A practical treatise on artificial crown- and bridge-work . celain tips ; B, the space to be filled by them ; C and D, the open-ings for retaining-pins; F and G, openings in the base-plates (E)for the pins. Fig. 282 shcnvs the appliance with pins 283 and 284 illustrate a case in which the contour of asingle incisor tooth was restored in this manner. Fig. 283 showsthe palatal aspect of the tooth, p,o. 288. Fio. 284. in which the openings for tworetaining-pins were drilled, theopenings l)eing made quite. small. In Fig. 284 is seen the porcelain tip attached to the plate and ready
A practical treatise on artificial crown- and bridge-work . celain tips ; B, the space to be filled by them ; C and D, the open-ings for retaining-pins; F and G, openings in the base-plates (E)for the pins. Fig. 282 shcnvs the appliance with pins 283 and 284 illustrate a case in which the contour of asingle incisor tooth was restored in this manner. Fig. 283 showsthe palatal aspect of the tooth, p,o. 288. Fio. 284. in which the openings for tworetaining-pins were drilled, theopenings l)eing made quite. small. In Fig. 284 is seen the porcelain tip attached to the plate and ready for mounting. The two retaining-pins will be observed soldered to the plate. In this case the cervical margin of the natural tooth was made level to aiFord a secure resting-place for the porcelain tip. The appliance has been in use for several months. Dr. C. II. Land, of Detroit, employs porcelain partial crown-Avork in cases of the character here described. He first fi)rnis 140 ARTIFICIAL CROWN- AND BRIDGE-WORK. a dovetail cavity in the central ])ortion of the section to betipped or contoured, and then adapts, aided by frequent an-nealing, a piece of platinum foil (No. 60 U. S. gauge) tothe cavity and surface of the part, by means of burnishers,and a pellet of cotton twisted on the end of an platinum is then removed, and on its surface porcelain bodyis placed, and baked in the muttle of a furnace. (Dr. LandsFig. 285. Midget Furnace, Fig. 285, is the most suitable for the purpose,,as each bakin
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
