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Can extended photoactivation time of resin-based fissure sealer materials improve ultimate tensile strength and
Boniek Castillo Dutra Borges1, Eduardo José Souza-Júnior, Anderson Catelan
1Department of Dentistry, Potiguar University (Laureate International Universities), Natal, BRAZIL.
European Journal of Dentistry
|October 19, 2012
Summary
Extended photoactivation time did not improve the physical properties of resin-based fissure sealants. Fluroshield demonstrated comparable or superior ultimate tensile strength (UTS), water sorption (WS), and solubility (WSB) compared to Permaflo.
Area of Science:
- Dental Materials Science
- Polymer Chemistry
Background:
- Fissure sealants are crucial for preventing dental caries.
- Optimizing polymerization of resin-based materials is essential for their durability and performance.
Purpose of the Study:
- To investigate the effect of extended photoactivation time on the physical properties of resin-based fissure sealants.
- To compare the ultimate tensile strength (UTS), water sorption (WS), and solubility (WSB) of a fissure sealant and a flowable composite under different photoactivation durations.
Main Methods:
- Two materials, Fluroshield and Permaflo, were photoactivated for 20 and 60 seconds.
- UTS was measured using a universal testing machine.
- Water sorption (WS) and solubility (WSB) were determined gravimetrically after immersion in distilled water.
Main Results:
- No significant differences in UTS or WS were observed between materials or photoactivation times.
- Permaflo exhibited lower, negative WSB compared to Fluroshield.
Conclusions:
- Extended photoactivation time does not enhance the tested physical properties of these resin-based materials.
- Fluroshield showed similar or better physical properties than Permaflo.
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