Predictions of cement microfracture under crowns using 3D‐FEA

Kamposiora, Phophi; Papavasiliou, George; Bayne, Stephen C.; Felton, David A.

doi:10.1111/j.1532-849x.2000.00201.x

Cited by 19 publications

(21 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, no significant changes were observed between cement thicknesses of 30 μm and 50 μm. Thus, cement thickness had minimal effect on maximum principal stress, as was shown in previous studies 17,18) . This minimal effect could be due to the approximate elasticity values of cement (8 MPa) and dentin (16 MPa).…”

Section: Discussionsupporting

confidence: 53%

“…This minimal effect could be due to the approximate elasticity values of cement (8 MPa) and dentin (16 MPa). It was reported that cements transfer stresses to dentin with the elastic moduli and thicknesses of cement, core and supporting materials playing a significant role 17,18) . Results of the present study indicated that the core material played a determinant role on stress transfer.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies have further demonstrated that luting agents restricted and resisted against the propagation of cracks from the internal surface of the bonded resin 15,16) . Although there is evidence-based data for the effect of luting agents on all-ceramic crowns 17,18) , the thickness effect of each layer in ceramic-cementdentin structures is not well studied. It is known that the overall fracture resistance of all-ceramic restorations is strongly dependent on the support material 8) .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of Layer Thickness on Stress Distribution in Ceramic-Cement-Dentin Multilayer Systems

2008

View full text Add to dashboard Cite

The effects of dentin and cement thicknesses on stress level and distribution of crack propagation in ceramic-cement-dentin multilayer complex were analyzed. Custom-designed finite element analysis program based on JL Analyzer was used to analyze the stress distribution and present the maximum principal stress locations. In Zirconia, all the maximum stress values were above 100 MPa. In Empress II, they ranged between 50 and 105 MPa, which were approximately one-third of those of Zirconia. In Feldspathic, the maximum stress values were generally lower than 50 MPa. In all groups with 30 μm cement thickness, the highest values were observed at the bottom surface. For cement thicknesses at 50, 70, and 100 μm, maximum stress was found to occur at the top surface. However, changes in dentin thickness did not bring about significant changes in maximum stress values. Results of this study revealed the roles played by the following variables in the failure of a multilayer structure: cement thickness had a minor influence, dentin thickness exerted no influence, but the thickness and type of ceramic system played a significant role.

show abstract

Section: Discussionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Layer Thickness on Stress Distribution in Ceramic-Cement-Dentin Multilayer Systems

2008

View full text Add to dashboard Cite

show abstract

“…The use of a "mold" to enclose a specimen could in theory distribute the point load of a 0.2-mm blunt shear knife around the mold in order to minimize any concentrated shear stresses associated with a shear knife being placed directly onto a specimen. For this µSBS method, a full FEA analysis on the mold-enclosed µSBS method would be required to be performed in order to establish this and comparisons made with other studies 17,20,28,29) . Furthermore, the use of a mold-enclosed specimen format eliminates the requirement to remove the specimen from the mold, potentially reducing the amount of pre-test failures observed when separating µSBS specimens from a mold for non-enclosed specimens.…”

Section: Discussionmentioning

confidence: 99%

A comparison of the micro-shear bond strength and failure mode of non-enclosed and mold-enclosed luting cements bonded to metal

et al. 2013

View full text Add to dashboard Cite

The objective of the study was to compare 1) the mean micro-shear bond strength and 2) failure mode of cements to metals in nonenclosed and mold-enclosed specimens. Specimens were prepared in mold-enclosed and non-enclosed formats from two RMGIC's and a self-adhesive resin-cement. 3-way ANOVA analysis and Tukey post hoc tests were used to compare mean µSBS results (α=0.05). Failure mode was analysed with Pearson's chi-square test (α=0.05). µSBS was significantly affected by the factors substrate and method (p<0.001) but not by material (p=0.077). There was an interaction between substrate, method and material F (2,144)=3.57, p=0.031, and method and material (2,144)=5.86, p=0.004. All mold-enclosed specimens for the three cements bonded to titanium and non-precious metal exhibited higher (p<0.001) mean µSBS than the non-enclosed specimens. Within this study, mold-enclosed specimens exhibited significantly higher (p<0.001) mean µSBS and adhesive failure compared to non-enclosed specimens.

show abstract

“…It was concluded that the cement thickness minimally affected stress levels and distributions and greater stresses were found in cements with the greater Young's modulus [28].…”

Section: Introductionmentioning

confidence: 98%

The effect of luting cement type and thickness on stress distribution in upper premolar implant restored with metal ceramic crowns

El-Anwar

Tamam

Fawzy

et al. 2015

Tanta Dental Journal

View full text Add to dashboard Cite

Objective: to study the effect of using two cement types, with three different thicknesses, on stress levels and distributions within bone around implant premolar using three-dimensional Finite Element Analysis techniques. Materials & methods: A three 3D Finite Element models were built for this purpose. Threaded titanium dental implant was implemented in simplified geometry for jaw bone. While the crown geometry, was acquired by 3D scanner. Two cement materials (Zinc phosphate, Glass Ionomer), with three values of cement layer thicknesses (20, 40, and 60 mm) were investigated. Twenty-four case studies were reported within this research. Each case was analyzed under vertical and oblique loading at Palatal Cusp Tip and Central Fossa. Results: Linear static stress analysis was performed. The results of the model showed the superiority of 60 mm thickness cement layer over the other two thicknesses. Conclusions: Using thicker cement layer increase its lifetime, in addition to reducing the cortical bone Von Mises stress. While, the effect of cement layer thickness and type on spongy bone, is negligible.

show abstract

Predictions of cement microfracture under crowns using 3D‐FEA

Abstract: Although the chamfer margin design could lead to greater stresses near the margins that places the cement at risk for microfracture and possible crown failure, glass-ionomer and composite resin cements have more favorable mechanical properties for resisting microfracture.

Cited by 19 publications

References 22 publications

Influence of Layer Thickness on Stress Distribution in Ceramic-Cement-Dentin Multilayer Systems

Influence of Layer Thickness on Stress Distribution in Ceramic-Cement-Dentin Multilayer Systems

A comparison of the micro-shear bond strength and failure mode of non-enclosed and mold-enclosed luting cements bonded to metal

The effect of luting cement type and thickness on stress distribution in upper premolar implant restored with metal ceramic crowns

Contact Info

Product

Resources

About