Comparative study of luting agents with composite resin cores

C. R. Moody, J. P. DeWald, J. L. Ferracane

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

This study compared bond strengths of zinc phosphate and polycar{ballot box}ylate cements in cementing cast gold crowns to composite resin cores. The study also compared the effect of thermocycling on the bond strengths in tension of the two cements under varied storage and thermocycling conditions. Sixty standard cores were made from composite resin material. Gold alloy crowns were cast for each core and cemented with zinc phosphate or polycar{ballot box}ylate cement. The samples were stored for 1 day or 1 month and then cycled with 60-second dwell times between 5 °C and 55 °C distilled water baths for 5, 100, or 1000 cycles. The controls were stored for the same periods and were not cycled. Overall comparison of both storage periods and all cycled and noncycled groups revealed that zinc phosphate cement had significantly higher bond strengths than polycar{ballot box}ylate cement. Increasing the storage time before cycling significantly increased the bond strengths for both cements. There was no difference between any of the cycle periods or the noncycled controls for either cement.

Original languageEnglish (US)
Pages (from-to)527-529
Number of pages3
JournalThe Journal of Prosthetic Dentistry
Volume62
Issue number5
DOIs
StatePublished - Nov 1989

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ASJC Scopus subject areas

  • Oral Surgery

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