. The teeth in health and disease . , make a white paste which sets hardin a few minutes and retains its colour in themouth. These stoppings are sufficiently hardto resist the wear of mastication, but the salivahas a slightly solvent action upon them and theyrequire renewing every two or three percha stoppings are chiefly used fortemporary stopping, etc., but is fairly durablein some cases, as in small cavities near the gummargin, etc. Griitta percha, as used in dentistry, is preparedby the addition of a hydraulic cement which causesit to set hard in the mouth and is quite distinct
. The teeth in health and disease . , make a white paste which sets hardin a few minutes and retains its colour in themouth. These stoppings are sufficiently hardto resist the wear of mastication, but the salivahas a slightly solvent action upon them and theyrequire renewing every two or three percha stoppings are chiefly used fortemporary stopping, etc., but is fairly durablein some cases, as in small cavities near the gummargin, etc. Griitta percha, as used in dentistry, is preparedby the addition of a hydraulic cement which causesit to set hard in the mouth and is quite distinctfrom the so-called white enamel sold at thedrug stores. This white enamel, which isonly ordinary white gutta percha, becomes in-describably offensive in the mouth and pollutesthe breath terribly and, if introduced in a cavity STOPPING OR FILLING 95 batween the teeth, frequently by its expansivepower forces the teeth apart, causing them toassume most unsightly positions, and possiblytheir loss by driving the gums back from Fig. 47.—Showing two central teeth driven apart and therest of the teeth disjriaced by amateur stopping with ordinarywhite gutta percha. What are known as mineral or porcelaininlays also make very artistic stoppings. Thelost portion of the natural tooth is replaced bya small section of mineral tooth accuratelyfitted and cemented in the cavity. The mineral inlay is natural looking, and theleast easily detected of all stoppings, and isespecially suitable for small cavities in frontteeth. Patients are of course not ordinarily quali-fied to judge of the relative merits of the variousmaterials and methods, nor of their specialapplicability in individual cases, and cannot dootherwise than to select a qualified dentist, andsubmit to his judgment—very certain to bebetter than their own—and, having done so, togive him all the help in their power to secure 96 THE TEETH the good results desired by both. Good opera-tions of any and all classes fail often
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1902
