Fluoride Release and Recharge in Glass Ionomer Restoratives: A Comparative Study

Manav E., Kutuk Z. B., Gurgan S.

Fluoride, cilt.58, sa.19, 2025 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 58 Sayı: 19
  • Basım Tarihi: 2025
  • Dergi Adı: Fluoride
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, EMBASE, Directory of Open Access Journals
  • Anahtar Kelimeler: Dental materials, in vitro techniques, ion-selective electrodes, tooth remineralization, topical fluorides
  • Lokman Hekim Üniversitesi Adresli: Evet

Özet

Purpose: This in vitro study aimed to evaluate the fluoride release and recharge properties of three distinct fluoride-containing glass ionomer restorative materials, both before and after fluoride varnish application. It was hypothesized that there would be significant differences in the initial fluoride release and recharge capacities among the tested materials. Methods: Three glass ionomer restorative materials—Riva Self Cure HV (Southern Dental Industries, Victoria, Australia), EQUIA (GC Corporation, Tokyo, Japan), and EQUIA Forte (GC Corporation, Tokyo, Japan)—were tested using disc-shaped specimens. Fluoride release was measured daily during the first week and cumulatively up to seven weeks using a fluoride ion-selective electrode. Following this period, fluoride varnish (MI Varnish, containing 22,600 ppm sodium fluoride and CPP-ACP; GC Corporation, Tokyo, Japan) was applied, and cumulative fluoride release was reassessed at 1 and 3 weeks. Results: All materials released the most fluoride within the first two days. EQUIA exhibited the highest fluoride release in the early period, while EQUIA Forte demonstrated superior fluoride recharge after varnish application (p-value<0.05). Conclusions: The results confirmed the initial hypothesis. EQUIA may be more beneficial for early caries prevention due to higher initial fluoride release, whereas EQUIA Forte shows better long-term fluoride recharge potential. These findings have important implications for selecting restorative materials in patients requiring enhanced caries prevention.