Efeitos, ao longo prazo, da expansão rápida da maxila sobre a largura da cavidade nasal/ Long-term effects of rapid maxillary expansion on nasal cavity width
DOI:
https://doi.org/10.34119/bjdv7n10-378Keywords:
Crescimento e desenvolvimento, Expansão maxilar, ossos nasais.Abstract
Considerando a forte relação dos ossos maxilares com as estruturas nasais, foi possivel verificar as alterações ocorridas na cavidade nasal decorrentes do tratamento da deficiência maxilar transversa com expansão rápida da maxila. Foram avaliados, ao longo prazo, 240 radiografias cefalométricas em norma lateral e póstero-anterior, de 30 indivíduos com dentição mista, maloclusão Classe I, sendo 12 do gênero masculino e 18 do feminino, tratados exclusivamente com expansão rápida da maxila (CEP: 4.134.275). A média de idade destes indivíduos foi dos 8 anos e 2 meses, que corresponde ao pré-tratamento até os 20 anos e 7 meses que corresponde ao acompanhamento ao logo prazo. O grupo controle (C) foi a amostra do “Bolton Standards of Dentofacial Developmental Growth”. O erro intra-examinador foi de 0,20% e as analises estatisticas foram o teste “t” de Student pareado e one-sample “t” test, ambos com significância de p<0,05. Os resultados mostraram que nos momentos pós-tratamento, o crescimento transverso da maxila no grupo que recebeu tratamento foi aproximadamente 2,0mm maior do que o crescimento do grupo controle. A largura nasal apresentou aumento de 2,33mm após a intervenção com expansão maxilar e continuou havendo aumento de 1,69mm no momento T3 e 1,96mm no momento T4, sendo estes aumentos estatisticamente significativos quando comparados ao grupo controle. Foi possível concluir que o crescimento transverso da maxila no grupo que recebeu tratamento foi mais pronunciado do que o crescimento do grupo controle. A largura nasal mostrou aumento progressivo, devido ao crescimento, porém a expansão rápida da maxila proporcionou uma maior largura nasal, que pode favorecer a respiração por esta via.
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