. The Dental cosmos. be seen that one rootis missing. Proceeding, then, with the subject ofanchorage, Fig. 142 shows an upperbridge suitable for a case in which boththe bicuspids and first molar are miss-ing, and the second molar so badlybroken down that it requires canine is here utilized for the an-terior anchorage, the pulp being devital-ized for the purpose, and a post fitted tothe canal, on to which an inlay is formedto fill the cavity. To this a post is ex-tended horizontally backward the fulllength of the porcelain bridge. The pos-terior anchorage is obtained by solderinga
. The Dental cosmos. be seen that one rootis missing. Proceeding, then, with the subject ofanchorage, Fig. 142 shows an upperbridge suitable for a case in which boththe bicuspids and first molar are miss-ing, and the second molar so badlybroken down that it requires canine is here utilized for the an-terior anchorage, the pulp being devital-ized for the purpose, and a post fitted tothe canal, on to which an inlay is formedto fill the cavity. To this a post is ex-tended horizontally backward the fulllength of the porcelain bridge. The pos-terior anchorage is obtained by solderinga vertical post in the center of the molarcap, its exact position and directionbeing got by first drilling a tube throughthe porcelain in the manner before Shows shell crowns. replacement of a pair of detached- orfixed-post crowns, the renewal of whichfrom some or any cause may necessitatethis, and where it is undesirable to at-tempt removal of the existing anchor-ages. Thus, for instance, it may be Fig. 141. Fig. Canine porcelain shell crown with lateral in-cisor extension. employed for the replacement of twoRichmond crowns, by grinding off themetal backings and leaving the postsstanding sufficiently high to afford thenecessary anchorage, or for joining to-gether two loose roots. A further ex-
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Keywords: ., bookcentury1900, bookdecade1910, bookiddent, booksubjectdentistry
