A comparative study of the bond strengths of amalgam and alloy-glass ionomer cores.

C. J. Arcoria, J. P. DeWald, C. R. Moody, Jack Ferracane

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The purpose of this study was to compare the bond strengths of dental amalgam cores and dental alloy-glass ionomer cores that were luted to cast gold crowns with glass ionomer cement. Seventy-two human extracted molars were sectioned horizontally and four regular thread mate system pins were inserted into a flat pulpal floor. The teeth were restored with amalgam or alloy-glass ionomer admixture and prepared for crown preparations. Castings were produced with type III gold and cemented to the cores with Fuji type I glass ionomer cement. Thirty-six of the specimens were subjected to thermal fatigue by cycling between 4 and 50 degrees C for periods of 1, 5 and 10 weeks. The remainder of the specimens were retained in deionized water at 37 degrees C. Bond strengths of the cores, in tension, were measured with a universal testing machine. The alloy-glass ionomer cores exhibited higher bond strengths than the amalgam cores for virtually all time periods, particularly the thermocycled samples. The alloy-glass ionomer cores exclusively displayed core fractures and pin/tooth insufficiencies while the amalgam cores failed because of a deterioration of the glass ionomer luting cement.

Original languageEnglish (US)
Pages (from-to)301-307
Number of pages7
JournalJournal of Oral Rehabilitation
Volume16
Issue number3
StatePublished - May 1989
Externally publishedYes

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Glass Ionomer Cements
Crowns
Gold
Tooth Fractures
Dental Alloys
Dental Amalgam
Fatigue
Tooth
Hot Temperature
glass ionomer
Water

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

A comparative study of the bond strengths of amalgam and alloy-glass ionomer cores. / Arcoria, C. J.; DeWald, J. P.; Moody, C. R.; Ferracane, Jack.

In: Journal of Oral Rehabilitation, Vol. 16, No. 3, 05.1989, p. 301-307.

Research output: Contribution to journalArticle

Arcoria, C. J. ; DeWald, J. P. ; Moody, C. R. ; Ferracane, Jack. / A comparative study of the bond strengths of amalgam and alloy-glass ionomer cores. In: Journal of Oral Rehabilitation. 1989 ; Vol. 16, No. 3. pp. 301-307.
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