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J Esthet Restor Dent. 2013 Apr;25(2):103-7. doi: 10.1111/jerd.12007. Epub 2012 Nov 15.

Abutment emergence modification for immediate implant provisional restorations.

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  • 1Division of Restorative Dentistry, University of California-Los Angeles School of Dentistry, Los Angeles, CA 90095-1668, USA. tschoenbaum@dentistry.ucla.edu

Abstract

In their stock form, some titanium provisional implant abutments are not ideally designed for use in immediate placement/immediate provisional restoration treatment. This is largely due to the apical flare design that applies excessive pressure to the peri-implant soft tissue complex and crestal bone. This appears to have the undesirable effect of increasing peri-implant bone resorption and severely impeding the potential for increases in gingival volume. This type of stock titanium abutment will therefore benefit significantly from recontouring. The subgingival portion of the abutment is recontoured from the flared stock shape to a straight or parallel design. This modification minimizes pressure on the surgical site and provides additional space around the subgingival portion of the provisional restoration, within which the gingiva has the potential to remodel and fill. This allows the potential formation of additional peri-implant gingival volume and a coronal maintenance or migration of the soft tissue complex. In order to minimize the "graying effect" of titanium abutments, the retentive portion is opaqued by the technician or clinician. These modifications will improve the potential outcomes for both the peri-implant gingiva and the provisional restoration.

CLINICAL SIGNIFICANCE:

Narrowing the emergence profile of implant abutments for use in immediate implant provisional restorations appears to allow for creation of greater peri-implant volume. Thus resulting in increased esthetic potential and predictability of the peri-implant gingiva.

© 2012 Wiley Periodicals, Inc.

PMID:
23617383
[PubMed - indexed for MEDLINE]
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