Department of Prosthodontics, Heidelberg University Hospital, Heidelberg, Germany.
J Prosthet Dent. 2010 Feb;103(2):108-17. doi: 10.1016/S0022-3913(10)60014-5.
The wear behavior of newly developed denture teeth with nanofillers may be different from teeth with other chemical formulations.
The purpose of this study was to examine the 3-body wear resistance of 11 different commercially available resin denture teeth.
The materials tested were conventional (SR Orthotyp PE, Orthognath) and cross-linked acrylic resin teeth without inorganic fillers (Premium 8, SR Postaris DCL, Trubyte Portrait, Artiplus), composite resin teeth with inorganic fillers (SR Orthosit PE, Vitapan), and composite resin teeth (experimental materials) with inorganic nanofillers (NC Veracia Posterior, e-Ha, Mondial). Human enamel and a ceramic denture tooth (Lumin Vacuum) were used as reference materials. The 3-body wear test was performed in a wear machine developed by the Academic Center for Dentistry Amsterdam (ACTA), with millet suspension acting as an abrasive medium (n=10, test load: 15 N, slip rate: 20%, number of cycles: 100,000). Wear was determined with the aid of a profilometer. Data were analyzed with the Kruskal-Wallis test and Mann-Whitney U test using the closed testing approach (significance level for familywise error rate, alpha=.05).
None of the acrylic and composite resin materials tested in this study demonstrated the 3-body wear resistance of ceramic teeth or human enamel. Teeth with inorganic fillers demonstrated significantly lower wear values than conventional or cross-linked acrylic resin teeth without fillers. Composite resin teeth with traditional fillers showed significantly lower wear than composite resin teeth with nanofillers.
Denture teeth with and without inorganic fillers differed significantly with regard to the degree of wear generated in the ACTA wear simulator. The incorporation of nanofillers did not improve the wear resistance compared to teeth with traditional fillers.
新开发的具有纳米填充物的义齿的磨损行为可能与其他化学配方的义齿不同。
本研究旨在检查 11 种不同市售树脂义齿的 3 体耐磨性能。
测试的材料包括常规（SR Orthotyp PE、Orthognath）和不含无机填料的交联丙烯酸树脂牙（Premium 8、SR Postaris DCL、Trubyte Portrait、Artiplus）、具有无机填料的复合树脂牙（SR Orthosit PE、Vitapan）和具有无机纳米填料的复合树脂牙（实验材料）（NC Veracia Posterior、e-Ha、Mondial）。人牙釉质和陶瓷义齿（Lumin Vacuum）用作参考材料。3 体磨损试验在阿姆斯特丹牙科学院学术中心（ACTA）开发的磨损机上进行，使用小米悬浮液作为磨料介质（n=10，试验载荷：15 N，滑动率：20%，循环次数：100000）。借助轮廓仪确定磨损量。使用 Kruskal-Wallis 检验和 Mann-Whitney U 检验（封闭检验方法）对数据进行分析，检验水平为组间错误率（alpha=.05）。
本研究中测试的所有丙烯酸树脂和复合树脂材料均未表现出陶瓷牙或人牙釉质的 3 体耐磨性能。具有无机填料的义齿的磨损值明显低于无填料的常规或交联丙烯酸树脂义齿。具有传统填料的复合树脂牙的磨损值明显低于具有纳米填料的复合树脂牙。
具有和不具有无机填料的义齿在 ACTA 磨损模拟器中产生的磨损程度有显著差异。与具有传统填料的义齿相比，纳米填料的加入并不能提高耐磨性。
