. The science and practice of dental surgery. cker (16). Devices for Refacing when an Ordinary Plate-toothhas been used in the Original Construction ofthe Crown Leon Williams Facing (Dental Manufactur-ing Comi)anys, see Fig. 748).—This device hasbeen made by Harry Rose for many years forhis own use, and also by Leon Williams. It is a flat tooth in all respects like an ordinaryplate-tooth, except that it has no pins; buthas instead of pins two undercut holes at the \ Fig. ^ I w ~ ? -Leon Williams Porcelain Facings. (Dental Manujacturing Co., Ltd.) back, where, in a plate-tooth, the pins w
. The science and practice of dental surgery. cker (16). Devices for Refacing when an Ordinary Plate-toothhas been used in the Original Construction ofthe Crown Leon Williams Facing (Dental Manufactur-ing Comi)anys, see Fig. 748).—This device hasbeen made by Harry Rose for many years forhis own use, and also by Leon Williams. It is a flat tooth in all respects like an ordinaryplate-tooth, except that it has no pins; buthas instead of pins two undercut holes at the \ Fig. ^ I w ~ ? -Leon Williams Porcelain Facings. (Dental Manujacturing Co., Ltd.) back, where, in a plate-tooth, the pins wouldbe. These holes are large enough for theheaded pins to enter. Technique.—When a facing is broken in themouth, remove all fragments of porcelain,but do not remove the pins. Select a LeonWilliams facing that will suit the case, andthat has the holes in similar positions to thepins of the broken facing. Fit the new facinginto place and cement it in. The Dental Manufacturing Company suppliespairs of facings, one with pins, and one with. Fig. 749.—Ashs Repair Facings.(Messrs. Claudius Asli, Sons & Co., Ltd.) holes, but otherwise exactly alike. The ideais, when making a crown, to procure a pair offacings, using at first the one with pins in theordinary way, and handing the one with holesto the patient to be kept in case of fracture ofthe first. Ashs Facing (see Fig. 749).—This is similarto the preceding, except that instead of havingtwo holes to accommodate the two pins, it hasan undercut transverse slot into which the pinsare received. This slot gives greater latitudein selection of a facing, owing to its being ableto accommodate puis of diverse widths apart. 592 Technique.—Same as the Facings (S. S. Whites, see Fig. 751)(19).—These can be used for replacing a crowii inside of the holes with a cross-cut the facing into place. Bryants Crown or Bridge .Repair Process (see
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
