Effect of Infiltration with Ferric Oxide Containing Glass on the Color and Mechanical Properties of Zirconia

Abstract:

This study was to examine the effects of ferric oxide contents, which is one of the components of a newly developed glass, on the color and mechanical strengths of zirconia surfaces after glass infiltration. The composition of bioactive glass contained: SiO₂–Al₂O₃–Na₂O–MgO–BaO–CaO–Nb₂O₅–TiO₂–Fe₂O₃. 84 presintered zirconia discs (diameter 15 mm, height 1.2 mm) were prepared. The experimental groups were divided into 6 groups by Fe₂O₃ contents of 0, 1, 1.5, 2.0, 2.5 and 2.9 wt%. Non-glass infiltrated zirconia was used as a control. Bioactive glass was coated on the presintered zirconia disc by a spin coating and infiltrated into zirconia by complete sintering at 1450°C for 2 hr. The color of the specimens was measured using a digital spectrophotometer and biaxial flexural strength and fracture toughness was compared. The colors of glass infiltrated zirconia were from yellow to yellowish orange according to ferric oxides contents and those were within the range of natural teeth colors. The mechanical properties of glass infiltrated zirconia were not inferior to those of zirconia. Glass infiltration with ferric oxide into zirconia can improve the color and mechanical properties of zirconia and be applicable for dental purpose.

• Periodical: Key Engineering Materials (Volume 696)
• Pages: 113-117
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.696.113
• Online since: May 2016
• Authors: Sang Won Park*, Gye Jeong Oh, Kyung Jun Jang, Min Kyung Ji, Ji Hyun Kim, Jin Won Kim, Jae Sam Ban, Hyun Pil Lim, Kwi Dug Yun, Min Ji Kim, Chan Park
• Keywords: Bioactive Glass, Color, Ferric Oxide, Infiltration, Mechanical Properties, Zirconia

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