 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 by millions in it They, with tartar, are the chief cause of pyorrhea.  Life1924Visualização integral - Acerca deste livro
 | 1924 - 704 páginas
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 | 1921 - 750 páginas
...dimmed and ruined by it. Film absorbs stains, making the teeth look dingy. It is the basis of tartar. It holds food substance which ferments and forms acid....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 - 882 páginas
...film effectively. Film absorbs stains, making the teeth look dingy. Film is the basis of tartar. It holds food substance which ferments and forms acid....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 - 974 páginas
...dimmed and ruined by it. Film absorbs stains, making the teeth look dingy. It is the basis of tartar. It holds food substance which ferments and forms acid....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... | |
 | 1924 - 908 páginas
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 | 1924 - 496 páginas
...much of it clings and stays. Soon it discolors and forms dingy coats, then teeth lose their luster. Film also holds food substance which ferments and...They, with tartar, are the chief cause of pyorrhea. Film is the teeth's great enemy, so dental science long sought ways to fight it. Two ways were found,... | |
 | 1922 - 398 páginas
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 | 1922 - 864 páginas
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 | 1923 - 1332 páginas
...discolor it. If not removed, it forms dingy coats. Tartar is based on film. And few things do more to mar beauty. Film also holds food substance which ferments...They, with tartar, are the chief cause of pyorrhea. Thus most tooth troubles are now traced to film. Very few escaped Research found two ways to fight... | |
 | 1922 - 1142 páginas
...enters crevices and stays. That is what discolors — not the teeth. Film is the basis of tartar. 1 1 holds food substance which ferments and forms acid....They, with tartar, are the chief cause of pyorrhea. Ways to end it Dental science has in late years found two ways to fight film. It has proved them by... | |
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