COLOR CHANGE, SURFACE ROUGHNESS, AND MICROHARDNESS OF FLUORIDE RELEASING RESTORATIVES AFTER EXPOSURE TO VARIOUS TEA SOLUTIONS AND BLEACHING TREATMENT

Vural U. K., YILMAZ A. E., MERAL E., Gurgan S.

Fluoride, cilt.55, sa.3, ss.256-270, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55 Sayı: 3
  • Basım Tarihi: 2022
  • Dergi Adı: Fluoride
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aqualine, BIOSIS, CAB Abstracts, EMBASE, Veterinary Science Database, Directory of Open Access Journals
  • Sayfa Sayıları: ss.256-270
  • Anahtar Kelimeler: Bleaching, Fluoride releasing materials, Microhardness, Staining, Surface roughness
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Material preferences of dental practitioners for the restoration of cavities shifted in favor of fluoride (F) releasing materials as F is a powerful therapeutic and preventive agent against dental caries. Thus, this in vitro study aimed to examine whether various tea solutions and bleaching have an effect on the color, surface roughness, and microhardness of F releasing restoratives. Cylindrical 48 specimens of 3 high viscosity restorative glass ionomers (GIs); Riva self-cure HV, Fuji Bulk, and Equia Forte Fil (named also as glass hybrid) and a giomer (Beautifil II) were fabricated. Each group was split across 4 groups (n=12). The specimens were immersed in tea solutions (mixed fruit, black, green, and white) and then bleached with 40% hydrogen peroxide. Color, surface roughness, and microhardness measurements were done after immersing in distilled water for 24 hours (T0), tea solutions (T1) and bleaching (T2). Data were analyzed statistically (p<0.05). The highest color change was observed with mixed fruit tea; whereas the lowest was observed with white tea at T1 (p<0.001). At T2, the highest color change was recorded with Equia Forte Fil, Fuji Bulk, and Riva Self Cure HV immersed in mixed fruit tea and Fuji Bulk and Equia Forte Fil in black tea and the lowest color change was seen with Beautifil II and Riva Self Cure HV immersed in white tea. For surface roughness and microhardness, significant differences were found among groups at T0, T1, and T2 (p<0.001). Surface roughness increased whereas microhardness decreased at T1 and T2 in all groups. All tested materials were susceptible to tea staining and bleaching. Giomer showed better color stability, lower roughness, and higher microhardness values than the tested GIs.