Considerations for fabrication of implant-supported posterior restorations

Gerard Jules Chiche, Alain Pinault

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Implant-supported posterior restorations must be fabricated following establisbed prosthodontic principles. The need for screw-retained abutments and the narrow diameter of root-form implants dictate additional treatment protocols that fall beyond the scope of conventional prosthodontics. Cemented restorations offer simplicity and good control of morphology, but can only be considered if removal or no reservicing of the restoration is anticipated. Screw-retained restorations allow for reservicing or remediation but necessitate centering of the retaining screw within the occlusal anatomy. When the implant is misaligned, axis problems are solved with preangled copings, custom copings, or double frameworks. The diameter of root-form implants is significantly smaller than posterior natural teeth, and the emergence of the restorations must be progressively flared to achieve proper morphology. Limited interocclusal space and implant placement may dictate restoring posterior teeth as premolars, selecting a short abutment or a nonsegmented ("UCLA") abutment, or overlapping the crowns over the soft tissues. The final abutment selection is best assisted with a diagnostic waxing and with provisional restorations anticipating the completed treatment.

Original languageEnglish (US)
Pages (from-to)37-44
Number of pages8
JournalInternational Journal of Prosthodontics
Volume4
Issue number1
StatePublished - Jan 1 1991

ASJC Scopus subject areas

  • Oral Surgery

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