The antimicrobial action of chlorhexidine-containing zinc-phosphate cement. 
In this study chlorhexidine dihydrochloride and diacetate salts were incorporated at a low level into a zinc-phosphate luting cement.  Inhibition of three cariogenic organisms by cement specimens aged up to 8 weeks was significantly greater than the bacterial inhibition of unaltered zinc-phosphate cement.  The addition of chlorhexidine caused no significant degradation in strength, film thickness, or solubility of the cement.