摘要
目的研究镀金对牙科VB钢材料在人工唾液中金属铍离子析出的影响。方法用电感耦合等离子体发射光谱法(ICP-AES)检测普通镍铬合金烤瓷全冠组(对照组)、打磨后镍铬合金烤瓷全冠组(打磨组)、喷砂镀金镍铬合金烤瓷全冠组(镀金组)及喷砂镀金加时50%镍铬合金烤瓷全冠组(镀金加时50%组)在人工唾液中1个月末、3个月末、6个月末铍离子的析出量,比较不同处理因素对铍离子析出量的影响以及同一处理下铍离子析出在不同时间的变化规律。结果在不同处理方法下,铍离子析出总量的比较有统计学意义(P<0.01),打磨组>对照组>镀金组>镀金加时50%组。在同一处理因素下,铍离子的析出总量随着浸泡时间的延长而增加,呈现连续性,6个月末时最大;铍离子的析出速率随着浸泡时间的延长而降低,呈现连续性,6个月末时最小。结论镍铬合金烤瓷全冠表面镀金处理能降低铍离子的析出量,从而提高镍铬合金烤瓷全冠的生物相容性。
Objective To evaluate the effect of gilding technique on the element release from Vera Bond Ni-Cr- Be alloy exposed to artificial saliva. Methods To measure the quantity of beryllium ion which was released from common used Ni-Cr porcelain crown（controlling group）, polished Ni-Cr porcelain crown（polished group）, gilded Ni-Cr porcelain crown （gold-plating group） and gilded Ni-Cr porcelain crown prolonged 50% （gold-plating prolonged 50% group） in artificial saliva after 1 month, 3 months and 6 months by means of ICP-AES. So the effect of released beryllium ion with different treatments and the rule of different times with the same treatment were compared. Results The quantity of released beryllium ion was statistic significant among different treatments. The quantity of released beryllium ion was gradually increased with the same treatment. At the end of this experiment, it was reached the highest. The speed of released beryllium ion was gradually decreased with the same treatment. At the end of this experiment it was reached the lowest. Conclusion The gilding treatment can decrease the quantity of beryllium ion which released from Ni-Cr porcelain crown, and improve the biocompatihility.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2007年第1期8-11,共4页
West China Journal of Stomatology
基金
四川省科委应用基础基金资助项目(02SY029-117)
关键词
镍铬合金
镀金
冠
离子析出
nickel-chromium alloy
gold-plating
crown
element release
