Frankenberger Roland, García-Godoy Franklin, Lohbauer Ulrich, Petschelt Anselm, Krämer Norbert
Department of Operative Dentistry and Periodontology, University of Erlangen-Nuremberg, Glueckstrasse 11, D-91054 Erlangen, Germany.
Am J Dent. 2005 Feb;18(1):23-7.
To evaluate different resin-based composites using a variety of in vitro investigation methods to predict their clinical behavior.
Materials selected for this study were Heliomolar radiopaque (microfilled), Tetric Ceram, Pertac II (minifilled hybrids), Ariston pHc (ion releasing hybrid), and Solitaire I (hybrid with porous fillers). The evaluated in vitro criteria were three-body wear according to the ACTA method, microtensile bond strengths to enamel and dentin, flexural strength (four-point bending strength), flexural fatigue behavior (flexural fatigue limit), and calcium ion release (for Ariston pHc).
Concerning wear resistance, Ariston pHc (20.5 microm after 200,000 cycles) was inferior to the other materials (13.7-15.9 microm). Microtensile bond strengths to dentin were similar for Heliomolar (32.0 MPa), Tetric Ceram (30.4 MPa; both bonded with Syntac Classic), and Pertac II (30.8 MPa; bonded with EBS Multi) being above Solitaire I (22.5 MPa; bonded with Solidbond) being above Ariston pHc (13.2 MPa; bonded with Ariston Liner). Enamel bond strengths for Heliomolar (40.0 MPa), Tetric Ceram (36.5 MPa), and Pertac II (38.9 MPa) were significantly higher than for Solitaire I (26.6 MPa) which was above Ariston pHc (7.2 MPa). Heliomolar, Tetric Ceram, and Pertac II revealed higher micro-TBS to enamel than to dentin, Ariston showed the contrary, and Solitare exhibited no difference between enamel and dentin micro-TBS. Solitaire I exhibited a lower initial flexural strength than the other materials, the computed fatigue strength of the material even dropped to the level of glass ionomer cements (17.9 MPa). Long-term calcium release data for Ariston exhibited a continuously high calcium release becoming lower at the end of the observation beyond 21 months.
使用多种体外研究方法评估不同的树脂基复合材料，以预测其临床性能。
本研究选用的材料有不透射线的Heliomolar（微填料）、Tetric Ceram、Pertac II（微填料混合型）、Ariston pHc（离子释放混合型）和Solitaire I（含多孔填料的混合型）。评估的体外标准包括根据ACTA方法测定的三体磨损、与釉质和牙本质的微拉伸粘结强度、弯曲强度（四点弯曲强度）、弯曲疲劳行为（弯曲疲劳极限）以及钙离子释放（针对Ariston pHc）。
在耐磨性方面，Ariston pHc（200,000次循环后为20.5微米）不如其他材料（13.7 - 15.9微米）。Heliomolar（32.0兆帕）、Tetric Ceram（30.4兆帕；均与Syntac Classic粘结）和Pertac II（30.8兆帕；与EBS Multi粘结）与牙本质的微拉伸粘结强度相似，高于Solitaire I（22.5兆帕；与Solidbond粘结），Solitaire I又高于Ariston pHc（13.2兆帕；与Ariston Liner粘结）。Heliomolar（40.0兆帕）、Tetric Ceram（36.5兆帕）和Pertac II（38.9兆帕）与釉质的粘结强度显著高于Solitaire I（26.6兆帕），Solitaire I高于Ariston pHc（7.2兆帕）。Heliomolar、Tetric Ceram和Pertac II与釉质的微拉伸粘结强度高于与牙本质的，Ariston则相反，Solitaire在与釉质和牙本质的微拉伸粘结强度之间无差异。Solitaire I的初始弯曲强度低于其他材料，该材料计算得出的疲劳强度甚至降至玻璃离子水门汀的水平（17.9兆帕）。Ariston的长期钙释放数据显示钙释放持续处于较高水平，在观察超过21个月结束时降低。
