Torgersen S, Gjerdet N R
Department of Dental Materials, School of Dentistry, University of Bergen, Norway.
Acta Odontol Scand. 1992 Apr;50(2):83-9. doi: 10.3109/00016359209012750.
Surgical arch bars (splints) are used in maxillofacial surgery as an aid to intermaxillary fixation procedures. Two different types of stainless steel arch bars, a solid bar and a silver-brazed bar, were studied with regard to metal release in vitro. Arch bars were ligated to jaw models and immersed in 0.9% saline solution. The electrolyte was analyzed for Ni, Cr, Fe, Cu, Zn, and Cd by atomic absorption spectrophotometry on days 3, 10, and 28. The amounts of metal released from the brazed arch bar were 140-600 times higher than those released from the solid arch bar. Clinical implications are suggested.
外科牙弓夹板用于颌面外科手术，辅助颌间固定程序。研究了两种不同类型的不锈钢牙弓夹板，一种实心杆和一种银钎焊杆，关于它们在体外的金属释放情况。将牙弓夹板结扎到颌骨模型上，并浸入0.9%的盐溶液中。在第3天、第10天和第28天，通过原子吸收分光光度法分析电解质中的镍、铬、铁、铜、锌和镉。从钎焊牙弓夹板释放的金属量比从实心牙弓夹板释放的金属量高140 - 600倍。文中提出了临床意义。
