Effect of a novel quaternary ammonium silane on dentin protease activities

The newly developed antibacterial quaternary ammonium silane increases the
resistance of dentin collagen to degradation by inhibiting endogenous matrix metalloproteinases and
cysteine cathepsins. The quaternary ammonium silane cavity disinfectant is promising for use as a
protease inhibitor to improve durability of resin-dentin bonds.

Anti-herpes viral effects of a novel broad range anti-microbial quaternary ammonium silane, K21

In order to design a QAC with enhanced antimicrobial
properties, we developed ethoxylated version of the QAC, called
K21, which was tested effective against Porphyromonas gingivalis

and Enterococcus faecalis (Meghil et al., 2015). With an intention of
using K21 in dental materials, we tested efficacy of K21 against
some of the human herpes viruses including HSV-1, HHV-6A, HHV-
6B and HHV-7 that reside in the human oral cavities and are shed in
the saliva to induce infection.