通过鼠伤寒沙门氏菌回复突变试验(Ames试验)对TLE及TLM 2种β型医用钛合金的致突变作用进行生物学评价,试验分别设计5个剂量组、自然回变对照组、溶剂对照组以及阳性对照组,采用平板掺入法在加与不加S9混合液的条件下完成.统计学分析结果显示:2种β型医用钛合金每剂量组各菌株回变菌落数均与自然回变菌落数接近,未超过其2倍,而阳性对照组超过自然回变菌落数的2倍以上.说明TLE,TLM在检测剂量(0.16μl/皿～100 μl/皿)范围内反应结果为阴性,即不具有点突变诱变性.
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