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目的:对比相同条件下Ti2448与纯钛的金瓷结合强度,评价Ti2448的烤瓷性能。方法:采用纯钛常规喷砂方法对纯钛和Ti2448分别进行表面处理,测试处理后的金属表面粗糙度、表面能,采用三点弯曲实验对两种金属与Duceratin Kiss瓷粉的结合强度进行评价,采用扫描电镜和能谱分析对金瓷结合界面的显微结构和成分组成进行分析。结果:经相同的喷砂处理后的粗糙度、表面能和三点弯曲结合强度,纯钛组为0.588μm、78.70 mJ/m2和23.89 MPa,Ti2448组为0.621μm、94.17 mJ/m2和31.51 MPa,Ti2448组的各项指标均高于纯钛组,经t检验均具有显著性差异(P<0.05)。扫描电镜和能谱分析结果显示Ti2448组的瓷剥脱面有更多的残留瓷,且有Sn元素贯穿金瓷界面渗入瓷层。结论:利用纯钛的常规表面处理方法对Ti2448进行表面处理能够获得优于纯钛的表面润湿性和瓷结合强度,并达到了临床要求。
OBJECTIVE: To compare the bonding strength between Ti2448 and pure titanium under the same conditions and evaluate the porcelain properties of Ti2448. Methods: Titanium and Ti2448 were respectively surface-treated with pure titanium by conventional sandblasting method. The surface roughness and surface energy of the treated metal were tested. The bonding strength between the two metals and Duceratin Kiss porcelain powder was evaluated by three-point bending test The microstructure and composition of gold-porcelain bonded interface were analyzed by SEM and EDS. Results: The roughness, surface energy and three-point bending strength after the same blasting treatment were 0.588μm, 78.70 mJ / m2 and 23.89 MPa for the pure titanium group, 0.621μm, 94.17 mJ / m2 and 31.51 MPa for the Ti2448 group , Ti2448 group indicators were higher than the pure titanium group, by t test were significant differences (P <0.05). Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis showed that there were more residual porcelain in the Ti2448 group and Sn penetrated into the porcelain layer through the porcelain interface. Conclusion: The surface treatment of Ti2448 by using the conventional surface treatment of pure titanium can obtain better surface wettability and bonding strength than pure titanium, and meet the clinical requirements.