Evans D B, Neme A M
18th Dental Squadron/SGDA, Kadena Area Dental Laboratory, APO AP 96368-5270, USA.
Am J Dent. 1999 Feb;12(1):19-25.
To determine the effects of several multi-purpose dental adhesive systems on the shear bond strength of both composite resin (Herculite XRV) and amalgam (Tytin) to dentin.
160 extracted human molar teeth were randomly assigned to 16 treatment groups (n = 10/group), embedded in resin, and ground flat on both the occlusal and apical surfaces to expose a 3.0 mm thickness of dentin. In each specimen, a 3.18 mm diameter channel was drilled through the dentin perpendicular to the ground surface. The cylindrical preparations were treated with one of seven adhesive systems or one of two controls (37% H3PO4 or Copalite varnish) according to manufacturers' recommendation, then restored with either composite resin or amalgam. Specimens were thermocycled and subjected to a punch-out shear force using a materials testing machine.
All examined multi-purpose adhesive systems provided increased shear bond strength in comparison to the controls. Although the individual performance of each adhesive system varied with specific restorative materials, OptiBond FL demonstrated the highest mean shear bond strength to both composite resin and amalgam. Mean amalgam shear bond strength was significantly greater than mean composite resin strengths.
确定几种多功能牙科粘结系统对复合树脂（Herculite XRV）和汞合金（Tytin）与牙本质之间剪切粘结强度的影响。
160颗拔除的人类磨牙随机分为16个治疗组（每组n = 10），嵌入树脂中，并在咬合面和根尖面磨平，以暴露出3.0毫米厚的牙本质。在每个标本中，垂直于磨平表面在牙本质上钻一个直径3.18毫米的通道。根据制造商的建议，用七种粘结系统之一或两种对照（37%磷酸或Copalite清漆）之一处理圆柱形制备物，然后用复合树脂或汞合金修复。对标本进行热循环处理，并使用材料试验机施加冲出剪切力。
与对照组相比，所有检测的多功能粘结系统均提高了剪切粘结强度。尽管每种粘结系统的个体性能因特定的修复材料而异，但OptiBond FL对复合树脂和汞合金均表现出最高的平均剪切粘结强度。汞合金的平均剪切粘结强度显著高于复合树脂的平均强度。
