Jayaprakash K, Kumar Shetty K Harish, Shetty A Nityananda, Nandish Bantarahalli Thopegowda
Department of Dental Materials, Yenepoya Dental College, Yenepoya University, Mangalore, Karnataka, India.
Department of Conservative Dentistry, Yenepoya Dental College, Yenepoya University, Mangalore, Karnataka, India.
J Conserv Dent. 2017 May-Jun;20(3):199-203. doi: 10.4103/0972-0707.218304.
The aim of this study was to quantitatively estimate the concentration of ion release from recasted base metal alloys in various pH conditions using atomic absorption spectroscopy (AAS).
Specimens of commercially available dental casting alloys (cobalt [Co]-chromium [Cr] and nickel [Ni]- chromium [Cr]) were prepared using lost-wax casting techniques and were stored in the test solution for 1 week and 4 weeks, and ions released during chemical corrosion were detected using AAS.
An increase in the quantity of ion release was observed with recasting. These changes were higher after twice recasting in Ni-Cr alloy.
本研究的目的是使用原子吸收光谱法(AAS)定量评估在各种pH条件下重铸贱金属合金的离子释放浓度。
采用失蜡铸造技术制备市售牙科铸造合金(钴[Co]-铬[Cr]和镍[Ni]-铬[Cr])的试样,并将其在测试溶液中储存1周和4周,使用AAS检测化学腐蚀过程中释放的离子。
观察到重铸后离子释放量增加。在镍铬合金中进行两次重铸后,这些变化更大。