Efek antibakteri ekstrak daun Sukun terhadap viabilitas biofilm Streptococcus sanguinis ATCC 10556 : in vitro = The antibacterial effect of breadfruit leaf's extract on viability of biofilm of Streptococcus sanguinis ATCC 10556 : in vitro (Fakultas Kedokteran Gigi Universitas Indonesia, 2012)