Corono-radicular reconstruction of pulpless teeth: A mechanical study using finite element analysis

Pierrisnard, Laurent; Bohin, Frédéric; Renault, Patrick; Barquins, M.

doi:10.1067/mpr.2002.128376

Cited by 203 publications

(178 citation statements)

References 30 publications

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“…These stresses may occur as tensile, compressive, shear, or a stress combination known as equivalent von Mises stresses. von Mises stresses depend on the entire stress field and are a widely used indicator of the possibility of damage occurrence 10,16) . Thus, von Mises stresses were chosen for presentation of results, and maximum displacement and hydrostatic pressure were also calculated.…”

Section: ⅱ Materials and Methodsmentioning

confidence: 99%

Finite element analysis of maxillary central incisors restored with various post-and-core applications

Seo

Shon

Lee

et al. 2009

J Korean Acad Conserv Dent

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The purpose of this study was to investigate the effect of rigidity of post core systems on stress distribution by the theoretical technique, finite element stress-analysis method. Three-dimensional finite element models simulating an endodontically treated maxillary central incisor restored with a zirconia ceramic crown were prepared and 1.5 mm ferrule height was provided. Each model contained cortical bone, trabecular bone, periodontal ligament, 4 mm apical root canal filling, and post-and-core. Six combinations of three parallel type post (zirconia ceramic, glass fiber, and stainless steel) and two core (Paracore and Tetric ceram) materials were evaluated, respectively. A 50 N static occlusal load was applied to the palatal surface of the crown with a 60� angle to the long axis of the tooth. The differences in stress transfer characteristics of the models were analyzed. von Mises stresses were chosen for presentation of results and maximum displacement and hydrostatic pressure were also calculated. An increase of the elastic modulus of the post material increased the stress, but shifted the maximum stress location from the dentin surface to the post material. Buccal side of cervical region (junction of core and crown) of the glass fiber post restored tooth was subjected to the highest stress concentration. Maximum von Mises stress in the remaining radicular tooth structure for low elastic modulus resin core (29.21 MPa) was slightly higher than that for high elastic modulus resin core (29.14 MPa) in case of glass fiber post. Maximum displacement of glass fiber post restored tooth was higher than that of zirconia ceramic or stainless steel post restored tooth. [J Kor Acad Cons Dent 34(4): [324][325][326][327][328][329][330][331][332] 2009]

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Section: ⅱ Materials and Methodsmentioning

confidence: 99%

Finite element analysis of maxillary central incisors restored with various post-and-core applications

Seo

Shon

Lee

et al. 2009

J Korean Acad Conserv Dent

View full text Add to dashboard Cite

show abstract

“…These stresses may occur as tensile, compressive, shear or a stress combination known as equivalent von Mises stresses. Von Mises stresses depend on the entire stress field and are a widely used indicator of the possibility of damage occurrence (Pegoretti et al 2002, Pierrisnard et al 2002. As compressive strength of dentin is considerably higher than tensile strength, calculated tensile and von Mises stresses may be compared with the tensile strength of dentin to assess the risk of fracture (Asmussen et al 2005).…”

Section: Methodsmentioning

confidence: 99%

Farklı post ve kron materyalleri ile restore edilmiş endodontik tedavili maksiller santral kesici dişlerde stres dağılımı

Sevimay¹,

Ozyilmaz²,

Eraslan³

2015

Selcuk Dental Journal

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“…Intra-radicular posts have been used in restoration of teeth for decades, historically, with the main objective of increasing their strength, to protect them from root fractures [1][2][3][4] . However, some investigations have demonstrated that root post transmits masticatory loads to the tooth root and supporting structures [5][6][7][8][9] . Accordingly, research works related to the biomechanics of dental materials have been carried out to evaluate the effect of masticatory loads on the stress distribution within endodontically treated teeth restored with intra-radicular posts [10][11][12][13][14][15][16][17][18][19] .…”

Section: Introductionmentioning

confidence: 99%

“…The fi nite element method (FEM) has been used for stress and strain analysis in dental biomechanics for nearly four decades [2][3][4][5][6][9][10][11][12]30,31 . The subdivision of the structure allows one to determine the stress distribution and hence to identify highly stressed regions where cracks are most likely to nucleate and, eventually, lead to partial or total fracture of the restored tooth.…”

Section: Introductionmentioning

confidence: 99%

Stress prediction in a central incisor with intra-radicular restorations

et al. 2011

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A 2D fi nite element analysis was applied to calculate shear and von Mises equivalent stresses developed, under masticatory loading, in an upper central incisor restored with cast gold post and carbon fi ber reinforced epoxy resin post. Based on the predicted shear stress levels, it is concluded that the gold post model is more prone to shear failure along the post-dentin interface. Whereas shear stress concentration also occurs in both models at the core-crown interface, the stress level predicted there is higher for the carbon fi ber post model which would be more susceptible to crown displacement. Finally, the prediction of von Mises equivalent stress indicates a nonuniform distribution, with the stress preferentially concentrated in the gold post along its interface with the tooth dentin. For the carbon fi ber post restored model, on the other hand, the von Mises stresses are more uniformly distributed achieving its maximum level in the tooth dentin.

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Corono-radicular reconstruction of pulpless teeth: A mechanical study using finite element analysis

Cited by 203 publications

References 30 publications

Finite element analysis of maxillary central incisors restored with various post-and-core applications

Finite element analysis of maxillary central incisors restored with various post-and-core applications

Farklı post ve kron materyalleri ile restore edilmiş endodontik tedavili maksiller santral kesici dişlerde stres dağılımı

Stress prediction in a central incisor with intra-radicular restorations

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