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CC BY-NC-ND 4.0 · Eur J Dent 2017; 11(02): 174-179
DOI: 10.4103/ejd.ejd_228_16
Original Article
Dental Investigation Society

A comparative in vitro study on fluoride release and water sorption of different flowable esthetic restorative materials

Asmaa Youssif Harhash
1   Department of Conservative Dentistry, Faculty of Dentistry, ian Russian University, Cairo, Egypt
,
Iman Ibrahim ElSayad
2   Department of Conservative Dentistry, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt
,
Ahmad G.S. Zaghloul
3   Department of Conservative Dentistry, Faculty of Dentistry, British University in, Cairo, Egypt
› Author Affiliations
Further Information

Publication History

Publication Date:
23 September 2019 (online)

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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 and Methods: 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.

Key words:

Fluoride release - giomer - nano-hybrid composite - water sorption
 

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