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

2017 ◽  
Vol 11 (02) ◽  
pp. 174-179 ◽  
Author(s):  
Asmaa Youssif Harhash ◽  
Iman Ibrahim ElSayad ◽  
Ahmad G.S. Zaghloul
Keyword(s):  
Water Sorption ◽  
Hybrid Composites ◽  
Resin Composite ◽  
Water Immersion ◽  
In Vitro Study ◽  
Fluoride Release ◽  
Pearson’S Correlation ◽  
Restorative Materials ◽  
Pearson's Correlation

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.

scholarly journals Marginal Leakage of Endodontic Temporary Restorative Materials around Access Cavities Prepared with Pre-Endodontic Composite Build-Up: An In Vitro Study

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1700
Author(s):  
Atsushi Kameyama ◽  
Aoi Saito ◽  
Akiko Haruyama ◽  
Tomoaki Komada ◽  
Setsuko Sugiyama ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Zinc Oxide Eugenol ◽  
Restorative Materials ◽  
Ionomer Cement

This study aimed to examine the marginal seal between various commercial temporary restorative materials and exposed dentin/built-up composite. Sixty bovine incisors were cut above the cemento-enamel junction, and half of the dentin was removed to form a step, which was built up using flowable resin composite. The root canals were irrigated, filled with calcium hydroxide, and sealed using one of six temporary sealing materials (hydraulic temporary restorative material, temporary stopping material, zinc oxide eugenol cement, glass-ionomer cement, auto-cured resin-based temporary restorative material, and light-cured resin-based temporary restorative material) (n = 10 for each material). The samples were thermocycled 500 times and immersed in an aqueous solution of methylene blue. After 2 days, they were cut along the long axis of the tooth and the depth of dye penetration was measured at the dentin side and the built-up composite side. For the margins of the pre-endodontic resin composite build-up, the two resin-based temporary restorative materials showed excellent sealing. Hydraulic temporary restorative material had a moderate sealing effect, but the sealing effect of both zinc oxide eugenol cement and glass-ionomer cement was poorer.

scholarly journals Comparative evaluation of fluoride release and recharge potential of novel and traditional fluoride-releasing restorative materials: An in vitro study

2018 ◽  
Vol 21 (6) ◽  
pp. 622 ◽  
Author(s):  
MVidya Saraswathi ◽  
Sayan Dasgupta ◽  
Krishnaraj Somayaji ◽  
KalyanaChakravarthy Pentapati ◽  
Prajwal Shetty
Keyword(s):  
Comparative Evaluation ◽  
In Vitro Study ◽  
Vitro Study ◽  
Fluoride Release ◽  
Recharge Potential ◽  
Restorative Materials

scholarly journals Effect of Energy Drinks on Color Stability of Different Restorative Materials

2021 ◽  
Vol 7 (5) ◽  
Author(s):  
AlSarheed M ◽  
Salama F
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Color Stability ◽  
Energy Drinks ◽  
Glass Ionomer ◽  
Hybrid Resin ◽  
Restorative Materials ◽  
Ionomer Cement

Background: The purpose of this in vitro study was to evaluate the effect of finishing/polishing procedures on color stability of three restorative materials: Nano-hybrid resin composite (NRC), silver glass ionomer cement (SGI), and resin-modified glass ionomer cement (RMGI) exposed to different staining of energy drinks: Barbican, Bison, and Red bull.

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