Interestingly, hydroxychavicol exhibited an extended post antibiotic effect of 6 to 7 h and prevented the
emergence of mutants of S. mutans ATCC 25175 and Actinomyces viscosus ATCC 15987 at 2 MIC. Furthermore,
it also inhibited the growth of biofilms generated by S. mutans and A. viscosus and reduced the preformed
biofilms by these bacteria