Avaliação cefalométrica e tridimensional das vias aéreas superiores posteriores após avanço maxilo-mandibular
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Data
2011-04-08
Autores
Carvalho, Abrahão Cavalcante Gomes de Souza [UNESP]
Título da Revista
ISSN da Revista
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Objetivo: O objetivo deste estudo é avaliar comparativamente as alterações cefalométricas e tridimensionais das vias aéreas de pacientes submetidos à cirurgia ortognática de avanço maxilo-mandibular. Material e Métodos: Foram selecionados 20 pacientes com deformidade dento-facial de classe II, com deficiência maxilomandibular que foram submetidos à cirurgia de avanço maxilo-mandibular. Os pacientes tiveram um período pós-operatório de no mínimo 6 meses. Foram realizadas tomografias computadorizadas de feixe cônico nos períodos pré-operatório (T1), pósoperatório imediato, até quinze dias após a cirurgia (T2) e pós-operatório tardio, pelo menos 6 meses após a cirurgia (T3). Foi realizada a quantificação linear, de área e de volume das vias aéreas superiores posteriores, e comparado com o movimento real alcançado com a técnica cirúrgica dos dois tempos pós-operatórios. Resultados: Nos resultados, o movimento de avanço maxilo-mandibular proporcionou um ganho de vias aéreas em todas as análises, com diferença estatisticamente significativa entre os períodos T2 e T1, e T3 e T1, com um valor de p<0,05. No entanto, ao comparar os períodos T2 e T3, houve uma diferença estatisticamente significativa para as análises de área e de volume, comprovando uma recidiva parcial do ganho em via aérea alcançado em T2. Conclusões: Finalmente, podemos concluir que o avanço maxilo-mandibular é uma técnica cirúrgica que proporciona um ganho linear, de área e volume de vias aéreas superiores posteriores nos períodos pós-operatório imediato e após seis meses, no entanto, o ganho em vias aéreas apresenta uma recidiva parcial em períodos tardios. Também pudemos concluir que a avaliação de vias aéreas através de uma análise cefalométrica linear pode trazer resultados limitados quando comparados aos estudos de área e volume dessa região anatômica
Objective: The purpose of this study is to quantify cephalometric and tridimensional alterations of the posterior airway space of patients undergoing orthognathic surgery of maxillomandibular advancement. Material and Methods: 20 patients were standardized selected with dentofacial deformity of class II, with maxillomandibular deficiency, treated by maxillomandibular advancement. The minimal postoperative period was 6 months. Cone-Beam Computed Tomography were performed in 3 distinct periods of the treated patients, preoperative (T1), immediate postoperative period, until 15 days after surgery (T2), and late postoperative period, at least 6 months after surgery. The posterior airway space were quantified in each period of each patient, and the results were compared with the real movement achieved with the surgical technique employed. Results: In the results, the maxillomandibular advancement promoved an increase on posterior airway space of each patient, in all the analysis performed, with a significantly statistic difference between T2 and T1, and between T3 and T1, p<0,05. However, there was a statistic difference between T2 and T3 in the area and volume analysis, what means that the airway space comes narrow after 6 months when compared with the immediate postoperative period. Conclusions: Finally, the maxillomandibular advancement performed a great linear, area and volume increase in posterior airway space in immediate and late postoperative period, however, there is a partial loss of the increased space after 6 months. Also the linear analysis of airway spaces has limited results when compared with area and volume analysis
Objective: The purpose of this study is to quantify cephalometric and tridimensional alterations of the posterior airway space of patients undergoing orthognathic surgery of maxillomandibular advancement. Material and Methods: 20 patients were standardized selected with dentofacial deformity of class II, with maxillomandibular deficiency, treated by maxillomandibular advancement. The minimal postoperative period was 6 months. Cone-Beam Computed Tomography were performed in 3 distinct periods of the treated patients, preoperative (T1), immediate postoperative period, until 15 days after surgery (T2), and late postoperative period, at least 6 months after surgery. The posterior airway space were quantified in each period of each patient, and the results were compared with the real movement achieved with the surgical technique employed. Results: In the results, the maxillomandibular advancement promoved an increase on posterior airway space of each patient, in all the analysis performed, with a significantly statistic difference between T2 and T1, and between T3 and T1, p<0,05. However, there was a statistic difference between T2 and T3 in the area and volume analysis, what means that the airway space comes narrow after 6 months when compared with the immediate postoperative period. Conclusions: Finally, the maxillomandibular advancement performed a great linear, area and volume increase in posterior airway space in immediate and late postoperative period, however, there is a partial loss of the increased space after 6 months. Also the linear analysis of airway spaces has limited results when compared with area and volume analysis
Descrição
Palavras-chave
Ortodontia, Cefalometria, Orthodontics, Cephalometry
Como citar
CARVALHO, Abrahão Cavalcante Gomes de Souza. Avaliação cefalométrica e tridimensional das vias aéreas superiores posteriores após avanço maxilo-mandibular. 2011. 89 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Odontologia de Araçatuba, 2011.