OBJECTIVES To test and compare five pressable lithium-X-silicate-ceramics on their mechanical and wear properties. METHODS Specimens were pressed and prepared from: i. Amber Press (AP), ii. Celtra Press (CP), iii. Initial LiSi Press (IL), iv. Livento Press (LP), and v. IPS e.max Press (IE). Four-point flexural strength (FS), SEVNB fracture toughness (KIC), three-body wear (3BW), Martens hardness (HM) and indentation modulus (EIT) were measured. For CP, FS and HM were measured with and without additional Power Firing. Each subgroup contained 15 specimens. Data were analyzed using Kolmogorov-Smirnov, one-way ANOVA followed by Scheffé test, Kruskal-Wallis-H-, Mann-Whitney-U-, and Spearman-Rho-test (p < 0.05). The Weibull modulus was calculated using the maximum likelihood estimation method. RESULTS AP and CP presented higher FS than IL. LP presented the highest Weibull modulus. CP showed lower KIC values than AP, and AP was not significant compared to LP and IE. The most 3BW material loss was observed for CP. CP revealed higher HM values than the remaining ceramics. IL presented lower EIT compared to AP and CP. The following correlations were observed between the test parameters: 3BW with FS (r = 0.279, p = 0.015), with HM (r = -0.378, p = 0.001), and with EIT (r = -0.344, p = 0.004); EIT with FS (r = 0.203, p = 0.028); and HM with FT (r = -0.223, p = 0.027) and EIT (r = 0.884, p < 0.001). No correlations were observed between FS and KIC (r = 0.046; p = 0.346). SIGNIFICANCE AP followed by LP showed the highest and IL followed by CP the lowest properties tested. Power Firing of CP improved the flexural strength. Ceramics with high flexural strength and Martens parameters showed lower wear. Materials with high Martens hardness presented lower fracture toughness values and ones with high indentation modulus showed high flexural strength.

中文翻译：

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可压锂-X-硅酸盐陶瓷的抗弯强度，断裂韧性，三体磨损和Martens参数。

目的测试并比较五种可压制的X-硅酸锂陶瓷的机械性能和磨损性能。方法从以下方法压制样品：琥珀色印刷机（AP），ii。Celtra印刷机（CP），iii。初始LiSi印刷机（IL），iv。Livento Press（LP）和IPS e.max Press（IE）。测量了四点弯曲强度（FS），SEVNB断裂韧性（KIC），三体磨损（3BW），马氏硬度（HM）和压痕模量（EIT）。对于CP，在有和没有附加功率激发的情况下测量FS和HM。每个亚组包含15个标本。使用Kolmogorov-Smirnov，单向方差分析，Scheffé检验，Kruskal-Wallis-H-，Mann-Whitney-U-和Spearman-Rho检验对数据进行分析（p <0.05）。使用最大似然估计方法计算威布尔模量。结果AP和CP的FS高于IL。LP表现出最高的威布尔模量。CP显示出比AP低的KIC值，与LP和IE相比，AP无显着性。对于CP，观察到最大的3BW材料损失。CP显示出比其余陶瓷更高的HM值。与AP和CP相比，IL的EIT较低。在测试参数之间观察到以下相关性：3BW，FS（r = 0.279，p = 0.015），HM（r = -0.378，p = 0.001），EIT（r = -0.344，p = 0.004）；FS的EIT（r = 0.203，p = 0.028）; HM与FT（r = -0.223，p = 0.027）和EIT（r = 0.884，p <0.001）。在FS和KIC之间未观察到相关性（r = 0.046； p = 0.346）。重要性AP和LP表现出最高的性能，IL和CP表现出最低的性能。CP的Power Firing改善了弯曲强度。具有高弯曲强度和Martens参数的陶瓷显示出较低的磨损。马氏硬度高的材料具有较低的断裂韧性值，而压痕模量高的材料则具有较高的弯曲强度。