Hoffmann Moritz, Schmeiser Felix, Donmez Mustafa Borga, Meinen John, Stawarczyk Bogna
Department of Prosthetic Dentistry, Dental School, Ludwig-Maximilians-Universität München, 80336 Munich, Germany.
Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, 3010 Bern, Switzerland.
Materials (Basel). 2024 Aug 1;17(15):3777. doi: 10.3390/ma17153777.
This study aimed to evaluate the effect of airborne particle abrasion with different particles on the surface free energy, roughness, and biaxial flexural strength of a feldspathic ceramic by comparing it with hydrofluoric acid etching, the standard surface treatment, and polishing. Square-shaped feldspathic ceramic specimens (12 mm × 12 mm × 1.2 mm) were divided into subgroups as airborne particles abraded with alumina (AO3a, AO3b, AO25, AO50a, AO50b, AO90, AO110a, AO110b, AO120a, and AO120b), silica (SO50a, SO50b, SO100, and SO100/200), or nutshell granule (NS100/200), hydrofluoric acid etched, and polished (n = 12). Surface free energy (n = 5), roughness (n = 5), biaxial flexural strength (n = 12), and Weibull moduli (n = 12) were investigated. Data were evaluated with 1-way ANOVA and Tukey HSD tests, and possible correlations were investigated with Pearson's correlation (α = 0.05). SO100/200 mostly had lower surface free energy ( ≤ 0.011), and polishing and etching led to higher surface free energy than AO3a, AO3b, and AO120a ( ≤ 0.031). Polished, SO100, and SO50b specimens mostly had lower roughness and AO125 had the highest roughness ( ≤ 0.029). SO100/200 mostly had lower biaxial flexural strength ( ≤ 0.041), and etched specimens had higher biaxial flexural strength than AO120a, AO120b, and SO50b ( ≤ 0.043). AO3b had the highest (33.56) and AO120b had the lowest (11.8) Weibull modulus. There was a weak positive correlation between the surface free energy and the biaxial flexural strength (r = 0.267, = 0.011). A larger particle size mostly resulted in higher roughness, which was also affected by the particle shape. Most of the test groups had similar biaxial flexural strength to that of the hydrofluoric acid-etched group. Therefore, for tested feldspathic ceramic, airborne particle abrasion with tested parameters may be a suitable alternative without causing any further damage.
本研究旨在通过将不同颗粒的空气颗粒磨损与氢氟酸蚀刻（标准表面处理）和抛光进行比较，评估其对长石质陶瓷表面自由能、粗糙度和双轴弯曲强度的影响。将方形长石质陶瓷试样（12 mm×12 mm×1.2 mm）分为用氧化铝（AO3a、AO3b、AO25、AO50a、AO50b、AO90、AO110a、AO110b、AO120a和AO120b）、二氧化硅（SO50a、SO50b、SO100和SO100/200）或坚果壳颗粒（NS100/200）进行空气颗粒磨损、氢氟酸蚀刻和抛光的亚组（n = 12）。研究了表面自由能（n = 5）、粗糙度（n = 5）、双轴弯曲强度（n = 12）和威布尔模量（n = 12）。数据采用单因素方差分析和Tukey HSD检验进行评估，并采用Pearson相关性分析研究可能的相关性（α = 0.05）。SO100/200大多具有较低的表面自由能（≤0.011），且抛光和蚀刻导致的表面自由能高于AO3a、AO3b和AO120a（≤0.031）。抛光、SO100和SO50b试样大多具有较低的粗糙度，而AO125具有最高的粗糙度（≤0.029）。SO100/200大多具有较低的双轴弯曲强度（≤0.041），且蚀刻试样的双轴弯曲强度高于AO120a、AO120b和SO50b（≤0.043）。AO3b的威布尔模量最高（33.56），AO120b的威布尔模量最低（11.8）。表面自由能与双轴弯曲强度之间存在弱正相关（r = 0.267，P = 0.011）。较大的粒径大多导致较高的粗糙度，这也受颗粒形状的影响。大多数测试组的双轴弯曲强度与氢氟酸蚀刻组相似。因此，对于测试的长石质陶瓷，采用测试参数的空气颗粒磨损可能是一种合适的替代方法，不会造成任何进一步的损伤。
