People first began using tooth powders and toothpastes in the 19th century. A long time ago the Romans and the Greeks used crushed bones and oyster shells to clean their teeth. Today we are lucky enough to have pleasant tasting toothpastes and mouthwashes to use. Using a mouthwash and regularly brushing your teeth is a good way to reduce plague. There are certain other things you can do to reduce the incidence of plaque build up on your teeth. For instance, you can add sesame seeds in your diet and to take calcium supplements, both of which help lower plague…