 That film holds food substance which ferments and forms acids. It holds the acids in contact with the teeth to cause decay. Millions of germs breed in it. They, with tartar, are the chief cause of pyorrhea.  Life - Стр. 251923Полный просмотр - Подробнее о книге
 | 1922 - Страниц: 772
...absorbs stains, so the teeth look discolored. Film is the >asis of tartar. How it ruins teeth That film holds food substance which ferments and forms acids. It holds the acids n contact with the teeth to cause decay. Millions of germs breed in it. They, with artar, are the chief... | |
 | 1921 - Страниц: 882
...Film 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. Germs breed...They, with tartar, are the chief cause of pyorrhea. Also of internal troubles. Ways to combat it Dental science has now found two effective film combatants.... | |
 | 1921 - Страниц: 974
...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. Germs breed...They, with tartar, are the chief cause of pyorrhea. Now a new era Now dental science, after years of research, has found ways to fight film. Able authorities... | |
 | 1923 - Страниц: 1012
...teeth grow cloudy. Film also holds food substance which ferments and forms acid. It holds the acid in contact with the teeth to cause decay. Germs breed by millions in film. They cause many serious troubles, local and internal. Thus film is the teeth's chief enemy. Now... | |
 | 1922 - Страниц: 428
...dingy Film absorbs stains, making the teeth look dingy. Film is the basis of tartar. It holds AEG US food substance which ferments and forms acids. It...the acids in contact with the teeth to cause decay. Millions of germs breed in it. They, with tartar, are the chief cause of pyorrhea. Thus most tooth... | |
 | 1923 - Страниц: 1332
...polishing agent is far softer than enamel. Never use a film combatant which contains harsh grit. Film also holds food substance which ferments and forms acids....They, with tartar, are the chief cause of pyorrhea. Thus most tooth troubles, which few escape, are now traced to that film. Now we combat it Old methods... | |
 | 1922 - Страниц: 1142
...Keeps teeth dingy Film absorbs stains, making the teeth look dingy. Film is the basis of tartar. It holds food substance which ferments and forms acids....the acids in contact with the teeth to cause decay. Millions of germs breed in it. They, with tartar, are the chief cause of pyorrhea. Thus most tooth... | |
 | Walter Hines Page, Arthur Wilson Page - 1922 - Страниц: 824
...Keeps teeth dingy Film absorbs stains, making the teeth look dingy. Film is the basis of tartar. It holds food substance which ferments and forms acids....the acids in contact with the teeth to cause decay. Millions of germs breed in it. They, with tartar, are the chief cause of pyorrhea. Thus most tooth... | |
 | 1921 - Страниц: 764
...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. Germs breed...They, with tartar, are the chief cause of pyorrhea. Now a new era Now dental science, after years of research, has found ways to fight film. Able authorities... | |
 | 1921 - Страниц: 616
...Film 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. Germs breed...They, with tartar, are the chief cause of pyorrhea. Also of internal troubles. Ways to combat it Dental science has now found two effective film combatants.... | |
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