The Affiliated Stomatological Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, China.
Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang 330006, China.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2024 Feb 1;42(1):62-66. doi: 10.7518/hxkq.2024.2023249.
This work aimed to evaluate the effect of speed sintering and low-temperature degradation on the translucency of high-translucent zirconia.
The ST and TT specimens were randomly divided into two groups depending on the sintering process: conventional sintering and speed sintering. The sintered specimens were divided into three subgroups according to the aging time: aged for 0, 5, and 20 h. Chromatic parameters (L*, a*, and b* values) were measured by Shade Eye NCC computer colorimeter in a dark environment under black and white background, and the translucency parameter (TP) was used to evaluate the translucency of zirconia.
Speed sintering may decrease the TP of ST and increase the TP of TT. As for the effect of low-temperature degradation on the translucency of zirconia, the TP of ST decreased with the extension of aging time, and no significant difference was found in rapid sintering ST. Although the TP of TT decreased, no statistical difference was observed.
Speed sintering may decrease the translucency of high-strength zirconia and increase the translucency of high-translucent zirconia. Low-temperature degradation had no effect on the translucency of high-translucent zirconia. Speed sintering can be recommended for high-translucent zirconia in terms of translucency.
本研究旨在评估快速烧结和低温降解对高透光氧化锆透明度的影响。
ST 和 TT 试件根据烧结工艺随机分为两组：常规烧结和快速烧结。烧结后的试件根据老化时间分为三组：老化 0、5 和 20 h。在黑暗环境下，使用 Shade Eye NCC 电脑比色计在黑白背景下测量色度参数（L*、a和 b值），并用透光率参数（TP）评估氧化锆的透明度。
快速烧结可能降低 ST 的 TP 并增加 TT 的 TP。至于低温降解对氧化锆透明度的影响，ST 的 TP 随老化时间的延长而降低，快速烧结 ST 无显著差异。虽然 TT 的 TP 降低，但无统计学差异。
快速烧结可能降低高强度氧化锆的透明度并增加高透光氧化锆的透明度。低温降解对高透光氧化锆的透明度没有影响。就透明度而言，快速烧结可用于高透光氧化锆。
