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Título
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Three-dimensional morphological characterization of malocclusions with mandibular lateral displacement using cone-beam computed tomography
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Description
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Objetivo: El propósito de este estudio fue evaluar las características morfológicas de las maloclusiones de MLD utilizando imágenes 3D. Materiales y métodos: las características de MLD se examinaron utilizando datos CBCT en 40 sujetos. Se desarrolló un análisis cefalométrico 3D para describir la posición espacial de la mandíbula y los huesos temporales. Resultados: Las alturas dentales verticales fueron más cortas y el plano oclusal posterior (POP) presentó una inclinación sagital más pronunciada en el lado desplazado (el lado del mentón óseo desplazado lateralmente) que en el lado contralateral. ( p < 0,01). El MLD se relacionó con un POP Cant superiormente inclinado en la misma dirección ( r = 0,82; p < 0,01). El cóndilo lateral desplazado estaba dislocado medialmente y era más pequeño. La inclinación sagital del hueso temporal mostró una inclinación más anterior y medial en el lado contralateral ( p < 0,01). Conclusiones: Una disminución unilateral en la altura vertical de la dentición y las posteriores inclinaciones más pronunciadas del plano oclusal se correlacionaron con (1) desplazamiento rotacional mandibular y desplazamiento lateral condilar, (2) cambios morfológicos mandibulares y condilares (3) cambios en la posición del hueso temporal.
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Relation
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Grupo de Ciencias Odontológicas Unicoc
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Creator
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Velasquez Torres, Roberto Luis
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Coro, Jorge C.
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Londoño, Alejandra
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McGorray, Susan P.
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Wheeler, Timothy T.
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Sato, Sadao
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Mediator
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Centro de Investigación Colegio Odontológico - CICO
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Date Issued
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2017-03-16
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Abstract
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Objective: The purpose of this study was to evaluate the morphologic characteristics of MLD malocclusions using 3D imaging. Materials and methods: MLD characteristics were examined using CBCT data in 40 subjects. A 3D Cephalometric analysis was developed to describe the spatial position of the mandible and temporal bones. Results: Vertical dental heights were shorter and the posterior occlusal plane (POP) presented a steeper sagittal inclination on the shifted side (the side of the laterally displaced bony chin) than on the contralateral side. (p < 0.01). The MLD was related to a superiorly inclined POP Cant in the same direction (r = 0.82; p < 0.01). The shifted side condyle was dislocated medially and was smaller. Temporal bone sagittal inclination showed a more forward and medial inclination on the contralateral side (p < 0.01). Conclusions: A unilateral decrease in the vertical height of the dentition and the subsequent steeper occlusal plane inclinations correlated with (1) mandibular rotational displacement and condylar lateral displacement, (2) mandibular and condylar morphologic changes (3) changes in temporal bone position.
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Extent
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13 pp.
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Format
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application/pdf
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issn
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0886-9634
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2151-0903
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Lenguaje
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Inglés
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Publisher
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Taylor & Francis
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page end
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155
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issue
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3
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page start
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143
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Fuente
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CRANIO: The Journal of Craneomandibular & Sleep Practice
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Journal of Craniomandibular Practice
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Repositorio Institucional Unicoc - RI-Unicoc
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volume
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36
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Is Part Of
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CRANIO: The Journal of Craneomandibular & Sleep Practice, ISSN: 0886-9634; ISSN: 2151-0903, Vol. 36, No. 3, (2017), pp. 143-155
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Access Rights
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restrictedAccess
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Bibliographic Citation
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primary topic
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Research Subject Categories::ODONTOLOGY::Orthodontics
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Subject
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Facial asymmetry
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Malocclusion
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Mandible
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Vertical dimension
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Occlusal plane
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Asimetría facial
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Maloclusión
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Mandíbula
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Dimensión vertical
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Plano oclusal
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Alternative Title
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Caracterización morfológica tridimensional de maloclusiones con desplazamiento lateral mandibular mediante tomografía computarizada de haz cónico
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Tipo
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Artículo
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current project
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Grupo de Ciencias Odontológicas Unicoc
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number of pages
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13 pp.
