钴铬合金烤瓷牙的优缺点 杨炼 北京电力医院

钴铬合金烤瓷牙的优缺点 杨炼 北京电力医院
钴铬合金的烤瓷牙是烤瓷牙中的一种，作为基底层的钴铬合金当初是针对镍铍等毒性很强而开发的，开始称之为无镍无铍合金，其抗腐蚀性很强，但少有金属离子析出，而牙龈也很少受到刺激，过敏的情况也较少发生，因此它属于生物相容性比较好的，其次钴铬合金和外侧这一层瓷的结合力较纯钛好，价格也比较居中，在临床应用上较为广泛，但钴铬合金仍属于普通合金，边缘密合性较贵金属合金差，且做核磁共振检查的时候，金属伪影会对周围的组织图象产生一定的影响。

Advantages and disadvantages of CO Cr alloy porcelain teeth
Cobalt chromium alloy is one of the porcelain teeth, Cobalt chromium alloy, as the base layer, was originally developed for its high toxicity, such as nickel beryllium, It was initially called nickel free beryllium free alloy, Its corrosion resistance is very strong, However, few metal ions are precipitated, And gums are rarely stimulated, Allergies are less common, So it's biocompatible, Secondly, the bonding strength of the outer layer of the porcelain with the cobalt chromium alloy is better than that with the pure titanium, The price is also in the middle, It is widely used in clinical practice, However, cobalt chromium alloy is still a common alloy, The edge tightness is worse than that of precious metal alloy, And when you do an MRI, Metal artifacts will have a certain impact on the surrounding tissue image.