A practical treatise on mechanical dentistry . ld (Fig. 360). 500 MECHANICAL DENTISTRY. Dr. Bomvills plan is to cap the tooth with a platinum or goldcap having a slot, into which the pin passes as it is slipped on theroot (Fig. 361). The crown is then secured with amalgam in theusual way. Dr. Sidney S. Stowells method is as follows: Make a closedcap, using the combination crown metal, and place it upon the cap is then perforated and the root reamed for the bite in wax is now taken, after which the cap is burnished intothe countersunk end of the root (Fig. 363). The dowels o
A practical treatise on mechanical dentistry . ld (Fig. 360). 500 MECHANICAL DENTISTRY. Dr. Bomvills plan is to cap the tooth with a platinum or goldcap having a slot, into which the pin passes as it is slipped on theroot (Fig. 361). The crown is then secured with amalgam in theusual way. Dr. Sidney S. Stowells method is as follows: Make a closedcap, using the combination crown metal, and place it upon the cap is then perforated and the root reamed for the bite in wax is now taken, after which the cap is burnished intothe countersunk end of the root (Fig. 363). The dowels of plati-num and iridium wire are now set in their places, being allowed toproject ]/\ of an inch so that they may adhere to the impressionof plaster which is then taken. From this a cast is made of invest-ing material; calcined marble-dust and plaster is preferable, thoughfine molding sand will do. The dowels are now cut off even withthe top of the cap (Fig. 364). Fig. 362. Fig. 363. Fig. 364. Fig. 365. Fig. 366. Fig. 367. Fig. 368. Fig. The tooth to be used may be a Logan or Brown crown, or acommon countersunk tooth. As the case in question is a bicuspid,we have selected for it a Logan crown. First, cut off the pin, andthen the tooth is ground into position on the cap; grinding thestump of the pin and porcelain alike evenly and smoothly. Thestump of the pin is now ground with a small wheel below the sur-face of the porcelain (Fig. 365). The tooth is invested (Fig. 366),and pure gold fused on to the platinum pin, and while in a fluid stateit is, with a wax spatula, spatted down flat (Fig. 367). The gold isfiled or ground down even with the porcelain, and at the palatal bor-der the tooth is ground to bevel back until the gold is reached ( The tooth is now fastened in place on the cap with waxcement (Fig. 369), the cast cut away, and the case invested inasbestos and plaster (Fig. 370). This is used because of the fiberof the asbestos, which prevents the separation o
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1903
