Shear bond strength of several new core materials

Shifra Levartovsky, Gary Goldstein, Maria Georgescu

Research output: Contribution to journalArticle

Abstract

This study compared the shear bond strengths of three core materials: a light activated glass-ionomer cement (VariGlass VLC), a fluoride-release dual cure composite resin (FluoroCore), and a conventional silver-reinforced glass-ionomer cement (Miracle Mix) when cured to dentin. Fifty-four noncarious molar teeth were extracted, cleaned, mounted in acrylic resin, and sectioned horizontally to expose the dentin surface. Each material was mixed according to manufacturer's instructions, applied in a premade mold to the exposed dentin, and then cured. The specimens were randomized into three groups (six teeth from each material) and stored (37° C, 100% humidity) for 15 minutes, 24 hours, and 24 hours and were then thermocycled (5° to 55° C) for 125 cycles. The specimens were tested for shear bond strength with the Instron universal testing machine. The differences among time groups were not statistically significant except for Miracle Mix and VariGlass VLC cements, which showed a greater improvement with thermocycling. This study indicated that the FluoroCore resin exhibited the greatest shear bond strength of the core materials and that VariGlass VLC cement had greater bond strength than Miracle Mix cement except after thermocycling, when VariGlass VLC cement and FluoroCore resin were not significantly different.

Original languageEnglish (US)
Pages (from-to)154-158
Number of pages5
JournalJournal of Prosthetic Dentistry
Volume75
Issue number2
StatePublished - 1996

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Shear Strength
Dentin
Glass Ionomer Cements
Tooth
Resin Cements
Acrylic Resins
Composite Resins
Humidity
Fluorides
Silver
Fungi
Light
VariGlass VLC
Miracle Mix
FluoroCore

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Shear bond strength of several new core materials. / Levartovsky, Shifra; Goldstein, Gary; Georgescu, Maria.

In: Journal of Prosthetic Dentistry, Vol. 75, No. 2, 1996, p. 154-158.

Research output: Contribution to journalArticle

Levartovsky, S, Goldstein, G & Georgescu, M 1996, 'Shear bond strength of several new core materials', Journal of Prosthetic Dentistry, vol. 75, no. 2, pp. 154-158.
Levartovsky, Shifra ; Goldstein, Gary ; Georgescu, Maria. / Shear bond strength of several new core materials. In: Journal of Prosthetic Dentistry. 1996 ; Vol. 75, No. 2. pp. 154-158.
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