Your browser doesn't support javascript.
loading
New highlights on effects of rapid palatal expansion on the skull base: a finite element analysis study.
Sevillano, Manuel Gustavo Chávez; Kemmoku, Daniel Takanori; Noritomi, Pedro Yoshito; Fernandes, Luciana Quintanilha Pires; Capelli Junior, Jonas; Quintão, Cátia.
Afiliação
  • Sevillano MGC; Universidad Nacional Mayor de San Marcos, Facultad de Odontología, Departamento de Estomatologia Pediatrica (Lima, Peru).
  • Kemmoku DT; Universidade do Estado do Rio de Janeiro, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil).
  • Noritomi PY; Centro de Tecnologia da Informação Renato Archer, Núcleo de Tecnologias Tridimensionais (Campinas/SP, Brazil).
  • Fernandes LQP; Centro de Tecnologia da Informação Renato Archer, Núcleo de Tecnologias Tridimensionais (Campinas/SP, Brazil).
  • Capelli Junior J; Universidade do Estado do Rio de Janeiro, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil).
  • Quintão C; Universidade do Estado do Rio de Janeiro, Departamento de Ortodontia (Rio de Janeiro/RJ, Brazil).
Dental Press J Orthod ; 26(6): e2120162, 2021.
Article em En | MEDLINE | ID: mdl-34932710
OBJECTIVE: The objective of this study was to evaluate the effect of the rapid palatal expansion (RPE) on the pterygoid process (PP), spheno-occipital synchondrosis (SOS) and sella turcica (ST) in the skull of a patient with transversal maxillary collapse, and identify the distribution of mechanical stresses and displacement, by finite element analysis (FEA). METHODS: Cone-beam computed tomography (CBCT) was employed to examine the skull of a patient in this study. The patient was a 13-year-old boy, with Class II skeletal relationship due to transverse atresia and maxillary protrusion. The computer-aided design (CAD) geometry of skull was imported into the SimLab v. 13.1 software, to build the finite element mesh. For the simulation, a displacement of 1 mm, 3 mm and 5 mm in a transverse direction was defined at the midpalatal suture, thereby representing the RPE. For the analysis of results, maximum principal stress (MPS) and displacements were evaluated by identifying different nodes, which were represented by the points as per the areas of interest in the study. RESULTS: In MPS, the maximum tensile stress was found at point 2 (366.50 MPa) and point 3 (271.50 Mpa). The maximum compressive stress was found at point 8 (-5.84 Mpa). The higher displacements in the transversal plane and the lateral segment were located at point 1 (2.212 mm), point 2 (0.903 mm) and point 3 (0.238 mm). CONCLUSIONS: RPE has a direct effect on PP, SOS and ST in the Class II model skeletal relationship with a transversal maxillary collapse. PP supported a higher tensile stress and displacement.
Assuntos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Palato / Técnica de Expansão Palatina Tipo de estudo: Prognostic_studies Limite: Adolescent / Humans / Male Idioma: En Revista: Dental Press J Orthod Ano de publicação: 2021 Tipo de documento: Article País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Palato / Técnica de Expansão Palatina Tipo de estudo: Prognostic_studies Limite: Adolescent / Humans / Male Idioma: En Revista: Dental Press J Orthod Ano de publicação: 2021 Tipo de documento: Article País de publicação: Brasil