Variation in subgingival flora of abutments before and after removal of nickel-chromium alloy porcelain-fused-to-metal restoration

Guo Da-wei, Song Ling, Zhang Chun-yan, Cao Yang, Li Jing-wen, Liang Xing

Chinese Journal of Tissue Engineering Research . 2013, (51): 8834 -8840 . DOI: 10.3969/j.issn.2095-4344.2013.51.009