Surface property changes observed in zirconia during etching with high-concentration hydrofluoric acid over various immersion times.

Autor: You GE; Department of Conservative Dentistry, Jeonbuk National University School of Dentistry., Lim MJ; Department of Conservative Dentistry, Jeonbuk National University School of Dentistry., Min KS; Department of Conservative Dentistry, Jeonbuk National University School of Dentistry.; Research Institute of Clinical Medicine Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital., Yu MK; Department of Conservative Dentistry, Jeonbuk National University School of Dentistry.; Research Institute of Clinical Medicine Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital., Lee KW; Department of Conservative Dentistry, Jeonbuk National University School of Dentistry.; Research Institute of Clinical Medicine Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital.
Jazyk: angličtina
Zdroj: Dental materials journal [Dent Mater J] 2024 Jan 30; Vol. 43 (1), pp. 52-57. Date of Electronic Publication: 2023 Dec 02.
DOI: 10.4012/dmj.2023-091
Abstrakt: This study investigated the degree of phase transformation, surface roughness, and bond strength of zirconia immersed for various times in a 40% hydrofluoric acid (HF) solution. Non-etched sintered zirconia specimens were used as the control, while experimental groups were etched with a 40% HF solution for 5, 10, 20, 40, 80, 160 and 320 min. In each of the control and experimental groups, five specimens for X-ray diffraction analysis, four for surface morphology and surface roughness analysis, and ten for bonding strength measurement were used. As a result, the surface roughness of zirconia increased as the application time increased during the 40% HF etching, but the bond strength between zirconia and resin cement did not increase proportionally. The phase transformation from tetragonal to monoclinic also gradually increased with application time.
Databáze: MEDLINE