File:The Dental cosmos (1907) (14781170355).jpg

Identifier: dentalcosmos4919whit (find matches)
Title: The Dental cosmos
Year: 1907 (1900s)
Authors: White, J. D McQuillen, J. H. (John Hugh), 1826-1879 Ziegler, George Jacob, 1821-1895 White, James William, 1826-1891 Kirk, Edward C. (Edward Cameron), 1856-1933 Anthony, L. Pierce (Lovick Pierce), b. 1877
Subjects: Dentistry Dentistry
Publisher: Philadelphia, S. S. White Dental Manufacturing Co
Contributing Library: Yale University, Cushing/Whitney Medical Library
Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

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ay, may pre-serve a high polish, and it may even es-cape the notice of the dental practitionerthat the plate of enamel is gradually be-coming thinner. I have had dentists say—I have been using a gritty tooth-pow-der for ten or twenty years, and I haveno wasting; yet a careful examina-tion with a magnifying glass has shown MILLER.—EXPERIMENTS AND OBSERVATIONS, ETC. L3 the worn surface readily recognizable byanyone who has made a study of this sub-ject, and looking at the tooth from thecutting edge we may find the plate ofenamel as thin as paper. As a matterof fact we seldom notice that the enamelis wearing away until the whole plate isbroken through and the dentin exposed. brush them. One patient, suffering fromabrasion, told me that he often spent asmuch as five minutes over his teeth;and one lady assured me that she devotedone hour daily to the care of her teeth—a rather strong exaggeration, no doubt.Others perform the whole operation in-side of fifteen seconds. Some charge the
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A case recently came to my notice inwhich a young lady, who is very proud ofher white teeth, had, by a vigorous use ofChinese tooth-powder consisting chieflyof pumice, very perceptibly worn downthe enamel of her front teeth, inside ofthree years. It must also be borne in mind thatthere is a vast difference in the manner inwhich different people brush their teeth.In fact, there are about as many ways ofbrushing the teeth as there are people to brush with a great quantity of powder,others only dip the tip end into it. othersagain use powder only occasionally, andmany not at all. Some run the* brushhorizontally along the necks of the teeth,some diagonally from the cutting edgeof the incisors across to the neck of thefirst molar. The manner of holding thebrush and the shape of the teeth are alsofactors of importance; likewise the in-clination of the teeth to each other and tothe alveolar process—as has been pointed 14 THE DENTAL COSMOS. out by S. P. Mummery. The only pro-nounced case of

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