. The principles and practice of dental surgery. FILING TEETH. 263 upper, in consequence of the handle being on a line with thefile, works more easily than the lower one. A great variety of V shaped separating files are now to befound in the dental depots, from English, French, and Americanmanufacturers. Fig. 79 will give a correct idea of some ofthese shapes. Fig. 80 represents a very useful file-carrier invented by Westcott: c is a spring, and through the arms a and 6, Fig. there are square mortices to receive the ends of the file and tokeep it from turning. The arm h comes ofi at
. The principles and practice of dental surgery. FILING TEETH. 263 upper, in consequence of the handle being on a line with thefile, works more easily than the lower one. A great variety of V shaped separating files are now to befound in the dental depots, from English, French, and Americanmanufacturers. Fig. 79 will give a correct idea of some ofthese shapes. Fig. 80 represents a very useful file-carrier invented by Westcott: c is a spring, and through the arms a and 6, Fig. there are square mortices to receive the ends of the file and tokeep it from turning. The arm h comes ofi at an obtuse file is prepared by making each end square, correspondingwith the size of the mortices in the arms, and is adjusted to thecarrier by first putting one end of the file into the arm a, andpressing down the other end into the mortice h ; the spring, con-stituting that portion of the instrument between the arms, yieldssufficiently to admit of this. It is so constructed that the handleis brought on a line Avith the file—consequently two are required,one for each side of the mouth. Fig. 81.
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisherphiladelphialindsa
