Effect of Hydroxyapatite Nanoparticles Addition to Resin Modified Glass Ionomer Cement on Degree of Convergence and Fluoride Release
Keywords:
Remineralization, Resin modified glass ionomer, Hydroxyapatite nanoparticles, Fluoride release Spectrophotometer, Degree of convergence, FTIRAbstract
Objectives: This study evaluated the effect of addition of hydroxyapatite nanoparticles to resin modified glass ionomer cement on degree of convergence and fluoride release. Materials and Methods: A total number of 42 specimens were prepared from Chemically cured Resin Modified Glass Ionomer (Group I) and Experimental mixture (Group II) consisting of 25% needle shaped Hydroxyapatite nanoparticles (HANPs) incorporated with Chemically cured Resin Modified Glass Ionomer, (n=21). The two tested groups were morphologically tested by SEM and chemically analyzed by EDAX after 24hrs from mixing. The degree of convergence was calculated by using transmission fourier transform infra-red spectrometer (FTIR) after 24hrs & 72hrs and fluoride release was detected at different time intervals. Results: The results revealed a significant decrease in the degree of convergence after 24hrs and 72hrs in Group II(A): (34.8 ±10.7 and 44.2 ± 6.8, respectively). There was a significant increase in the fluoride release for Group II(B) compared to Group I(B) among all-time intervals. Conclusion: addition of 25% of hydroxyapatite nanoparticles to RMGIC decreased degree of convergence and increased fluoride release property.