Effect of varying core thicknesses and artificial aging on the color difference of different all-ceramic materials

Abstract

Different core thicknesses (from 1.0-0.5 mm) and artificial aging affected color stability of the all-ceramic materials tested.

Influence of Accelerated Aging on the Color Stability of Dental Zirconia

“…The study from Dikicier and colleagues also evaluated the optical properties of a white zirconia. The color differences found were statistically significant, however they were not clinically perceptible (ΔE*ab = 1.19) . These authors used an aging protocol with ultraviolet light and water spray in the weathering machine for 200 hours, at 50°C; which is less aggressive in comparison with aging in the autoclave.…”

“…It was concluded that the effect of LTD was similar for both staining processes; however the effect of LTD on the color stability of the zirconia was not addressed. In 2014, another study examined the effects of different core thicknesses and artificial aging on the color stability of zirconia . The aging procedure consisted of exposing the ceramic specimens to ultraviolet light and water spray in the weathering machine for 200 hours.…”

Influence of core thickness and artificial aging on the biaxial flexural strength of different all-ceramic materials: An <i>in-vitro</i> study

“…Based on the previous color study; Dikicier et al 42) reported that all-ceramics color change was less influenced by increasing core thickness. The present study indicated that strength values increased with increasing core thickness.…”

Translucency of Zirconia Ceramics before and after Artificial Aging

“…All‐ceramic systems (glass‐ceramics, lithium‐disilicate‐based, fluorapatite‐based, and leucite‐based) become more opaque with aging . Further studies showed that the aging process influences the color of all‐ceramic systems . In some composites the translucency is described as stable regardless of aging .…”