Effects of experimental pastes containing surface pre-reacted glass ionomer fillers on inhibition of enamel demineralization

• Published in: Dental Materials Journal Vol. 36; no. 4; pp. 482 - 490
• Main Authors: HAMBA, Hidenori, SADR, Alireza, TAGAMI, Junji, NAKASHIMA, Syozi, NAKAMURA, Keiki, OIKAWA, Masakazu, UO, Motohiro, NIKAIDO, Toru
• Format: Journal Article
• Language: English
• Published: Japan The Japanese Society for Dental Materials and Devices 2017; Japanese Society for Dental Materials and Devices; Japan Science and Technology Agency
• Subjects: Acetic acid; Animals; Cattle; Deionization; Demineralization; Demineralizing; Dental Enamel; Emission; Enamel; Fillers; Micro-CT; Micro-PIXE; Ointments; Pastes; S-PRG filler; Scanning electron microscopy; Sodium Fluoride; Toothpastes; Micro-CT; Demineralization; Micro-PIXE; S-PRG filler; Enamel
• ISSN: 0287-4547; 1881-1361; 1881-1361
• DOI: 10.4012/dmj.2016-303

This study aimed to evaluate the inhibitory effect of experimental pastes containing surface pre-reacted glass ionomer (S-PRG) fillers on enamel demineralization. Bovine blocks were treated twice a day for 4 days by 7 groups; experimental pastes containing 0–30 wt% S-PRG filler (S00, S01, S05, S10, and S30), deionized water (DW) as negative control, and NaF paste (MP) as positive control. The surfaces were demineralized by acetic acid for 3 days. Mineral loss (ML) was calculated by micro-computed X-ray tomography. The treated surface was finally investigated with scanning electron microscope (SEM) and micro-focused particle induced X-ray emission (micro-PIXE). S05, S10 and S30 demonstrated significantly lower ML than S00, S01 and DW (p<0.05). S10 showed the greatest inhibitory effect, which was significantly greater than MP. The S-PRG filler containing experimental pastes demonstrated a potential to inhibit enamel demineralization. Sr ion incorporation was confirmed on the enamel surface with the experimental pastes.