Characteristics and porcelain bond strength of (Ti,Al)N coating on dental alloys

Kwok Hung Chung, Jeng Gong Duh, Daehwan Shin, David R. Cagna, Robert J. Cronin

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The effect of a novel titanium-aluminum nitride film, or (Ti,Al)N film, on the bond strength between a dental porcelain and two nickel-based dental alloy substrates was investigated. A thin layer of (Ti,Al)N film was deposited on flat metal samples using a reactive radio-frequency sputtering method. A uniform thickness of porcelain was applied to the film-coated metal samples. Metal-ceramic specimens were subjected to three-point bending, and failure loads were recorded. Bond strengths between the porcelain and (Ti, Al)N-coated metal alloys ranged from 159.0 ± 11.7 N to 278.0 ± 12.3 N. These values were significantly greater (p> 0.05) than bond strengths recorded for control samples that did not incorporate the (Ti,Al)N film. An electron probe microanalyzer with a line profile mode was used to characterize the interface between the (Ti,Al)N film and the porcelain. Results of this investigation suggest that the (Ti,Al)N film (1) increases the flexural bond strength between dental porcelain and nickel-based alloy substrates by permitting elemental diffusion, (2) interferes with the surface oxide formation that characteristically originates from the nickel-based metal alloy substrate, and (3) provides an appropriate oxide layer for porcelain application.

Original languageEnglish (US)
Pages (from-to)516-521
Number of pages6
JournalJournal of Biomedical Materials Research
Volume63
Issue number5
DOIs
StatePublished - Oct 7 2002

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Dental alloys
Dental Alloys
Dental Porcelain
Porcelain
Bond strength (materials)
Coatings
Nickel
Metals
Oxides
Substrates
Aluminum nitride
Cermets
Titanium
Sputtering
Electrons

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Biomedical Engineering

Cite this

Characteristics and porcelain bond strength of (Ti,Al)N coating on dental alloys. / Chung, Kwok Hung; Duh, Jeng Gong; Shin, Daehwan; Cagna, David R.; Cronin, Robert J.

In: Journal of Biomedical Materials Research, Vol. 63, No. 5, 07.10.2002, p. 516-521.

Research output: Contribution to journalArticle

Chung, Kwok Hung ; Duh, Jeng Gong ; Shin, Daehwan ; Cagna, David R. ; Cronin, Robert J. / Characteristics and porcelain bond strength of (Ti,Al)N coating on dental alloys. In: Journal of Biomedical Materials Research. 2002 ; Vol. 63, No. 5. pp. 516-521.
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