Effect of speed sintering of monolithic zirconia with different yttria contents on color and crystal phase
Effect of speed sintering of monolithic zirconia with different yttria contents on color and crystal phase
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不同氧化钇含量整体氧化锆的快速烧结对颜色和晶相的影响
DOI：
10.1111/eos.12898
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Masanori Fujisawa
中科院分区：
文献类型：
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作者：
Shoko Miura;Akikazu Shinya;Hiroyasu Koizumi;Masanori Fujisawa
本研究评估了经常规或快速烧结处理的不同氧化钇 (Y2O3) 含量的整体氧化锆冠的颜色和微观结构。评估了四种类型的氧化锆陶瓷：两种单层氧化锆和两种多层氧化锆。整体式氧化锆牙冠是使用牙科计算机辅助设计/计算机辅助制造 (CAD/CAM) 系统制造的，有两种颜色（A2 和 BL）。研磨后，使用快速烧结或常规烧结来烧结氧化锆牙冠。对于氧化锆 (4)、色度 (2) 和烧结条件 (2) 的每种组合，使用非接触式牙科分光光度计测定了九个牙冠中每个牙冠的三个位置的颜色参数。此外，还使用 X 射线衍射法对样品中的氧化锆相进行了定量。 BL色组的Multi2牙冠在不同测量位置的ΔE00值存在显着差异。传统和快速烧结程序产生的色差不受 Mono1、Mono2 和 Multi1 氧化钇含量差异的影响。然而，在含有 3Y-TZP 和 5Y-PSZ 的 Multi2 中，由于使用快速烧结而导致颜色变化。因此，当使用Multi2进行快速烧结时，有必要考虑这些结果来选择颜色或采取染色措施。
This study evaluated the color and microstructure of monolithic zirconia crowns with different yttrium oxide (Y2O3) contents treated by conventional or speed sintering. Four types of zirconia ceramics were assessed: two monolayer zirconia, and two multilayer zirconia. The monolithic zirconia crowns were fabricated using a dental computer‐aided design/computer‐aided manufacturing (CAD/CAM) system and in two shades (A2 and BL). After milling, the zirconia crowns were sintered using either speed sintering or conventional sintering. For each combination of zirconia (4), shade (2), and sintering condition (2), the color parameters were determined at three positions of each of nine crowns using a non‐contact dental spectrophotometer. In addition, the zirconia phases in the specimens were quantified using X‐ray diffractometry. Significant differences in the ΔE00values at different measurement positions were observed for the Multi2 crown of the BL shade group. The color difference resulting from conventional and speed sintering programs was not affected by the difference in yttria content of Mono1, Mono2, and Multi1. However, in Multi2, containing 3Y‐TZP and 5Y‐PSZ, a color change was caused by the use of speed sintering. Therefore, when performing speed sintering with Multi2, it is necessary to select the color in consideration of these results or take measures for staining.