Manual of dental surgery and pathology . s with moderate force unable to penetrate the last added portions not being easily accomplished by thetape arrangement, it may be effected according to the plan whichwe shall next detail. If the above be carried into effect asdescribed, we shall then have a cavity filled with gold foil, inlayers parallel with each other, and held firmly by mutual com-pression, so that any dragging action on the surface will be re-sisted by the whole depth of the foil; whereas, were the paral-lelism of the folds reversed, the layer at the surface would besust
Manual of dental surgery and pathology . s with moderate force unable to penetrate the last added portions not being easily accomplished by thetape arrangement, it may be effected according to the plan whichwe shall next detail. If the above be carried into effect asdescribed, we shall then have a cavity filled with gold foil, inlayers parallel with each other, and held firmly by mutual com-pression, so that any dragging action on the surface will be re-sisted by the whole depth of the foil; whereas, were the paral-lelism of the folds reversed, the layer at the surface would besustained only by the narrow portion forming its first fold. Tiieprocess, how^ever, has yet to be completed, as at this stage thegold should project slightly above the orifice of the cavity. With instruments terminating in somewhat broad extremities,and file-cut, to prevent their slipping (Fig. 133), the surface iscondensed by considerable pressure, greatly augmented by aslight rolling movement being given to them at the same time. Fvr Hand mallet, the head of which is consti-uctcd of hard wood filled with lead, which lessensthe amount of vibration when used. Fiff. 1S5.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectdentist, bookyear1882
