Three-dimensional finite elemental analysis of zygomatic implants in craniofacial structures

Abstract

The objective of this study to analyze stress distribution in craniofacial structures of zygomatic osseointegrated implants.An integrated system for DICOM data was utilized to create a three-dimensional model of craniofacial structures. The stress analysis was merely comparative, allowing us to relate the amount and distribution of the main stresses.The stress analysis was performed using the three-dimensional finite elemental analysis method. The system allowed visual confirmation and analysis of stress distribution as well as the convenient and simple construction of a digital biomechanical model that provided details of anatomical structures in regions of interest. To compare zygomatic implants with or without connected implants supporting the superstructure. Stresses in severely resorbed maxillae with connected implants were not concentrated around the alveolar bone supporting zygomatic implants. Stresses without connected implants tended to be generated in the zygomatic bone, at the middle part of zygomatic implant and at the joint of the fixture-abutment.Stress due to occlusal forces is mainly supported by the zygomatic bone, is transferred predominantly through the infrazygomatic crest and is divided into the frontal and temporal process of the zygomatic bone in various directions.

Endoscopically-Assisted Zygomatic Implant Placement: A Novel Approach

“…Biomechanical models by three dimensional finite element analyses have shown that stress, due to occlusal forces, is mainly supported by the zygomatic bone, while it is not significantly influenced by the anatomical structure of the upper maxilla [18]. This concept is particularly relevant regarding transmission of forces exerted from the fixed prosthesis, since stress is not concentrated in the atrophied alveolar process of the maxilla.…”

Biomechanics of the Human Canine Pillar Based on its Geometry Using Finite Element Analysis

“…2B). The load magnitudes of superficial and deep masseter, medial pterigoid and anterior and middle fibers of temporal muscles (Korioth & Hannam, 1994;van Essen et al, 2005) are present in the Table I.…”

“…Functional morphology of skull pillars has been related to the force dissipation and stress distribution in the skull, as well as the bony response to stresses both functional chewing (Fanuscu & Caputo, 2004;Caroena et al, 2010;Lima et al, 2011) and applied to maxillofacial surgery (Popowics et al, 2004;Ujigawa et al, 2007;Lima et al). Currently, the known methods to evaluate the morphological bone adaptation are: the bone displacement direction by photorefractive holographic interferometry (Caroena et al, 2010), stress analysis in photoelastic method (Lima et al), press transducer (Popowics et al) and computer simulations using finite element analysis (FEA) (Ujigawa et al;Erkmen et al, 2009).…”

“…Currently, the known methods to evaluate the morphological bone adaptation are: the bone displacement direction by photorefractive holographic interferometry (Caroena et al, 2010), stress analysis in photoelastic method (Lima et al), press transducer (Popowics et al) and computer simulations using finite element analysis (FEA) (Ujigawa et al;Erkmen et al, 2009).…”

Avaliação das tensões geradas nos componentes protéticos de próteses obturadoras maxilares classe I, II e IV de Aramany por meio de análise de elementos finitos

“…Adicionalmente, a reprodutibilidade não afeta as propriedades físicas dos materiais envolvidos, e o experimento pode ser repetido quantas vezes o operador desejar (Rubin et al, 1982;Gao et al, 2006;Lotti et al, 2006;Ujigawa et al, 2007;Wakabayashi et al, 2008;Miyashita et al, 2012).…”