Three-dimensional finite element analysis of occlusal splint and implant connection on stress distribution in implant–supported fixed dental prosthesis and peri-implantal bone

Marsico, Vívian dos Santos; Lehmann, Roberto Brunow; Claro, Cristiane Aparecida de Assis; Amaral, Marina; Vitti, Rafael Pino; Neves, Ana Christina Claro; Silva-Concílio, Laís Regiane

doi:10.1016/j.msec.2017.05.071

Cited by 28 publications

(20 citation statements)

References 27 publications

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“…As bone cannot be considered a ductile material, von Mises stress cannot be calculated in the maxilla. In this case, principal stresses have to be employed and calculated although some published studies have not used this kind of stress [39,45,46]. This is the reason why it is difficult to compare the results obtained in the atrophic maxilla of this study with the results provided in the bone in other published studies.…”

Section: Discussionmentioning

confidence: 97%

“…According to physiological limits (ultimate stress), overloading in the cortical bone has been described as 170 MPa in compression and 100 MPa in tension [44]. Dos Santos et al [45] detailed in their study that cortical bone resorption occurred when stress was higher than 167 MPa. Based on these limits, the values observed in this model were lower than those considered physiologic to bone tissue.…”

Section: Discussionmentioning

confidence: 99%

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Implant Treatment in Atrophic Maxilla by Titanium Hybrid-Plates: A Finite Element Study to Evaluate the Biomechanical Behavior of Plates

Prados-Privado

Diederich²,

Prados-Frutos

2018

Metals

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A severely atrophied maxilla presents serious limitations for rehabilitation with osseointegrated implants. This study evaluated the biomechanical and long-term behavior of titanium hybrid-plates in atrophic maxilla rehabilitation with finite elements and probabilistic methodology. A three-dimensional finite element model based on a real clinical case was built to simulate an entirely edentulous maxilla with four plates. Each plate was deformed to become accustomed to the maxilla’s curvature. An axial force of 100 N was applied in the area where the prosthesis was adjusted in each plate. The von Mises stresses were obtained on the plates and principal stresses on maxilla. The difference in stress between the right and left HENGG-1 plates was 3%, while between the two HENGG-2 plates it was 2%, where HENGG means Highly Efficient No Graft Gear. A mean maximum value of 80 MPa in the plates’ region was obtained, which is a lower value than bone resorption stress. A probability cumulative function was computed. Mean fatigue life was 1,819,235 cycles. According to the results of this study, it was possible to conclude that this technique based on titanium hybrid-plates can be considered a viable alternative for atrophic maxilla rehabilitation, although more studies are necessary to corroborate the clinical results.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Implant Treatment in Atrophic Maxilla by Titanium Hybrid-Plates: A Finite Element Study to Evaluate the Biomechanical Behavior of Plates

Prados-Privado

Diederich²,

Prados-Frutos

2018

Metals

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“…The 3D models of the samples were standardized in terms of defining the x, y, and z axis with respect to the same reference in order to ensure the correct loading distribution for comparing the biomechanical parameters of the models with each other. Table 1 shows the material properties considered for jaw bones, teeth, and splints [20,42]. One of the most important points in FE analysis is how different parts of the model interact with each other.…”

Section: Methodsmentioning

confidence: 99%

“…MPa [43]. The average force exerted by the medial pterigoid muscle and masseter muscle for both of the left and right muscles was assumed to be 50 N [20,42]. It should be noted that, according to previous studies, the force of these muscles should be applied under a particular angle to the model, as shown in Fig 2a. One of the most important issues in numerical computer simulations is to ensure the mesh convergence of responses [44][45][46][47][48].…”

Section: Methodsmentioning

confidence: 99%

Finite element analysis of occlusal splint therapy in patients with bruxism

Gholampour

Khanmohammadi

2019

Preprint

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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.

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“…Also, in order to ensure the correct loading distribution for comparing the biomechanical parameters of the models with each other, the 3D models of the samples were standardized in terms of the definition of the x, y, and z axis relative to one same reference. Table 1 shows the material properties considered for jaw bones, teeth, and splints [20,40]. One of the most important points in FE analysis is how different parts of the model interact with each other.…”

Section: Methodsmentioning

confidence: 99%

Finite element method analysis of occlusal splint therapy in patients with bruxism

Gholampour

Khanmohammadi

2019

Preprint

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Background: In general, habits such as bruxism are 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 subject were made 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 the initial conditions. Results: The maximum stresses in the jaw bone and head of mandible in patients were 4.4 and 4.1 times higher than those in control subjects, respectively. Similar values for deformation were 5.8 and 4.9, respectively. Six months after splint application, the maximum stress in the jaw bone and head of mandible decreased by up to 71.0% and 72.8%, respectively. Similar values for the maximum deformation were 80.7% and 78.7%, respectively. With occlusal splint therapy, the approximation of the 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 generated stresses and especially the deformation and deviations of TMJ 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.

show abstract

Three-dimensional finite element analysis of occlusal splint and implant connection on stress distribution in implant–supported fixed dental prosthesis and peri-implantal bone

Cited by 28 publications

References 27 publications

Implant Treatment in Atrophic Maxilla by Titanium Hybrid-Plates: A Finite Element Study to Evaluate the Biomechanical Behavior of Plates

Implant Treatment in Atrophic Maxilla by Titanium Hybrid-Plates: A Finite Element Study to Evaluate the Biomechanical Behavior of Plates

Finite element analysis of occlusal splint therapy in patients with bruxism

Finite element method analysis of occlusal splint therapy in patients with bruxism

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