Fracture Mechanics Analysis of the Dentine-Luting Cement Interface.

A.K. Ryan, Christina Mitchell, John Orr

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


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 languageEnglish
Pages (from-to)271-276
Number of pages6
JournalProceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Volume216 (4)
Issue number4
Publication statusPublished - Jan 2002

ASJC Scopus subject areas

  • Biomedical Engineering
  • Mechanical Engineering


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