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- Title
Changes in enamel hardness, wear resistance, surface texture, and surface crystal structure with glass ionomer cement containing BioUnion fillers.
- Authors
Misuzu SAGAWA; Yasuhiro NAMURA; Yasuki UCHIDA; Wakako MIYAMA; Shirabe NISHIMURA; Toshihiro YONEYAMA; Toshiki TAKAMIZAWA; Mitsuru MOTOYOSHI
- Abstract
This study investigated the potential of BioUnion filler containing glass ionomer cement (GIC) to enhance the properties of enamel surrounding restorations, with a specific focus on the effect on hardness. The hardness of the bovine enamel immersed in the cement was measured using Vickers hardness numbers. Following sliding and impact wear simulations, the enamel facets were examined using confocal-laser-scanning microscopy and scanning-electron microscopy. Surface properties were further analyzed using energydispersive X-ray spectroscopy and X-ray diffraction (XRD). A significant increase in Vickers hardness numbers was observed in the BioUnion filler GIC after 2 days. Furthermore, the mean depth of enamel facets treated with BioUnion filler GIC was significantly less than that of untreated facets. Characteristic XRD peaks indicating the presence of hydroxyapatite were also observed. Our findings imply that GIC with BioUnion fillers enhances the mechanical properties of the tooth surface adjacent to the cement.
- Subjects
CRYSTAL glass; SURFACE texture; CRYSTAL surfaces; SURFACE structure; WEAR resistance
- Publication
Dental Materials Journal, 2024, Vol 43, Issue 2, p247
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2023-180