National Geographic : 1921 May
A new dental era You Can't Escape Tooth troubles if you leave a film You should try this new method of teeth cleaning. Try it ten days without cost. It combats the film which dims the teeth and causes most tooth troubles. See and feel the results. To millions they are bringing cleaner, safer, whiter teeth. The Tooth wrecker Film is the great tooth wrecker. A viscous film clings to the teeth, enters crevices and stays. The ordinary tooth paste does not end it. Old ways of brushing leave much of it intact. And very few people have escaped the troubles which it causes. It is the film-coat that dis colors, not the teeth. Film is the basis of tartar. It holds food substance which fer ments 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-a dis ease now alarmingly common. Dental science has now found ways to combat that film. The methods have been amply proved by years of careful tests. Now millions employ them. Leading den tists everywhere advise them. The methods are combined in a dentifrice called Pepso dent. And, to let all know how much it means, a ten day tube is being sent to all who ask. Five desired effects Pepsodent brings five de sired effects. It combats the teeth's great enemies as noth ing has done before. One ingredient is pepsin. Another multiplies the starch digestant in the saliva, to di gest starch deposits that cling. The saliva's alkalinity is mul tiplied also. That to neutral ize the acids which cause tooth decay. Two factors directly attack the film. One of them keeps teeth so highly polished that film cannot easily adhere. Every application repeats these results. Send the coupon for the io Day Tube. Note how clean the teeth feel after using. Mark the absence of the vis cous film. See how teeth whiten as the film-coat dis appears. What you see and feel will be a revelation, and the book we send will explain how each effect is natural and neces sary. It is important that you know this. Cut out the cou pon now. Pepsc cI PA T OFt REG.U. 5 . The New-Day Dentifrice A scientific film combatant combined with two other modern requisites. Now advised by leading dentists everywhere and supplied by all druggists in large tubes. I 10-Day Tube Free THE PEPSODENT COMPANY, Dept. 644, 1104 S. Wabash Ave., Chicago, 11.: Mail 10-Day Tube of Pepsodent to Only one tube to a family "Mention The Geographic-It identifies you"