摘要
目的探讨自行合成具有粘结性功能的二甲基丙烯酸乙氧基均苯四甲酸酯(PMDM)功能单体和4-META添加对桩核树脂机械性能的影响。方法使用双丝杆电子拉力机、显微硬度仪进行测试,比较不含功能单体、含PMDM和含4-META对桩核树脂的挠曲强度、吸水值及硬度的影响。结果含PMDM组挠曲强度和硬度大于4-META组和不含功能单体组(P<0.05)。含PMDM组吸水值小于含4-META组和不含功能单体组(P<0.05)。结论 PMDM比4-META更适合在修复树脂中作为功能单体使用。
Objective To explore the effect of functional monomer PyroMellitic DiMethacrylate（PMDM）and 4-methacryloxyethyl trimellitic anhydride（4-META） on properties of composite resin core materials.Methods The resins were mixed without functional monomer,with PMDM and with 4-META,respectively.Then their flexural strength,water absorption and hardness were measured by universal testing machine,Dynamic Ultra Micro Hardness Tester in three groups.Results The flexural strength and hardness in PMDM group were significantly higher than in the other two groups（P0.05）,while the water absorption was significantly lower in PMDM group than in the other two groups（P0.05）.Conclusion PMDM may be more suitable than 4-META as a functional monomer for the composite resin.
出处
《山西医科大学学报》
CAS
2011年第3期205-207,共3页
Journal of Shanxi Medical University
关键词
功能单体
桩核树脂
物理机械性能
functional monomer
composite resin core materials
mechanical properties
