使用聚甲基丙烯酸甲酯（PMMA）或双甲基丙烯酸缩水甘油酯（Bis-GMA）树脂羟基磷灰石骨水泥进行骨水泥固定：种植体表面粗糙度的影响。
Cemented fixation with PMMA or Bis-GMA resin hydroxyapatite cement: effect of implant surface roughness.
作者信息
Walsh W R, Svehla M J, Russell J, Saito M, Nakashima T, Gillies R M, Bruce W, Hori R
机构信息
Orthopaedic Research Laboratories, University of New South Wales, Prince of Wales Hospital, Sydney, NSW 2031, Australia.
出版信息
Biomaterials. 2004 Sep;25(20):4929-34. doi: 10.1016/j.biomaterials.2003.12.020.
Implant surface roughness is an important parameter governing the overall mechanical properties at the implant-cement interface. This study investigated the influence of surface roughness using polymethylmethcrylate (PMMA) and a Bisphenol-a-glycidylmethacyrlate resin-hydroxyapatite cement (CAP). Mechanical fixation at the implant-cement interface was evaluated in vitro using static shear and fatigue loading with cobalt chrome alloy (CoCr) dowels with different surface roughness preparations. Increasing surface roughness improved the mechanical properties at the implant-cement interface for both types of cement. CAP cement fixation was superior to PMMA under static and dynamic loading.
种植体表面粗糙度是决定种植体与骨水泥界面整体力学性能的一个重要参数。本研究使用聚甲基丙烯酸甲酯（PMMA）和双酚A-甲基丙烯酸缩水甘油酯树脂-羟基磷灰石骨水泥（CAP），调查了表面粗糙度的影响。通过使用具有不同表面粗糙度处理的钴铬合金（CoCr）销钉，在体外采用静态剪切和疲劳加载对种植体与骨水泥界面的机械固定进行了评估。对于两种类型的骨水泥，表面粗糙度增加均改善了种植体与骨水泥界面的力学性能。在静态和动态加载条件下，CAP骨水泥固定均优于PMMA。
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