AB STRACT: The ef fi cacy of the flu o ride-chlorhexidine as so ci a tion in the pre ven tion of gin gi vi tis and car ies has been ad vo cated for a num ber of years5,7,14. The ob jec tive of the as so ci a tion of these ther a peu tic agents is a syn er gis tic ac tion. The aim of the pres ent study was to de ter mine the substantivity of chlorhexidine as so ci ated or not to so dium flu o ri...

A new method for the histochemical demonstration of leucine aminopeptidase in fresh frozen sections was developed with the substrate L-leucyl-4-methoxy2-naphthylamide. The superior enzyme localization is due to the more rapid rate of coupling of the hydrolysis product, 4-methoxy-2-naphthylamine as compared to 2-naphthylamine itself, and to the low lipid solubility and high substantivity for pro...

The present research analyzed the reciprocating instrumentation associated to chlorhexidine (CHX) substantivity as its correlation with E. faecalis viability in ex vivo root canals. Eighty extracted single-rooted human teeth were used, being 40 high-performance liquid chromatography (HPLC) and confocal laser scanning microscopy (CLSM). In both, decoronated cervical third was prepared. CLSM anal...

A new method for the histochemical demonstration of leucine aminopeptidase in fresh frozen sections was developed with the substrate L-leucyl-4-methoxy-2-naphthylamide. The superior enzyme localization is due to the more rapid rate of coupling of the hydrolysis product, 4-methoxy-2-naphthylamine as compared to 2-naphthylamine itself, and to the low lipid solubility and high substantivity for pr...