A majority of Canadian dentists do put mercury-silver amalgams in teeth today, though it is now banned in many other countries.  And they also place 'pit & fissure sealants' in kids every day in every office too - but to put sealant over active decay can be disastrous.  This new compound is a vastly different thing.  It is a powerful anti-septic substance which aggressively kills the caries-decay-causing bacteria within the tooth structure unlike anything which came before it.  It is fairly revolutionary.  Most GP dentists will be thrilled to not have to drill and fill as many kids as so many are difficult to work on (esp if the helicopter parent is present)