Efek antibakteri ekstrak daun sukun terhadap viabilitas biofilm Streptococcus mutans ATCC 25175 : in vitro = The antibacterial effect of breadfruit leaf's extract on viability of biofilm of Streptococcus mutans ATCC 25175 : in vitro (Fakultas Kedokteran Gigi Universitas Indonesia, 2013)