Dental review; devoted to the advancement of dentistry. . manner (Fig. 1-B). This attachment, as its name implies, isstationary, being attached to the anchorage tooth by is particularly useful in making attachment to the molar teeth,as shown in Fig. 1-D. THE OPEN FACED SHELL CROWN OR SO CALLED SLIPPER ATTACHMENT. This attachment has been extensively used upon vital teeth asa means of anchorage in fixed bridge work, being most generallyapplied to the anterior teeth (Fig. 2-A). Like the band clasp, thisattachment has been so much abused that it is now looked upon bymost practition
Dental review; devoted to the advancement of dentistry. . manner (Fig. 1-B). This attachment, as its name implies, isstationary, being attached to the anchorage tooth by is particularly useful in making attachment to the molar teeth,as shown in Fig. 1-D. THE OPEN FACED SHELL CROWN OR SO CALLED SLIPPER ATTACHMENT. This attachment has been extensively used upon vital teeth asa means of anchorage in fixed bridge work, being most generallyapplied to the anterior teeth (Fig. 2-A). Like the band clasp, thisattachment has been so much abused that it is now looked upon bymost practitioners as ruinous and altogether unfit for use. Itsabuse has largely come about because of the comparative ease withwhich it can be constructed and applied, together with the fact ORIGINAL COMMUNICATIONS. 767 that although poorly adapted to the gingival surfaces it will, inmost instances, give rigid attachment for a time at least. This form of attachment besides being unsightly is, in mostcases, contradicted because of the necessarilv extensive destruction. 12 >—— . /L*|[ J [ of the incisaf or occlusal third of the tooth to secure close adapta-tion of the band to the gingival surfaces (Fig. 2-B). While theseattachments have, in many instances, given efficient service formany years, without apparent injury to either the tooth or adjacent 768 THE DENTAL REVIEW. tissues, they are, in most cases, injurious and destructive. Conse-quently, if used at all they should be limited to cases where theanchorage teeth are somewhat conical in form, which will permitof the gingival portion of the band being closely fitted to the toothsurfaces without extensive mutilation. When applied to the bicuspidteeth (Fig. 2-C) they are perhaps no more objectionable than thefull shell crown, but are generally about as unsightly. Fig. 3—The Three-quarter Gold Shell Crown. The gold shell crown, with its band extended beneath the freemargin of the gum, has been quite extensively u
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Keywords: ., bookcentury1900, bookdecade1910, bookpublis, booksubjectdentistry
