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Anterior open bite affects the child population by approximately 20%, with great aesthetic-functional impairment due to dental-skeletal changes, which may involve the presence of posterior crossbite. The objective was to present the anterior open bite correction associated with posterior crossbite with the use of a removable palatal crib. Patient during the mixed dentition phase presented an anterior open bite caused by a pacifier sucking habit and secondary lingual interposition. The treatment protocol consisted of the use of removable expander with palatal crib and nocturnal use of the chincup. The anterior open bite was corrected, and the best transverse relation of the arches was obtained. The precocious treatment using the palatal crib associated to the chincup allows to achieve favorable results in the resolution of the anterior open bite. Keywords: Open Bite. Malocclusion. Orthodontics, Interceptive. ResumoA mordida aberta anterior acomete a populacao infantil em aproximadamente 20%, com grande comprometimento estetico-funcional em decorrencia das alteracoes dentoesqueleticas, podendo envolver a presenca de mordida cruzada posterior. O objetivo do estudo foi apresentar a correcao da mordida aberta anterior associada a mordida cruzada posterior com a utilizacao de grade palatina removivel. Paciente em fase de dentadura mista, apresentava mordida aberta anterior ocasionada por um habito de succao de chupeta e interposicao lingual secundaria. O protocolo de tratamento consistiu na utilizacao de expansor removivel com grade palatina e uso noturno da mentoneira. A mordida aberta anterior foi corrigida e melhor relacao transversal dos arcos foi obtida. O tratamento precoce utilizando grade palatina associada a mentoneira permite alcancar resultados favoraveis na resolucao da mordida aberta anterior. Palavras-chave: Mordida Aberta. Ma Oclusao. Ortodontia Interceptora.

Correction of Anterior Open Bite Malocclusion with the Association of Removable Palatal Crib and Chincup