Vertical Root Fracture in Upper Premolars with Endodontic Posts: Finite Element Analysis

Santos, A.F.V.; Tanaka, Carina B.; Lima, Raúl González; Espósito, Camila O M; Ballester, Rafael Yagüe; Braga, Roberta da Rocha; Meira, Josete Barbosa Cruz

doi:10.1016/j.joen.2008.09.021

Cited by 44 publications

(47 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Resin post and cores fabricated with fiber posts have become widely used due to the development of new adhesive materials. Adhesion of resin post and cores to remaining dentin substrate is important for the integrity of resin core built-up teeth, and it is reported that the boding loss at the interface between resin core and dentin could increase the risk of root fracture in resin built-up teeth with fiber posts 12,13) . Additionally, fiber posts are expected to improve the mechanical properties of resin post and cores, and to increase the retentions of post and cores in the roots.…”

Section: Introductionmentioning

confidence: 99%

The influence of elastic moduli of core materials on shear stress distributions at the adhesive interface in resin built-up teeth

et al. 2017

View full text Add to dashboard Cite

This study aimed to investigate shear stress distributions in resin built-up teeth using resin composites of varying elastic moduli (E), with or without fiber posts. Three-dimensional mathematical models of a root-filled mandibular premolar tooth were constructed. Resin post and cores were built-up with resin composites of three different E: 12,000, 18,000 and 24,000 MPa, with or without fiber posts. Finite element linear analysis was performed to calculate shear stress distributions at bonding interface between resin core and dentin. Regardless of fiber post insertion, the shear stress on the cervical surface of resin core decreased as the E of resin composites increased. Insertion of fiber posts increased the shear stress on the post surface of resin core, with increases in the E of resin composites. In conclusion, using resin core materials with higher E decreased the shear stress at cervical interface between resin core and dentin regardless of fiber post insertion.

show abstract

Section: Introductionmentioning

confidence: 99%

The influence of elastic moduli of core materials on shear stress distributions at the adhesive interface in resin built-up teeth

et al. 2017

View full text Add to dashboard Cite

show abstract

“…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] . This allows one to pinpoint highly stressed regions where fracture is expected to initiate.…”

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

View full text Add to dashboard Cite

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.

show abstract

“…15 Bununla beraber, drill kullanımı sağ lam dentin dokusunun kaybına ve kök kı-rığı riskinin artmasına neden olmaktadır. 3 Oval kök kanallarının restorasyonunda ve sonrasında meydana gelen problemlerin önlenmesi için farklı post sistemleri dizayn edilmiştir. Oval kesite sahip prefabrike fiber postlar, postun oval kanallara adaptasyonunu artırmak ve retansiyon problemlerini ortadan kaldırmak için geliştirilmiştir (Ellipson oval fiber post; RTD/Satelec, Merignac, Fransa).…”

unclassified