is smaller than the normal. One school of thought argues that open bite is characterized by end-on incisal relationships, while the others school of thought stated that no incisal contact be present before diagnosing open bite [1][2][3][4][5]. Open bite was de ined by Subtelny and Sakuda [6], as open vertical dimension between the incisal edges of the maxillary and mandibular anterior teeth, although de iciency in vertical dental contact can occur between the anterior or the buccal segment.…”

Retração De Caninos: Uma Revisão De Literatura Com Observações Clínicas

“…Ao serem comparadas as cadeias elastoméricas com as molas de Niti, alguns autores relataram maior coeficiente de retração e maior velocidade quando se utilizada molas de Niti (CHAUDHARI, 2015;PITHON, 2013). Embora o tempo total necessário para fechamento do espaço não obteve uma diferença estatisticamente significante entre os materiais.…”

“…Considerando isso, a técnica de escolha depende do tipo de má oclusão, do conhecimento, da habilidade e da preferência do ortodontista. Dentre os fatores a serem considerados durante a retração dos dentes caninos está a magnitude de força gerada pelos dispositivos ortodônticos, que deve ser leve e preferencialmente constante, os aparelhos ortodônticos, não apenas para a retração de caninos, são os que apresentam a capacidade de aplicar forças leves e constantes (PITHON, 2013).…”