Publication: Effect of surface prereacted glass ionomer nanofillers on fluoride release, flexural strength, and surface characteristics of polymethylmethacrylate resin
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Issued Date
2022
Resource Type
Language
eng
File Type
application/pdf
ISSN
14964155
Rights Holder(s)
Scopus
Bibliographic Citation
Integrated Ferroelectrics. Vol 225, No.1 (2022), p.186-198
Suggested Citation
Jitaluk P., Ratanakupt K., Kiatsirirote K. Effect of surface prereacted glass ionomer nanofillers on fluoride release, flexural strength, and surface characteristics of polymethylmethacrylate resin. Integrated Ferroelectrics. Vol 225, No.1 (2022), p.186-198. doi:10.1111/jerd.12964 Retrieved from: https://hdl.handle.net/20.500.14740/9187
Author(s)
Abstract
Objective: Dentures should have proper fluoride release and physical properties. We evaluated how surface prereacted glass ionomer (S-PRG) nanofillers influenced fluoride release, flexural strength, and surface characteristics of polymethylmethacrylate (PMMA) resin. Materials and Methods: PMMA resin disc (n = 14) and rectangular (n = 5) specimens containing 0, 20 wt% microparticles, and 20 wt% nanoparticles of S-PRG were prepared. Six-disc specimens were examined for surface roughness; eight-disc specimens were immersed in 5 ml of deionized water for 24 h before analyzing the fluoride levels on days 1–3, 12, and 15. They were recharged with 1000 ppm fluoride solution for 24 h and stored in deionized water for five cycles. Fluoride release was examined. The flexural strength of the rectangular specimens was determined using a three-point bending test. Data were analyzed by two-way repeated-measures ANOVA. Results: S-PRG nanofiller had the highest fluoride exchange rate and did not significantly change the surface roughness compared with the microparticle and control groups; however, the nanofillers agglomerated and reduced the flexural strength to below 65 MPa. Conclusions: Incorporating 20 wt% nanofillers into resin enhanced the fluoride exchange property greater than microfillers at the same content, but diminished the mechanical properties of the resin. Clinical Significance: Incorporating 20 wt% S-PRG nanofillers in resin denture base can improve the fluoride releasing property without affecting the surface roughness. © 2022 Wiley Periodicals LLC.