Furuichi T, Takamizawa T, Tsujimoto A, Miyazaki M, Barkmeier W W, Latta M A
Oper Dent. 2016 May-Jun;41(3):E83-92. doi: 10.2341/15-033-L. Epub 2016 Feb 26.
The present study determined the mechanical properties and impact-sliding wear characteristics of self-adhesive resin cements. Five self-adhesive resin cements were used: G-CEM LinkAce, BeautiCem SA, Maxcem Elite, Clearfil SA Automix, and RelyX Unicem 2. Clearfil Esthetic Cement was employed as a control material. Six specimens for each resin cement were used to determine flexural strength, elastic modulus, and resilience according to ISO specification #4049. Ten specimens for each resin cement were used to determine the wear characteristics using an impact-sliding wear testing apparatus. Wear was generated using a stainless-steel ball bearing mounted inside a collet assembly. The maximum facet depth and volume loss were determined using a noncontact profilometer in combination with confocal laser scanning microscopy. Data were evaluated using analysis of variance followed by the Tukey honestly significantly different test (α=0.05). The flexural strength of the resin cements ranged from 68.4 to 144.2 MPa; the elastic modulus ranged from 4.4 to 10.6 GPa; and the resilience ranged from 4.5 to 12.0 MJ/m(3). The results for the maximum facet depth ranged from 25.2 to 235.9 μm, and volume loss ranged from 0.0107 to 0.5258 mm(3). The flexural properties and wear resistance were found to vary depending upon the self-adhesive resin cement tested. The self-adhesive cements tended to have lower mechanical properties than the conventional resin cement. All self-adhesive resin cements, apart from G-CEM LinkAce, demonstrated significantly poorer wear resistance than did the conventional resin cement.
本研究测定了自粘结树脂水门汀的力学性能和冲击滑动磨损特性。使用了五种自粘结树脂水门汀：G-CEM LinkAce、BeautiCem SA、Maxcem Elite、Clearfil SA Automix和RelyX Unicem 2。选用Clearfil Esthetic Cement作为对照材料。根据ISO标准#4049，每种树脂水门汀制备六个样本以测定弯曲强度、弹性模量和韧性。每种树脂水门汀制备十个样本，使用冲击滑动磨损测试装置测定磨损特性。磨损通过安装在夹头组件内的不锈钢滚珠轴承产生。使用非接触式轮廓仪结合共聚焦激光扫描显微镜测定最大刻面深度和体积损失。数据采用方差分析，随后进行Tukey真实显著差异检验（α=0.05）。树脂水门汀的弯曲强度范围为68.4至144.2MPa；弹性模量范围为4.4至10.6GPa；韧性范围为4.5至12.0MJ/m³。最大刻面深度结果范围为25.2至235.9μm，体积损失范围为0.0107至0.5258mm³。发现弯曲性能和耐磨性因所测试的自粘结树脂水门汀而异。自粘结水门汀的力学性能往往低于传统树脂水门汀。除G-CEM LinkAce外，所有自粘结树脂水门汀的耐磨性均明显低于传统树脂水门汀。
