Abstract
Background: Sealing occlusal pits and fissures is an effective preventive measure against dental caries. Pit and fissure sealants (PFS) should be strongly bonded to the teeth to prevent partial or complete loss of the sealant, which may limit its preventive effect. Objective: The objective of the study was to compare the microtensile bond strength (μTBS) of bioactive resin-based sealants (Bio-RBS) and resin-based sealants (RBS), with and without the use of a bonding agent, to the enamel of primary and permanent teeth. Methods: One hundred and twenty caries-free primary molar specimens and 120 permanent molar specimens were divided to eight groups (30 specimens per group), both primary and permanent teeth were sealed with a Bio-RBS BioCoatTM (Premier®, Plymouth Meeting, PA, USA) or with a RBS ClinproTM (3M ESPE, Saint Paul, MN, USA), with or without the use of a bonding agent (Prime & Bond NT; Dentsply, Inc., Charlotte, NC, USA). Half the specimens were aged with 5000 thermal cycles, and all specimens were tested for the μTBS and failure mode. Results: The mean μTBS of aged Bio-RBS was higher in permanent teeth than primary teeth, and the aging process reduced the μTBS of RBS more than that of Bio-RBS. Moreover, the addition of a bonding agent improved the μTBS of aged RBS in permanent teeth. Conclusion: We concluded that Bio-RBS exhibit superior μTBS than RBS when applied to permanent teeth.
Highlights
Dental caries is a multifactorial disease that occurs due to an altered balance between the demineralization and remineralization processes [1]
The use of Pit and fissure sealants (PFS) for the prevention of occlusal caries is advocated by many dental associations, including the American Dental Association (ADA) and The American Academy of Pediatric Dentistry (AAPD), in their evidence-based practice guidelines [10,31]
The findings of the current study show that the μTBS of bioactive resin-based sealants (Bio-resin-based sealants (RBS)) in the aged specimens was better than RBS
Summary
Dental caries is a multifactorial disease that occurs due to an altered balance between the demineralization and remineralization processes [1]. Cleaning occlusal pits and fissures is problematic due to their plaque retentive nature. This makes them more prone to caries when compared to smooth tooth surfaces. The morphology of the occlusal pits and fissures is not identical in all teeth [7]. Sealing occlusal pits and fissures is an effective preventive measure against dental caries. Objective: The objective of the study was to compare the microtensile bond strength (μTBS) of bioactive resin-based sealants (Bio-RBS) and resin-based sealants (RBS), with and without the use of a bonding agent, to the enamel of primary and permanent teeth. Conclusion: We concluded that Bio-RBS exhibit superior μTBS than RBS when applied to permanent teeth
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