. The science and practice of dental surgery. @@®(o)(o)(o)(o) Fig. 734.—DiamondReamers, for fit-ting porcelain fac-ings to Btittnercaps. (Messrs. ClaudiusAsh, Sons - l . J & Ill:. ,.:;:_;. I Hittnn ( Mh\ h m-l (Messrs. Claudius Ash, Sons da Co., Ltd.) over that. To the model thus obtained, makea restitution of the original contour of theroot outside the cap where necessary with cast gold, so that the \\ork may be finishedflush with the root. The lingual contouringwith gold and the attachment of theporcelain face can all be made byone and the same operation ofcasting.
. The science and practice of dental surgery. @@®(o)(o)(o)(o) Fig. 734.—DiamondReamers, for fit-ting porcelain fac-ings to Btittnercaps. (Messrs. ClaudiusAsh, Sons - l . J & Ill:. ,.:;:_;. I Hittnn ( Mh\ h m-l (Messrs. Claudius Ash, Sons da Co., Ltd.) over that. To the model thus obtained, makea restitution of the original contour of theroot outside the cap where necessary with cast gold, so that the \\ork may be finishedflush with the root. The lingual contouringwith gold and the attachment of theporcelain face can all be made byone and the same operation ofcasting. J. Leon Williams Modification ofthe Buttner System (see Fig. 735).J. Leon Williams has desired toretain the advantages of the Biittnersystem of a readymade circular capand root cutmechanically tofit it, and at thesame time to eli-minate the disad-vantages of thewant of circular-ity of the root-face, by sinkingthe cap well with-in the edges ofthe root, andcombining it witha thin diaphragmover the whole root-face. He has also provided ataper j)in and a taper principles are all good, butas supplied the pin is toothin, too abruptly tapered,too sharply pointed, andaltoge
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
