Effects of mechanical and thermal aging on microleakage of different fissure sealants

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Koyuturk A. E., Kusgoz A., ÜLKER M., Yesilyurt C.

DENTAL MATERIALS JOURNAL, vol.27, no.6, pp.795-801, 2008 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 6
  • Publication Date: 2008
  • Doi Number: 10.4012/dmj.27.795
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.795-801
  • Karadeniz Technical University Affiliated: Yes


The purpose of this study was to examine the microleakage of three different fissure sealants after they were aged by mechanical loading and thermocycling in vitro. To this end, a bonding agent (Prime & Bond (R) NT) and three different fissure sealants (Clinpro, Helioseal F, Teethmate F1) were used, whereby microleakage was evaluated using a dye penetration method after mechanical loading and/or thermocycling. Sealant-treated teeth were allocated into four groups: mechanical loading (50,000 times), thermocycling (10,000 times), mechanical loading (50,000 times) + thermocycling (10,000 times), and one control group. For each fissure sealant, both experimental and control groups showed statistically significant differences in average microleakage score (p<0.05). Further, for each fissure sealant, the highest average microleakage score was obtained in mechanical loading + thermocycling group. When comparison was done for each aging method, the average microleakage scores showed statistically significant differences among the three fissure sealants (P<0.05). Based on the results Of this study it was also concluded that, it is necessary to develop reliable in vitro test methods for dental materials.