Finite element analysis of stresses in endodontically treated, dowel-restored teeth

Asmussen, Erik; Peutzfeldt, Anne; Sahafi, Alireza

doi:10.1016/j.prosdent.2005.07.003

Cited by 286 publications

(296 citation statements)

References 29 publications

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“…However, an excessively thick cement layer in that region 4 may not provide proper mechanical properties to withstand occlusal loading, as previously demonstrated by D'Arcangelo et al 5 (2007). Thus, considering that the maximum shear stress is primarily located at the post/cement/dentin interface, 6 a luting material with improved mechanical properties could resist occlusal loading, and other stresses generated by chewing forces, better than dual-cured resin cements. Moreover, dual-cure composite resin core build-up materials may be more appropriate for cementing pre-fabricated posts into root canals as they supposedly have better mechanical properties than dual-cured resin cements.…”

Section: Introductionmentioning

confidence: 99%

Effect of curing mode on the hardness of dual-cured composite resin core build-up materials

et al. 2010

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This study evaluated the Knoop Hardness (KHN) values of two dual-cured composite resin core build-up materials and one resin cement exposed to different curing conditions. Two dual-cured core buildup composite resins (LuxaCore  -Dual, DMG; and FluoroCore  2, Dentsply Caulk), and one dual-cured resin cement (Rely X ARC, 3M ESPE) were used in the present study. The composite materials were placed into a cylindrical matrix (2 mm in height and 3 mm in diameter), and the specimens thus produced were either light-activated for 40 s (Optilux 501, Demetron Kerr) or were allowed to self-cure for 10 min in the dark (n = 5). All specimens were then stored in humidity at 37°C for 24 h in the dark and were subjected to KHN analysis. The results were submitted to 2-way ANOVA and Tukey's post-hoc test at a pre-set alpha of 5%. All the light-activated groups exhibited higher KHN values than the self-cured ones (p = 0.00001), regardless of product. Among the self-cured groups, both composite resin core build-up materials showed higher KHN values than the dual-cured resin cement (p = 0.00001). LuxaCore  -Dual exhibited higher KHN values than FluoroCore  2 (p = 0.00001) when they were allowed to self-cure, while no significant differences in KHN values were observed among the light-activated products. The results suggest that dual-cured composite resin core build-up materials may be more reliable than dual-cured resin cements when curing light is not available.

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Section: Introductionmentioning

confidence: 99%

Effect of curing mode on the hardness of dual-cured composite resin core build-up materials

et al. 2010

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“…According to the literature 5,28,[37][38][39] , the stability of the post is related to its geometry. Conic or short posts, which did not achieve appropriate penetration into the root canal, have more probability of being extruded.…”

Section: Discussionmentioning

confidence: 99%

“…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%

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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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“…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). Thus, von Mises stresses were chosen for presentation of results.…”

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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Finite element analysis of stresses in endodontically treated, dowel-restored teeth

Cited by 286 publications

References 29 publications

Effect of curing mode on the hardness of dual-cured composite resin core build-up materials

Effect of curing mode on the hardness of dual-cured composite resin core build-up materials

Stress prediction in a central incisor with intra-radicular restorations

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

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