The three‐dimension finite element analysis of stress in posterior tooth residual root restored with postcore crown

Fu, Gang; Deng, Feng; Wang, Lu; Ren, Aishu

doi:10.1111/j.1600-9657.2009.00829.x

Cited by 25 publications

(28 citation statements)

References 22 publications

(31 reference statements)

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“…To show the distributions of Von Mises stress and tensile stress in residual dentin, stress was visualized using color images of geometrical models as shown in Figs. [8][9][10][11][12]. A dark blue area represents an unstressed region, whereas a red area represents a maximally stressed region.…”

Section: The Primary Focus Of Simulation Results Was On Vonmentioning

confidence: 99%

“…5). It was also assumed that all component parts were bonded, and bonding was achieved by merging nodes at the bonded areas with compatible mesh 2,10,18) .…”

Section: Mesh Generationmentioning

confidence: 99%

“…To date, three-dimensional (3D) finite element models have been employed for anterior monoradicular teeth with a simple geometry. However, few research works have used FEM to study posterior teeth restored with post-core crowns, such as analyzing the influences of binding material, loading direction, number, length, and material of posts on stress magnitude and distribution in maxillary molar restored with post-core crown 10) . Today, diverse materials and methods are available for endodontic treatment of teeth without crowns.…”

Section: Introductionmentioning

confidence: 99%

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A three-dimensional finite element analysis of the effects of restorative materials and post geometry on stress distribution in mandibular molar tooth restored with post-core crown

et al. 2012

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Section: The Primary Focus Of Simulation Results Was On Vonmentioning

confidence: 99%

“…5). It was also assumed that all component parts were bonded, and bonding was achieved by merging nodes at the bonded areas with compatible mesh 2,10,18) .…”

Section: Mesh Generationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A three-dimensional finite element analysis of the effects of restorative materials and post geometry on stress distribution in mandibular molar tooth restored with post-core crown

et al. 2012

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“…-Luting agent for crown -Panavia F Resin cement 16 Each finite element model was divided into small elements. Each element was interconnected at a number of discrete points called nodes.…”

mentioning

confidence: 99%

“…Also, both the models were restored with PFM crown. 16 It has been observed by various studies that the normal bite force ranges from 200 to 300 N, with maximum bite force reaching up to 700 N during parafunction. 32 Hence, in order to evaluate stresses in normal and parafunctional situations, load considered for the purpose of study were 300, 400, and 500 N. Also, loads were observed in both axial (0°) and nonaxial (15°, 45°) directions in order to simulate oral conditions.…”

mentioning

confidence: 99%

A Three-dimensional Finite Element Analysis of Stress Distribution in the Cortical Bone in Single Tooth Implant and Post Core-treated Tooth subjected to variable Loads

Rao¹,

Arora²,

Hameed³

2017

International Journal of Prosthodontics and Restorative Dentistry

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Purpose: In spite of many advances in the field of prosthetic dentistry, the choice of whether to treat and retain a grossly compromised tooth or to extract and replace with an implant is debatable. Alveolar bone preservation is one of the main criteria to select the treatment option. This is directly affected by the stress generated in the cortical bone under variable loads and is therefore, relevant. Materials and methods:Two three-dimensional finite element models were generated in relation to maxillary second premolar using ANSYS software. Model-I was parallel-tapered titanium implant with screw-retained titanium abutment and porcelain fused to metal (PFM) crown. Model-P was fiber post and composite resin core with PFM crown. Luting cement was resin cement. Both the models were surrounded by homogeneous and isotropic cortical and cancellous bone, and were subjected to variable loads of 300, 400, and 500 N in axial (0°) and nonaxial (15°, 45°) directions. Results: Stress in the cortical bone in megapascal (MPa) inModel-I/Model-P when subjected to variable loads in newtons (N) in axial direction was 300 N -37.6 MPa/47.3 MPa; 400 N -50.2 MPa/63.0 MPa; 500 N -62.7 MPa/63.0 MPa. 15°-300 N -68.5 MPa/65.9 MPa; 400 N -91.3 MPa/87.9 MPa; 500 N -114.2 MPa/87.9 MPa. 45° -300 N -136.3 MPa/88.9 MPa; 400 N -181.8 MPa/118.5 MPa; 500 N -227.2 MPa/118.5 MPa. Conclusion:Within the limitation of this study, it was concluded that on axial loading, both the treatment modalities showed no significant difference, but on nonaxial loading, the cortical bone in the implant model showed to have considerably higher stress than post core-treated tooth model. Hence, given a choice, this study favors retaining and restoring a compromised tooth with post core and crown rather than extracting and replacing with an implant.

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Brief communication: Comparing loading scenarios in lower first molar supporting bone structure using 3D finite element analysis

Benazzi¹,

Kullmer²,

Grosse³

et al. 2011

American J Phys Anthropol

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Finite element analysis (FEA) is a widespread technique to evaluate the stress/strain distributions in teeth or dental supporting tissues. However, in most studies occlusal forces are usually simplified using a single vector (i.e., point load) either parallel to the long tooth axis or oblique to this axis. In this pilot study we show how lower first molar occlusal information can be used to investigate the stress distribution with 3D FEA in the supporting bone structure. The LM(1) and the LP(2) -LM(1) of a dried modern human skull were scanned by μCT in maximum intercuspation contact. A kinematic analysis of the surface contacts between LM(1) and LP(2) -LM(1) during the power stroke was carried out in the occlusal fingerprint analyzer (OFA) software to visualize contact areas during maximum intercuspation contact. This information was used for setting the occlusal molar loading to evaluate the stress distribution in the supporting bone structure using FEA. The output was compared to that obtained when a point force parallel to the long axis of the tooth was loaded in the occlusal basin. For the point load case, our results indicate that the buccal and lingual cortical plates do not experience notable stresses. However, when the occlusal contact areas are considered, the disto-lingual superior third of the mandible experiences high tensile stresses, while the medio-lingual cortical bone is subjected to high compressive stresses. Developing a more realistic loading scenario leads to better models to understand the relationship between masticatory function and mandibular shape and structures. Am J Phys Anthropol, 2012. © 2011 Wiley Periodicals, Inc.

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The three‐dimension finite element analysis of stress in posterior tooth residual root restored with postcore crown

Abstract: The number, length, material of posts, bonding material and loading angle all have influence on the magnitude and distribution of stress. The influence of loading angle is most apparent.

Cited by 25 publications

References 22 publications

A three-dimensional finite element analysis of the effects of restorative materials and post geometry on stress distribution in mandibular molar tooth restored with post-core crown

A three-dimensional finite element analysis of the effects of restorative materials and post geometry on stress distribution in mandibular molar tooth restored with post-core crown

A Three-dimensional Finite Element Analysis of Stress Distribution in the Cortical Bone in Single Tooth Implant and Post Core-treated Tooth subjected to variable Loads

Brief communication: Comparing loading scenarios in lower first molar supporting bone structure using 3D finite element analysis

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