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Biomechanical behavior of three maxillary expanders in cleft lip and palate: a finite element study

Patiño, Angela Maria Bautista ; Rodrigues, Monise de Paula ; Pessoa, Roberto Sales ; Rubinsky, Salomón Yezioro ; Kim, Ki Beom ; Soares, Carlos José ; Almeida, Guilherme de Araújo

Brazilian oral research, 2024, Vol.38, p.e010-e010 [Periódico revisado por pares]

Brazil: Sociedade Brasileira de Pesquisa Odontológica - SBPqO

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  • Título:
    Biomechanical behavior of three maxillary expanders in cleft lip and palate: a finite element study
  • Autor: Patiño, Angela Maria Bautista ; Rodrigues, Monise de Paula ; Pessoa, Roberto Sales ; Rubinsky, Salomón Yezioro ; Kim, Ki Beom ; Soares, Carlos José ; Almeida, Guilherme de Araújo
  • Assuntos: Adolescent ; Bone Screws ; Cleft Lip - diagnostic imaging ; Cleft Palate ; Cleft Palate - diagnostic imaging ; Cone-Beam Computed Tomography - methods ; DENTISTRY, ORAL SURGERY & MEDICINE ; Finite Element Analysis ; Humans ; Male ; Maxilla - diagnostic imaging ; Palatal Expansion Technique ; Palate - surgery
  • É parte de: Brazilian oral research, 2024, Vol.38, p.e010-e010
  • Notas: ObjectType-Case Study-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-4
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    ObjectType-Report-1
    ObjectType-Article-3
  • Descrição: This study evaluated the stress distribution in the dentoalveolar and palatal bone structures during maxillary expansion in a 17-year-old male patient with bilateral cleft lip and palate (BCLP) using expanders with dental (HYRAX) and skeletal anchorage (MARPE). For the generation of the specific finite element models, cone-beam computed tomography was used, and the DICOM files were exported to Mimics 3-Matic (Materialise) and Patran (MSC Software) software. Three specific three-dimensional models were generated: A) HYRAX: conventional four-banded hyrax screw (9 mm); B) MARPE-DS: 3 miniscrews (1.8 mm diameter - 5.4 mm length) and four-banded dental anchorage; and C) MARPE-NoDS: 3 miniscrews without dental anchorage. Maxillary expansion was simulated by activating the expanders transversely 1 mm on the "X" axis. HYRAX resulted in higher levels of deformation predominantly in the dentoalveolar region. MARPE-DS showed stress in the dentoalveolar region and mainly in the center of the palatal region, at approximately 4,000 με. MARPE-NoDS exhibited evident stress only in the palatal region. High stress levels in the root anchoring teeth were observed for HYRAX and MARPE-DS. In contrast, MARPE-NoDS cause stress on the tooth structure. The stress distribution from the expanders used in the BLCP showed asymmetric expansive behavior. During the initial activation phase of expansion, the HYRAX and MARPE-DS models produced similarly high strain at the dentoalveolar structures and upper posterior teeth displacement. The MARPE-NoDS model showed restricted strain on the palate.
  • Editor: Brazil: Sociedade Brasileira de Pesquisa Odontológica - SBPqO
  • Idioma: Inglês;Português
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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