02 Novembre 2018

Strength distribution on TMJ using mandibular advancement device for OSAS treatment: a finite element study

Original article

Giorgia Crivellin, Giovanni Bruno, Alberto De Stefani, Alida Mazzoli, Marco Mandolini, Agnese Brunzini, Antonio Gracco

Objective  The aim of this study is the evaluation of the temporomandibular joint stress distribution during the use of a Mandibular Advancement Device.
Materials and methods  This study is made using Finite Element Method (FEM). Dental casts, advancement bite, CBCT and MRI were taken in a 27-year-old woman. A Somnodent device was scanned and associated with a three-dimensional cranium.

FEM analysis was made using ANSYS software with 1 and 2 mm of advancement.
Results  The articular disc showed values range between 0.099-6.39 and 0.5-2.02 MPa for an advancement of 1 and 2 mm respectively. The condyle load distribution showed values range between 0.0037-7.50 and 0.0020-10.0 MPa for an advancement of 1 and 2 mm respectively.
Conclusions  Values obtained are significantly lower than limit values of the condyle and articular disc. Slight mandibular advancement can be consider a safe procedure even for the long period and should not cause permanent side effects.

Per continuare la lettura scaricare l'allegato.

doi: https://doi.org/10.19256/d.cadmos.09.2018.04


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