THE EFFECT OF DIFFERENT FLUORIDE-RELEASING RESTORATIVE MATERIALS ON THE NANOHARDNESS OF ADJACENT ENAMEL AT DIFFERENT DISTANCES
[ N/A ]
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Int Soc Fluoride Research
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Fluoride-releasing restorative materials (FRRMs) are crucial for preventing secondary caries formation in teeth. One way of detecting the anticariogenic activity of these materials is to evaluate the hardness of the adjacent enamel. Objective: The study was aimed at comparing changes to the enamel surface adjacent to the FRRMs, following the cariogenic challenge, and at evaluating the anti-caries effectiveness demonstrated by the materials at different distances. Material and methods: Thirty-five enamel samples were obtained from bovine incisors. The samples were embedded in acrylic resin and then standard cylindrical cavities were prepared in the center of the samples and restored with five different materials: high-viscosity glass ionomer cement (Group GIC; Fuji IX extra), resin-modified glass ionomer cement (Group RMGIC; Fuji II LC), glass hybrid reinforced high-viscosity glass ionomer cement (Group EQ; Equia Forte), giomer (Group BII; Beautifil II LS), and bioactive restorative material (Group ACT; ACTIVA BioACTIVE Restorative). Nanoindentation testing was performed twice (baseline and after the artificial caries challenge) at five different points. Differences in nanohardness values were recorded and the data were statistically analyzed. Results: The RMGIC and EQ groups showed significantly higher nanohardness values compared to the others at a distance of 100 and 200 mu m (p<0.05). However, at 300 mu m, the RMGIC and GIC groups showed significantly higher nanohardness values than the others (p <0.05). At 400 and 500 mu m, there were no statistically significant differences among the groups (p>0.05). Conclusion: Within the limitations of the study, it was found that high viscosity and resin-modified glass ionomer cement were more effective in increasing enamel hardness, up to a distance of 300 mu m in the adjacent enamel than giomer and bioactive reactive materials,
Açıklama
Anahtar Kelimeler
Dental enamel, Fluoride, Nanohardness, Restorative materials, Secondary caries
Kaynak
Fluoride
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
54
Sayı
2
