Prevention of acidic attack on tooth enamel surfaces using polishing paste containing ion-releasing filler

• Published in: Dental Materials Journal Vol. 40; no. 6; pp. 1352 - 1358
• Main Authors: IIJIMA, Tatsuya, KUROKAWA, Hiroyasu, TAKAMIZAWA, Toshiki, HIROKANE, Eizo, TAKAHASHI, Nao, WAKAMATSU, Kengo, SUDA, Shunichi, MIYAZAKI, Masashi
• Format: Journal Article
• Language: English
• Published: Tokyo The Japanese Society for Dental Materials and Devices 25.11.2021; Japanese Society for Dental Materials and Devices; Japan Science and Technology Agency
• Subjects: Buffer solutions; Composite materials; Dental caries; Dental enamel; Diamond polishing; Diamonds; Enamel erosion; Fillers; Ion-releasing filler; Ionomers; Lactic acid; OCT; Optical communication; Polishing paste; Silicon carbide; Teeth
• ISSN: 0287-4547; 1881-1361
• DOI: 10.4012/dmj.2021-011

The purpose of this study was to investigate the ability of polishing paste containing surface pre-reacted glass-ionomer (S-PRG) filler to prevent acidic attack on tooth enamel surfaces. Resin composites were filled in the standardized cavities and finished with silicon carbide paper. These specimens were divided into three groups: the unpolished “control” group, the “PRG” group polished with S-PRG paste, and the “DDP” group polished with diamond-containing polishing paste. Following polishing, the specimens were immersed in a lactic acid buffer solution for 28 days. Optical coherence tomography (OCT) signals were measured to obtain the signal intensity and width at 1/e2 at selected locations on the enamel surface adjacent to the restoration. Although signal intensity significantly increased in all groups, widths at 1/e2 did not change significantly in the PRG group. For both the control and DDP groups, signal intensity and width at 1/e2 increased and decreased over time, respectively.