National Geographic : 1920 Jan
Dental Facts Which Everyone Should Know All Statements Approved by High DentalAuthorities Film is What Ruins Teeth The cause of most tooth troubles is a slimy film. It is ever-present, ever-forming. You can feel it with your tongue. That 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. Millions of germs breed in it. They, with tartar, are the chief cause of pyorrhea. Brushing Doesn't End It That film is clinging. It enters crevices and stays. Ordi nary brushing methods leave much of it intact. Month after month the film remains and may do a ceaseless damage. That is why so many brushed teeth discolor and decay. Dentists long have realized that ordinary cleaning methods were inadequate. They have sought a film combatant. Now, after years of research, science has supplied it. Able authorities have amply proved its efficiency. Lead ing dentists everywhere are urging its adoption. And now, millions of teeth are daily cleaned in this effective way. A Trial Tube to Everyone For home use this method is embodied in a dentifrice called Pepsodent. And, to show its results, a trial tube is sent to all who ask. Pepsodent is based on pepsin, the digestant of albumin. The film is albuminous matter. The object of Pepsodent is to dissolve it, then to day by day combat it. But this logical method long seemed impossible. Pepsin must be activated, and the usual agent is an acid harmful to the teeth. Now science has discovered a harmless acti vating method. And now active pepsin can be constantly applied. The results are quickly told by a test. We urge you to make it, and the book we send will tell the reason for them. RE G.U.S. The New-Day Dentifrice A scientific tooth paste which leading dentists all over America now urge for daily use See the Effects in Ten Days Send the coupon for a 10-Day Tube. Then note how clean the teeth feel after using. Mark the absence of the slimy film. See how teeth whiten as the fixed film disappears. Compare the results with your old methods. Then let your own teeth decide the method best for you and yours. Cut out the coupon now. 289 Ten-Day Tube Free THE PEPSODENT COMPANY, Dept. 904, 1104 S. Wabash Ave., Chicago, Ill. Mail 10-Day Tube of Pepsodent to Name Address ------------------.-.... __________ "Mention The Geographic-It identifies you"