National Geographic : 1919 May
Watch Teeth Whiten As the Film Disappears All Statements Approved by High Dental Authorities Millions of germs tartar, are the chief most tooth troubles film. You Must Awake People must awake, as dentists have done, to this all-important fact. Old methods of teeth cleaning are sadly inadequate. Teeth still discolor, still decay. Tartar forms and pyorrhea starts. Statistics show that tooth troubles have constantly increased. Dental science finds the reason in a slimy film. You can feel it with your tongue. It clings to teeth, gets into crevices, hardeis and stays. The ordinary dentifrice cannot dissolve it. That film is what discolors - not the teeth. It is the basis of tartar. It holds food substance which ferments and forms acid. It holds the acid in contact with the teeth to cause decay. breed in it. They, with cause of pyorrhea. So are now traced to that Since this became known, science has sought ways to combat film. And now the way is found. Able authorities have proved it by many clinical tests. Leading dentists everywhere are urging its adoption. The way has been embodied in a denti frice called Pepsodent. And to hasten bet ter tooth protection we are offering every one a io-day tube to try. Prove It Yourself No argument is necessary if you will use this test tube and let Pepsodent prove itself. Pepsodent is based on pepsin, the diges tant of albumin:- The film is albuminous matter. The object of Pepsodent is to dis solve it, then to constantly combat it. But pepsin must be activated, and the usual method is an acid, harmful to the teeth. So pepsin long seemed impossible. But science now has found a harmless acti vating method. Five governments have already granted patents. That discovery means that we have conquered the teeth's chief enemy - the film. Send this coupon for a io-Day Tube. Use it like any tooth paste. Note how clean the teeth feel after using. Mark the absence of the slimy film. See how teeth whiten as the fixed film disappears. Watch it ten days and you will know that really clean teeth are possible. That is something you should know at once. Cut out the coupon now. P . s en ! 10-Day Tube Free REG. U.5. I THE PEPSODENT CO. The New-Day Dentifrice Dept. 491, 1104 S. Wabash Ave., Chicago, Ill. Mail 10-Day Tube of Pepsodent to A Scientific Product- I I Name ----------------- . Sold by Druggists Everywhere (165) I Address ------ , UIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII11111111111111 1 1 lllllllllllll IIIi lll IIIIlllllllllllfilllllllll IIIIIIIIIIIIlll "Mention The Geographic-It identifies you"