Fractures of posterior teeth in adults

Eakle, W. Stephan; Maxwell, Edward H.; Braly, Benjamin V.

doi:10.14219/jada.archive.1986.0344

Cited by 114 publications

(96 citation statements)

References 7 publications

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“…42 Therefore, adhesive restorations are useful to reinforce the tooth weaken by cavity preparation. 43 The findings of the present study are consistent with those of previous investigations 45,46,47 , which consider that acid etching and adhesive techniques do reinforce dental structure in a way that the stiffness values of restored teeth approximate the values of sound teeth. Ceramic inlays with 1/2 or 1/3 of the intercuspal distance, luted with resin cements, can recover tooth strength near that of intact teeth.…”

Section: Discussionsupporting

confidence: 92%

“…found in their study that fewer fractures occur in teeth if cavity preparation is conservative. 47 The findings of present study, between fracture resistance of intact unprepared tooth and tooth restored with Bulk fill hybrid composite resin were in accordance with the studies done by Jensen et al, 46 Ausiello et al, 49 Dalpino et al and de Freitas et al 50 reported no significant difference in fracture resistance between intact teeth and teeth restored with composite resin. De Freitas et al 50 investigated the effect of various adhesive restorative techniques on fracture resistance of maxillary premolars.…”

Section: Discussionsupporting

confidence: 91%

See 1 more Smart Citation

A Comparative Study To Evaluate The Fracture Resistance of Posterior Teeth Restored With Ceramic Inlay And Hybrid Composite Restoration – An In-Vitro Study.

Kala¹,

Shailat²

2017

IOSR JDMS

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 91%

A Comparative Study To Evaluate The Fracture Resistance of Posterior Teeth Restored With Ceramic Inlay And Hybrid Composite Restoration – An In-Vitro Study.

Kala¹,

Shailat²

2017

IOSR JDMS

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“…2 According to independent clinical surveys, over 90 percent of fractured teeth have been previously restored. 2,3 The problem is so prominent that it has been coined the "cracked tooth August 7, 2002. syndrome" (see, for example, Ref. 4).…”

Section: Introductionmentioning

confidence: 99%

Fatigue and fracture of bovine dentin

Arola

Rouland

Zhang

2002

Experimental Mechanics

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ABSTRACT-In this paper, the fatigue and fracture properties of bovine dentin are evaluated using in vitro experimental analyses. Double cantilever beam (DCB) specimens were prepared from bovine maxillary molars and subjected to zeroto-tension cyclic loads. The fatigue crack growth rate was evaluated as a function of the dentin tubule orientation using the Paris law. Wedge-loaded DCB specimens were also prepared and subjected to monotonic opening loads. Moiré interferometry was used to acquire the in-plane displacement field during stable crack growth, and the instantaneous wedge load and crack length were acquired to evaluate the crack growth resistance and crack tip opening displacement (CTOD) with crack extension. The rate of fatigue crack growth was generally larger for crack propagation occurring perpendicular to the dentin tubules. The Moiré fringe fields documented during monotonic crack growth exhibited non-linear deformation occurring within a confined region adjacent to the crack tip. Both the wedge load and CTOD response provided evidence that a fracture process zone contributes to energy dissipation during crack extension and that dentin exhibits a rising R-curve behavior. Results from this preliminary investigation are being used as a guide for an evaluation of the fatigue and fracture properties of human dentin.

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“…1c). Earlier clinical studies (Cavel et al, 1985;Eakle et al, 1986;Khers et al, 1990;Qian et al, 2013) suggest that cuspal anatomy plays a critical role in the fracture potential of cusps, and a higher fracture frequency is found in nonfunctional cusps than in functional cusps. One possible reason suggested is that the nonfuctional cusp is often smaller and may be more prone to fracture because of its size (Khers et al, 1990) and that occlusal force applied to these cusps will probably have a greater lateral component leading to cuspal fracture (Cavel et al, 1985) which could partly explain why the buccal cusp deforms less than the lingual cusp.…”

mentioning

confidence: 99%

Numerical simulation of the fracture process in ceramic FPD frameworks caused by oblique loading

Kou

Qiao

Chen

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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Finite element analysisFixed partial denture Fracture process Numerical simulationOblique loading a b s t r a c t Using a newly developed three-dimensional (3D) numerical modeling code, an analysis was performed of the fracture behavior in a three-unit ceramic-based fixed partial denture (FPD) framework subjected to oblique loading. All the materials in the study were treated heterogeneously; Weibull's distribution law was applied to the description of the heterogeneity. The Mohr-Coulomb failure criterion with tensile strength cut-off was utilized in judging whether the material was in an elastic or failed state. The simulated loading area was placed either on the buccal or the lingual cusp of a premolar-shaped pontic with the loading direction at 301, 451, 601, 751 or 901 angles to the occlusal surface. The stress distribution, fracture initiation and propagation in the framework during the loading and fracture process were analyzed. This numerical simulation allowed the cause of the framework fracture to be identified as tensile stress failure. The decisive fracture was initiated in the gingival embrasure of the pontic, regardless of whether the buccal or lingual cusp of the pontic was loaded. The stress distribution and fracture propagation process of the framework could be followed step by step from beginning to end. The bearing capacity and the rigidity of the framework vary with the loading position and direction. The framework loaded with 901 towards the occlusal surface has the highest bearing capacity and the greatest rigidity. The framework loaded with 301 towards the occlusal surface has the least rigidity indicating that oblique loading has a major impact on the fracture of ceramic frameworks.& 2015 Elsevier Ltd. All rights reserved. IntroductionCeramics are among the most inert biomaterials known. Their advantages include high biocompatibility (Depprich et al., 2008), good esthetic appearance (Ghazal et al., 2008), low solubility and low thermal conductivity (Chai et al., 2007). Among the crucial problems for ceramics, however, are low fracture resistance and brittleness and, consequently, no or little apparent plastic deformation can occur before fracture (Munz and Fett, 1999 j o u r n a l o f t h e m e c h a n i c a l b e h a v i o r o f b i o m e d i c a l m a t e r i a l s 5 0 ( 2 0 1 5 ) 2 0 6 -2 1 4

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Fractures of posterior teeth in adults

Cited by 114 publications

References 7 publications

A Comparative Study To Evaluate The Fracture Resistance of Posterior Teeth Restored With Ceramic Inlay And Hybrid Composite Restoration – An In-Vitro Study.

A Comparative Study To Evaluate The Fracture Resistance of Posterior Teeth Restored With Ceramic Inlay And Hybrid Composite Restoration – An In-Vitro Study.

Fatigue and fracture of bovine dentin

Numerical simulation of the fracture process in ceramic FPD frameworks caused by oblique loading

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