. The science and practice of dental surgery. iculate the wax to the a sprue to some part of this andpressure-cast it either m Solbrigs pliers or one of the numerous machines devised for pressure-casting. In this way the top is cast direct onto the band, and it can be managed at the sametime to thicken the band onthe outside to any desiredextent and to improve thelateral contours by addedgold. J. E. Dunwoody, PhUa-delj)liia (10), recommendsmakmg the occlusal portionin the following way : Afterthe band is made, j)ut it onthe tooth. Place in it asmall amount of modellingcomposit
. The science and practice of dental surgery. iculate the wax to the a sprue to some part of this andpressure-cast it either m Solbrigs pliers or one of the numerous machines devised for pressure-casting. In this way the top is cast direct onto the band, and it can be managed at the sametime to thicken the band onthe outside to any desiredextent and to improve thelateral contours by addedgold. J. E. Dunwoody, PhUa-delj)liia (10), recommendsmakmg the occlusal portionin the following way : Afterthe band is made, j)ut it onthe tooth. Place in it asmall amount of modellingcomposition. Let the patientclose the teeth upon it. Re-move band and separate thecomposition from the the composition to fitthe opposing teeth and to fitthe band. Remove all com-position from uaside. Lay thecomposition flat down on aglass slab. Pour over it two-thirds of plaster of Paris andone-third of medium marbledust. Lito the mould thusmade, melt gold without borax and producepressure on it with a piece of charcoal to force ^^ Ltd.). (3) (4) Fig. 702.—(1) Band filled with investing material, withtinfoil inserted between the investing material andthe counterpart. (2) The band with masticatingsurface in wax, and sprue-wire attached with stickywax. (3) The band with the masticating surfacein wax is shown placed upon the cone and sur-rounded by the cylinder. (4) Section of the cyUnderfilled with embedding material, with the cone andthe metal point removed, (a) Plaster of Paris;(6) Tinfoil; (c) Investing material; {d) Wax; (e)Sticky wax ; (/) Sprue-wire ; (</) Gold. it into every interstice. The result will be a per-fect reproduction of the modelling composition, 56y and will fit the band and the bite this top to the band. Finishing the Crown.—Mount the crowii on astick of wood covered with shellac and let theshellac entirely fiU the crown. This will preservethe shape of the crown. Now fiJe up, glass-paper and polish the crowai, takuig great carenot
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
