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Master's Dissertation
DOI
https://doi.org/10.11606/D.61.2023.tde-01062023-161029
Document
Author
Full name
Luciano Reis de Araújo Carvalho
Institute/School/College
Knowledge Area
Date of Defense
Published
Bauru, 2023
Supervisor
Committee
Yaedú, Renato Yassutaka Faria (President)
Dias, Bruno Santos de Barros
Rego, Marcus Vinicius Neiva Nunes do
Ribeiro, Tiago Turri de Castro
Title in Portuguese
Relação da movimentação esquelética cirúrgica com as alterações das vias aéreas superiores em pacientes com fissura labiopalatina
Keywords in Portuguese
Cirurgia ortognática
Fissura palatina
Vias aéreas superiores
Abstract in Portuguese
Introdução: As cirurgias primárias de lábio e palato realizadas durante a infância podem possibilitar a formação normal da fala, oclusão e melhora da estética facial e autoestima, no entanto, uma parcela considerável dos pacientes com fissura labiopalatina (FLP) necessitará de cirurgia ortognática (CO), com impacto na dimensão das vias aéreas superiores (VAS). Objetivo: Avaliar as alterações 3D das VAS em pacientes com FLP unilateral após CO para correção de maloclusão esquelética classe III, correlacionar o grau de movimentação cirúrgica e as alterações nas VAS e verificar a variação da área seccional mínima (ASM) e do volume (V) aéreo superior. Material e Métodos: Foram analisadas 69 tomografias computadorizadas de feixe cônico (TCFC) de 23 pacientes com FLP não-sindrômicas submetidos a cirurgia bimaxilar para correção de maloclusão esquelética classe III. O V, a ASM e mensurações craniofaciais foram realizadas nos software NemoCeph e Dolphin em 3 tempos: pré-cirúrgico (T0), pós-cirúrgico de 1-3 dias (T1) e pós-cirúrgico de pelo menos 12 meses. Resultados: Apenas uma medida do Complexo Nasomaxilar, N-A (PHR), apresentou diferença estatisticamente significante na comparação entre T0 x T1. A Morfologia e posição mandibular, bem como a Dimensão vertical, não apresentaram diferenças estatisticamente significante em nenhuma das medidas avaliadas. Na Relação inter-maxilar, as duas medidas - ANB e Wits - apresentaram diferenças estatisticamente significante na comparação entre T0 e os demais tempos cirúrgicos. Foi observado diminuição não significativa da média do V de 16,00 cm³ (± 8,05) em T0 para 15,84 cm³ (±5,50) em T1 e para 13,60 cm³ (± 6,08) em T2, não havendo alterações estatisticamente significantes na ASM em T0 = 168,53 mm² (±117,95), T1 = 151,29 mm² (±67,59) e T2 = 113,62 mm² (±73,54). Correlações positivas entre Co-A com o V e ASM, entre Co-Gn e o V e entre N-Me e o V foram observadas em T1. Conclusão: No avanço maxilar e recuo mandibular, em pacientes com FLP unilateral, ocorreu diminuição volumétrica não significativa das VAS e da ASM, mesmo após 12 meses do procedimento cirúrgico, com correlação positiva entre o comprimento da maxila e o V e ASM, entre o comprimento do corpo da mandíbula e altura facial anterior total e o V.
Title in English
Relationship between surgical skeletal movement and upper airway changes in patients with cleft lip and palate
Keywords in English
Cleft palate
Orthognathic surgery
Upper airway
Abstract in English
Introduction: Primary surgeries of the lip and palate performed during childhood may allow for normal speech formation, occlusion and improvement of facial aesthetics and self-esteem, however, a considerable number of patients with cleft lip and palate (CLP) will require orthognathic surgery (OS), with an impact on the dimension of the upper airways (UA). Objective: To evaluate the 3D alterations of the UA in patients with unilateral CLP after OS for skeletal class III correction, correlate the degree of surgical movement and changes in the upper airways, and verify the variation in the minimum cross-sectional area (MCSA) and volume (V) of UA. Material and Methods: 69 cone-beam computed tomography (CBCT) scans of 23 patients with non-syndromic CLP who underwent bimaxillary surgery for class III correction were analyzed. V, MSA and craniofacial measurements were performed using NemoCeph and Dolphin software at 3 times: pre-surgery (T0), 1-3 days post-surgery (T1) and at least 12 months post-surgery. Results: Only one measurement of the Nasomaxillary Complex, N-A (PHR), showed a statistically significant difference when comparing T0 x T1. Mandibular morphology and position, as well as Vertical dimension, did not present statistically significant differences in any of the measures evaluated. Two measures - ANB and Wits - showed statistically significant differences in the comparison between T0 and the other surgical times. There was a non-significant decrease in the mean of V: 16.00 cm³ (± 8.05) at T0 to 15.84 cm³ (± 5.50) at T1 and to 13.60 cm³ (± 6.08) at T2. No statistically significant changes were found in MCSA at T0 = 168,53 mm² (±117,95), T1 = 151,29 mm² (±67,59) and T2 = 113,62 mm² (±73,54). Positive correlations between Co-A and V and MCSA, between Co-Gn and V and between N-Me and V were observed at T1. Conclusion: In maxillary advancement and mandibular setback, in patients with unilateral CLP, there was a non-significant volumetric decrease in UA and MCSA, even after 12 months of the surgical procedure, with a positive relationship between the length of the maxilla and the V and MCSA, and between the mandibular body length and total anterior facial height and the V.
 
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Publishing Date
2023-06-28
 
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