A practical treatise on artificial crown- and bridge-work . drilled and tapped and recessed, and the crown properly fittedand articulated, the screw is put through the crown, amalgampacked in the crown-groove and around the screw, which is theninserted in the root, and the crown pressed hard into its -crew is then turned into the position shown in Fig. 74,thus compressing the amalgam or cement in both recess andgroove, after which the screw-head may be covered with amal-gam, cement, or gold, as desired. Fig. 77. As a preferable mode, however, the screw-post may first befixed in the r
A practical treatise on artificial crown- and bridge-work . drilled and tapped and recessed, and the crown properly fittedand articulated, the screw is put through the crown, amalgampacked in the crown-groove and around the screw, which is theninserted in the root, and the crown pressed hard into its -crew is then turned into the position shown in Fig. 74,thus compressing the amalgam or cement in both recess andgroove, after which the screw-head may be covered with amal-gam, cement, or gold, as desired. Fig. 77. As a preferable mode, however, the screw-post may first befixed in the root, the crown adjusted over the post, amalgampacked on the root and around the post, the crown seated firmly,more amalgam packed in the crown cavity around the post, andthen a nut screwed on the post, as shown in Fig. 75. In all thesectional cuts cement, amalgam, or gutta-percha is to be under-stood as filling the cavities in the conjoined roots and crowns. 62 ARTIFICIAL CROWS- ASD BRIDGE-WORK. Fio. 78. Fig. 76 shows in contour a dovetailed crown mounted on asuperior molar root in the manner shown by Fig. 69. It isobvious that the crown of Fig. 69 might be ground quite downto the post-ends, and yet be firmly held by the dovetail sides ofthe central cavity. THE GATES CROWN. The Gates crown has become identified with the Bon will,owing to its similarity (Fig. 77). It is usually attached to theroot by a metallic screw manufactured for the purpose, suchas is illustrated in Fig. 78, instead of the The scr
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1889
