Estabilidade esquelética da multisegmentação maxilar

Detalhes bibliográficos
Ano de defesa: 2014
Autor(a) principal: Mello, Patrícia Bicalho de [UNESP]
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Tese
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Estadual Paulista (Unesp)
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://hdl.handle.net/11449/123837
http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/19-05-2015/000830064.pdf
Resumo: The present study was undertaken to collaborate with up to date knowledge about the stability of maxillary multisegmentation that presents itself quite controversially in literature. Aspects related to skeletal stability were studied verifying the possible involvement of instability with the extent and direction of surgical movements performed and age. CBCT scanned before and after orthognathic surgery with maxillary osteotomy Y-shaped in 3 segments of 30 subjects at three different times were analyzed ( T1 - pre-surgery, T2 - immediate post operative and T3 - at least 11 months follow up) . Pre and postoperative CT volumes were superimposed using the base of the skull as a reference for all patients. After segmenting the maxilla, quantification of displacements between models at different moments was performed. The mean values of the desplacements and their respective confidence intervals were determined by nonparametric resampling; Man-Witney for double comparisons and Kruskal-Wallis for multiple comparisons. To measure the correlation, Spearman coefficient was calculated. As the displacement increase the instability increase; the correlation of instability with age and follow-up were very small.