Based on these findings obtained for the
experimental material, MDPB was utilized
successfully in the commercial adhesive (Clearfil
Protect Bond, Kuraray Medical, Fig. 4). This adhesive
is a two-step self-etching system, employing a single-
bottled 5% MDPB-containing primer. Owing to the
effects of the incorporated MDPB, the primer of
Clearfil Protect Bond system shows cavity-
disinfecting effects13)
. Therefore, this adhesive
contributes to a reduction in the risk of secondary
caries and to saving the pulp in caries treatment.