两种粘结系统树脂粘结剂机械强度的对比(英文)

A comparison study on the mechanical strength of two resin cements

背景:目前市场上可供选择的瓷粘结系统品种很多,机械强度是树脂水门汀能否应用于临床的先决条件。目的:观察Panavia F树脂粘结剂和自制树脂粘结剂机械强度的差异。设计、时间及地点:对比观察实验,于2006-05/2007-03在解放军第四军医大学修复实验室完成。材料:Panavia F树脂粘结剂由日本KURARAY MEDICAL INC.提供,自制树脂粘结剂由解放军第四军医大学口腔医学院研制。方法:分别制作高8mm,直径4mm的不同树脂粘结剂的圆柱形压缩强度试件5个,高3mm,直径6mm的圆柱形径向抗张强度试件5个,在AGS-500万能材料试验机测其压缩强度和径向抗张强度。主要观察指标:不同粘结系统中树脂粘结剂的压缩强度和径向抗张强度。结果:Panavia F树脂粘结剂的压缩强度明显高于自制树脂粘结剂[(238.92±24.54),(149.08±12.13)MPa,P<0.05],两者的径向抗张强度差异无显著性意义(P>0.05)。结论:充分固化后两种树脂水门汀的径向抗张强度相近;虽然自制树脂粘结剂压缩强度低于Panavia F树脂粘结剂,但远高于ADA的规定标准(>70MPa),可满足临床要求。

There are many species of ceramic bonding systems supplied in market, the mechanical strength is a prerequisite condition for resin cement in clinical use. OBJECTIVE： To study the difference of mechanical strength between Panavia F resin cement and self-made resin cement. DESIGN, TIME AND SETTING： A controlled observational study was performed in the prosthesis laboratory of the Fourth Military Medical University of Chinese PLA between May 2006 and March 2007. MATERIALS： Panavia F resin cement was sourced from KURARAY MEDICAL INC. （Japan）, experimental resin cement was produced by College of Stomatological Medicine in the Fourth Military Medical University of Chinese PLA. METHODS： Five cylindrical compressive strength specimens at an 8-mm height and 4-mm diameter were prepared, as well as 5 cylindrical diametral tensile strength specimens at a 3-mm height and 6-mm diameter. AGS-500 universal material testing machine was applied to detect the compressive strength and diametral tensile strength. MAIN OUTCOME MEASURES： The diametral tensile strength test and compressive strength test of the specimens. RESULTS： The compressive strength of Panavia F resin cement was remarkably higher than that of experimental cement [（238.92_＋24.54）, （149.08_＋12.13） MPa, P 〈 0.05]. There were no significances between two resin cements on diametral tensile strength （P 〉 0.05）. CONCLUSION： There were no significance between two resin cements on diametral tensile strength following complete curing. The compressive strength of experimental resin cement can reach the standard of ADA （〉 70 MPa） although it is lower than the compressive strength of Panavia F resin cement.