National Geographic : 1919 Apr
You'll Not Clean Teeth In Old Ways When You Once Try This All Statements Approved by High Dental Authorities We Must End Film Authorities know that the cause of most tooth troubles is a slimy film. You can feel it with your tongue. And old methods of teeth cleaning don't end it. That's why brushed teeth discolor and de cay, why tartar forms and pyorrhea starts. Statistics show that tooth troubles have constantly increased. That film is what discolors. It forms 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. Millions of germs breed in it. They, with tartar, are the chief cause of pyorrhea. This clinging film gets into crevices, hardens and stays. The ordinary dentifrice does not dissolve it. So millions of teeth are being constantly wrecked by it. Now dental science has found a way to combat it. Able authorities have proved this by convincing clinical tests. Leading dentists everywhere are urging its adoption. So the method has been embodied in a dentifrice called Pepsodent. And we are offering free a ten-day test to every one who asks. Let Results Decide Do what dentists have done. Use it and watch it, then let your own teeth decide. Pepsodent is based on pepsin, the digest ant of albumin. The film is albuminous matter. The object of Pepsodent is to dis solve it, then to constantly combat it. :: Pepsin must be activated, and the usual method is an acid harmful to the teeth. So pepsin long seemed impossible. But dental science has now found a harmless activating method. Five governments have already granted patents. Authorities believe that this new method means a dental revpoution. Send this coupon for a io-Day Tube: Use 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. These results are immensely important. They mean the defeat of the teeth's greatest enemy. Prove them for your own sake and your children's sake. Cut out the coupon now. PAT. OFF. F 1 Pe d 10-Day Tube Free REG. .. PI THE PEPSODENT CO. Dept. 484. 1104 S. Wabash Ave., The New-Day Dentifrice Chicago. Il.: Mail 10-Day Tube of Pepsodent to A Scientific Product-Sold by N e, ....-----------........... ......-..-.. --- Druggists Everywhere Address..-.-- ------------ ---------------- 1111111111111111111111111111111111111111 llll ll lll l lllll llllllllllll llllllllll lllll1llllllllI 1111111111 11111 "Mention The Geographic-It identifies you"