纤维增强树脂桩钉与非金属核材料粘结性能的对照研究

Study on the Adhesive Strength between S-glass Fiber Reinforced Composite Posts and Three Different Non-metal Core Material

目的 :研究纤维增强树脂桩钉 (s -glassfiberreinforcedcomposites,FRC)与 3种核成形材料的粘结性能。方法 :用 3种核成型材料在FRC桩钉上分别制作核桩试件 ,将试件按材料种类和制作方法分成 4组 :A组 :FRC桩钉 +Coreshade(日本松风 ) ;B组 :FRC桩钉 +AB双组分复合树脂 ;C组 :FRC桩钉 +Charisma通用型复合树脂 ;D组 :FRC桩钉 +釉质粘合剂 +Charisma通用型复合树脂。在万能力学试验机上测试桩钉与核的粘结力。结果 :不同的核材料与FRC桩钉的粘结力差异有显著性 (P <0 .0 5 ) ,由大到小的顺序为 :B组 >D组 >C组 >A组。其中B组的粘结力最大 ,为 (345 .0± 2 7.6 )N ,A组的值最低 ,为 (14 4 .7± 9.6 )N。结论 :不同的核材料与FRC桩钉的粘结力不同 ,临床使用FRC桩钉时应选用流动性较好。

Objective: To study the adhesive strength between S-glass fiber reinforced composites (FRC) posts and three different non-metal core materials. Methods: The post and core specimen were fabricated by use of FRC posts and three different non-metal core material, then the specimen were divided into four groups according to the core material and fabricate methods. Group A: FRC posts and Shofu Coreshade cement cores; Group B: FRC posts and AB composite resin with two components; Group C: FRC posts and the Charisma universal composite resin; Group D:FRC posts, adhesion and the Charisma universal composite resin. The adhesive strength between S-glass fiber reinforced composites posts and three different non-metal core materials was measured on the universal testing machine. Results: The adhesive strength between S-glass fiber reinforced composites posts and core materials was different. the AB composite resin with two components reached the maximum of (345.0±27.6)N and the Coreshade was the minimum of (144.7±9.6)N. SEM revealed that there were distinct cracks between the FRC posts and Coreshade, while the bonding interface was fare between the AB composite resin with two components and the FRC posts. Conclusions: The adhesive strength between S-glass fiber reinforced composites and core materials was different. We should use the composite core material with low viscosity and high strength for FRC posts in clinic.