A comparative in vitro study on fluoride release and water sorption of different flowable esthetic restorative materials.
Eur J Dent
; 11(2): 174-179, 2017.
Article
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| MEDLINE
| ID: mdl-28729788
ABSTRACT
OBJECTIVES:
The objective of the study was to evaluate fluoride release and water sorption of three flowable esthetic restorative materials a giomer, a fluoride-releasing resin composite, and a nonfluoridated resin composite. MATERIALS ANDMETHODS:
Ten samples from a giomer, a fluoride releasing nano-hybrid, and a nonfluoridated nano-hybrid composite were prepared and immersed in deionized water. Fluoride measurements were done using an ion-specific electrode attached to a microprocessor-based fluoride meter after 1 day, 1 week, and 4 weeks. Another thirty samples were made and placed in desiccators. Water sorption was calculated by weighing the specimens before and after water immersion for 1 day, 1 week, and 4 weeks. Data analysis was done using two-way ANOVA, paired t-test (P < 0.05), and Pearson's correlation coefficient to calculate correlations between fluoride release and water sorption.RESULTS:
The highest fluoride release was from giomer after 1 day, it was statistically significant from all other groups. Both nano-hybrid composites after 1 day showed significantly lower water sorption which was different than all the other groups. Pearson's correlation showed no significant correlations between fluoride release and water sorption.CONCLUSIONS:
Fluoride release is material and time dependent, while water sorption is material dependent.
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2017
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Article