【摘要】 目的测试3种塑料基托材料与人工牙结合后的微拉伸强度。方法3种基托材料:第1组,LUCITONE199;第2组,Palapress vario;第3组,SR Ivocap分别与人工牙制作样本,用Isomet低速切割机流水冲洗下制备成截面为1.0mm×1.0mm的条状试件,测试微拉伸强度。结果第1组(24.5±9.70)MPa的微拉伸强度高于第2组(15.5±3.31)MPa,差异有统计意义;第3组(18.3±4.92)MPa与前两组之间均无统计差异。结论传统的加热聚合树脂基托材料在结合性能方面高于高压灌注的树脂基托,高压灌注联合加热聚合方式的树脂基托与前两者的微拉伸强度均未见统计学差别。更多还原

【Abstract】 Objective To evaluate the microtensile bond strength(MTBS) of three kinds of composite resin denture bases. Methods Three kinds of denture bases were listed as followw:Group 1,LUCITONE199 Densply Inc.USA; Group 2,Palapress vario Heraeus Kulzer GmbH & Co.KG;and Group 3,SR Ivocap Ivoclar Vivadent AG Liechtenstein.They were sectioned by low speed saw both mesial-distally and buccal-lingually along their long axis into 1.0 mm×1.0 mm sticks that were tested in tensile mode.Results Group 1 (24.5±9.70)MPa resulted in statistically higher bond strength than that of Group 2 (15.5±3.31) MPa.No significant difference was found between the results of Group 3 (18.3±4.92)MPa and Group 1,Group 3 (18.3±4.92)MPa and Group 2.Conclusion The microtensile bond strength of traditional methods of composite resin denture base was higher than that of high-press-polymerized denture base.And there was no obvious difference between the denture base processed by high press and high temperature and the former two ones.更多还原