Study on content of nickel in saliva released from the nickel-chromium and the nickel-chromium-titanium porcelain alloy
WANG Wen-jie1, ZHANG Tai-qiang2, WEI Hong1
West China Journal of Stomatology . 2010, (01): 45 -47 .  DOI: 10.3969/j.issn.1000-1182.2010.01.012