Fracture Mechanics Analysis of the Dentine-Luting Cement Interface.

A.K. Ryan; Christina Mitchell; John Orr

doi:10.1243/09544110260138763

Fracture Mechanics Analysis of the Dentine-Luting Cement Interface.

A.K. Ryan, Christina Mitchell, John Orr

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The objectives of this study were to determine the fracture toughness of adhesive interfaces between dentine and clinically relevant, thin layers of dental luting cements. Cements tested included a conventional glass-ionomer, F (Fuji I), a resin-modified glass-ionomer, FP (Fuji Plus) and a compomer cement, D (DyractCem). Ten miniature short-bar chevron notch specimens were manufactured for each cement, each comprising a 40 µm thick chevron of lute, between two 1.5 mm thick blocks of bovine dentine, encased in resin composite. The interfacial KIC results (MN/m3/2) were median (range): F; 0.152 (0.14-0.16), FP; 0.306 (0.27-0.37), D; 0.351 (0.31-0.37). Non-parametric statistical analysis showed that the fracture toughness of F was significantly lower (p

Original language	English
Pages (from-to)	271-276
Number of pages	6
Journal	Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Volume	216 (4)
Issue number	4
DOIs	https://doi.org/10.1243/09544110260138763
Publication status	Published - Jan 2002

ASJC Scopus subject areas

Biomedical Engineering
Mechanical Engineering

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abstract = "The objectives of this study were to determine the fracture toughness of adhesive interfaces between dentine and clinically relevant, thin layers of dental luting cements. Cements tested included a conventional glass-ionomer, F (Fuji I), a resin-modified glass-ionomer, FP (Fuji Plus) and a compomer cement, D (DyractCem). Ten miniature short-bar chevron notch specimens were manufactured for each cement, each comprising a 40 µm thick chevron of lute, between two 1.5 mm thick blocks of bovine dentine, encased in resin composite. The interfacial KIC results (MN/m3/2) were median (range): F; 0.152 (0.14-0.16), FP; 0.306 (0.27-0.37), D; 0.351 (0.31-0.37). Non-parametric statistical analysis showed that the fracture toughness of F was significantly lower (p",

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Fracture Mechanics Analysis of the Dentine-Luting Cement Interface.

Abstract

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