Finite element analysis of occlusal splint therapy in patients with bruxism

Abstract Background Bruxism is among the habits considered generally as contributory factors for temporomandibular joint (TMJ) disorders and its etiology is still controversial. Methods Three-dimensional models of maxilla and mandible and teeth of 37 patients and 36 control subjects were created usi...

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Main Authors: Seifollah Gholampour, Hanie Gholampour, Hamed Khanmohammadi
Format: Article
Language:English
Published: BMC 2019-09-01
Series:BMC Oral Health
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12903-019-0897-z
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spelling doaj-96c722cd1ee043d18843ed51c2802e092020-11-25T03:43:32ZengBMCBMC Oral Health1472-68312019-09-011911910.1186/s12903-019-0897-zFinite element analysis of occlusal splint therapy in patients with bruxismSeifollah Gholampour0Hanie Gholampour1Hamed Khanmohammadi2Department of Biomedical Engineering, North Tehran Branch, Islamic Azad UniversityDepartment of Electrical and Computer Engineering, Science and Research Branch, Islamic Azad UniversityDepartment of Biomedical Engineering, North Tehran Branch, Islamic Azad UniversityAbstract Background Bruxism is among the habits considered generally as contributory factors for temporomandibular joint (TMJ) disorders and its etiology is still controversial. Methods Three-dimensional models of maxilla and mandible and teeth of 37 patients and 36 control subjects were created using in-vivo image data. The maximum values of stress and deformation were calculated in 21 patients six months after using a splint and compared with those in the initial conditions. Results The maximum stresses in the jaw bone and head of mandible were respectively 4.4 and 4.1 times higher in patients than in control subjects. Similar values for deformation were 5.8 and 4.9, respectively. The maximum stress in the jaw bone and head of mandible decreased six months after splint application by up to 71.0 and 72.8%, respectively. Similar values for the maximum deformation were 80.7 and 78.7%, respectively. Following the occlusal splint therapy, the approximation of maximum deformation to the relevant values in control subjects was about 2.6 times the approximation of maximum stress to the relevant values in control subjects. The maximum stress and maximum deformation occurred in all cases in the head of the mandible and the splint had the highest effectiveness in jaw bone adjacent to the molar teeth. Conclusions Splint acts as a stress relaxer and dissipates the extra stresses generated as well as the TMJ deformation and deviations due to bruxism. The splint also makes the bilateral and simultaneous loading possible and helps with the treatment of this disorder through regulation of bruxism by creating a biomechanical equilibrium between the physiological loading and the generated stress.http://link.springer.com/article/10.1186/s12903-019-0897-zOcclusal splint therapyBruxismStressDeformationTemporomandibular joint (TMJ)Finite element method (FEM)
collection DOAJ
language English
format Article
sources DOAJ
author Seifollah Gholampour
Hanie Gholampour
Hamed Khanmohammadi
spellingShingle Seifollah Gholampour
Hanie Gholampour
Hamed Khanmohammadi
Finite element analysis of occlusal splint therapy in patients with bruxism
BMC Oral Health
Occlusal splint therapy
Bruxism
Stress
Deformation
Temporomandibular joint (TMJ)
Finite element method (FEM)
author_facet Seifollah Gholampour
Hanie Gholampour
Hamed Khanmohammadi
author_sort Seifollah Gholampour
title Finite element analysis of occlusal splint therapy in patients with bruxism
title_short Finite element analysis of occlusal splint therapy in patients with bruxism
title_full Finite element analysis of occlusal splint therapy in patients with bruxism
title_fullStr Finite element analysis of occlusal splint therapy in patients with bruxism
title_full_unstemmed Finite element analysis of occlusal splint therapy in patients with bruxism
title_sort finite element analysis of occlusal splint therapy in patients with bruxism
publisher BMC
series BMC Oral Health
issn 1472-6831
publishDate 2019-09-01
description Abstract Background Bruxism is among the habits considered generally as contributory factors for temporomandibular joint (TMJ) disorders and its etiology is still controversial. Methods Three-dimensional models of maxilla and mandible and teeth of 37 patients and 36 control subjects were created using in-vivo image data. The maximum values of stress and deformation were calculated in 21 patients six months after using a splint and compared with those in the initial conditions. Results The maximum stresses in the jaw bone and head of mandible were respectively 4.4 and 4.1 times higher in patients than in control subjects. Similar values for deformation were 5.8 and 4.9, respectively. The maximum stress in the jaw bone and head of mandible decreased six months after splint application by up to 71.0 and 72.8%, respectively. Similar values for the maximum deformation were 80.7 and 78.7%, respectively. Following the occlusal splint therapy, the approximation of maximum deformation to the relevant values in control subjects was about 2.6 times the approximation of maximum stress to the relevant values in control subjects. The maximum stress and maximum deformation occurred in all cases in the head of the mandible and the splint had the highest effectiveness in jaw bone adjacent to the molar teeth. Conclusions Splint acts as a stress relaxer and dissipates the extra stresses generated as well as the TMJ deformation and deviations due to bruxism. The splint also makes the bilateral and simultaneous loading possible and helps with the treatment of this disorder through regulation of bruxism by creating a biomechanical equilibrium between the physiological loading and the generated stress.
topic Occlusal splint therapy
Bruxism
Stress
Deformation
Temporomandibular joint (TMJ)
Finite element method (FEM)
url http://link.springer.com/article/10.1186/s12903-019-0897-z
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