In vitro fracture fixation: dhesive systems compared with a conventional technique

To find out whether adhesive techniques could have a role in bone fixation in selected cases an in vitro comparison between the current ‘Champy’ miniplate system and bonded stainless steel was undertaken using cyanoacrylate or dental composite cement. 33 bovine ribs were sectioned to simulate fracture separation, divided randomly into three groups, and immobilised by one of the three treatments. Distraction across the ‘fracture’ was produced using a universal testing apparatus, and forces at failure were recorded in Newtons (N). Image analysis enabled the contact area of the adhesive to be determined in mm2, so the bond strength in N/mm2 was derived. The Champy system failed at a significantly greater force (N) than the adhesives (p=0.000). There was no significant difference in bond strength between either of the adhesive systems tested.