The effect of curing mode on extent of polymerization and microhardness of dual-cured, self-adhesive resin cements

Milena Cadenaro, Chiara Ottavia Navarra, Francesca Antoniolli, Annalisa Mazzoni, Roberto Di Lenarda, Frederick Allen Rueggeberg, Lorenzo Breschi

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Purpose: To compare the effect of curing mode (self- or light-cure) on the extent of polymerization (%EP1 as measured using differential scanning calorimetry, (DSC) and microhardness of two dual-cured, self-adhesive resin cements, using a conventional, dual-cured resin cement as control. Methods: Small amounts of the commercial self-adhesive cements Maxcem and RelyX Unicem or Panavia F2.0 dual-cure resin based cement used as control were polymerized within the DSC chamber at 35°C under a nitrogen atmosphere. 10 specimens were light-cured immediately (20 seconds, 600 mW/cm2) and left undisturbed for 2 hours and 10 additional specimens were left to self-cure in the dark for 2 hours. Following DSC treatment, microhardness of the specimens was measured (Vickers). For each test parameter, data were analyzed with a two-way ANOVA and the Tukey post hoc test. Results: %EP and microhardness of all cements were higher when the light-cure mode of dual-activation was used (P< 0.05) instead of only self-curing. No significant difference in %EP was found between either self-adhesive cement or the control using either the light- or self-curing modes. In the light-activated mode, the conventional, dual-cure control cement demonstrated lower microhardness than the self-adhesive cements (P< 0.05).

Original languageEnglish (US)
Pages (from-to)14-18
Number of pages5
JournalAmerican journal of dentistry
Volume23
Issue number1
StatePublished - Feb 1 2010
Externally publishedYes

ASJC Scopus subject areas

  • Dentistry(all)

Fingerprint Dive into the research topics of 'The effect of curing mode on extent of polymerization and microhardness of dual-cured, self-adhesive resin cements'. Together they form a unique fingerprint.

  • Cite this

    Cadenaro, M., Navarra, C. O., Antoniolli, F., Mazzoni, A., Di Lenarda, R., Rueggeberg, F. A., & Breschi, L. (2010). The effect of curing mode on extent of polymerization and microhardness of dual-cured, self-adhesive resin cements. American journal of dentistry, 23(1), 14-18.