Internal Prosthetic Manual - BioHorizons

RESTORATIVE OPTIONSAbutment-level Screw-retained RestorationsAbutment-level, screw-retained restorations are used for a bar-retained and/or supportedoverdenture case when the treatment plan indicates the cast bar be 1-2mm supra-gingival. Thedenture is retained by the bar with attachments, i.e. clips or ball attachments. Typically, four to siximplants are recommended in the mandible for an implant-supported/implant-retained prosthesis.Six to ten implants are recommended in the maxilla for an implant-supported/implant-retainedprosthesis. An implant-retained, tissue-supported prosthesis is indicated when there are fewer thanfour implants in the mandible and fewer than six in the maxilla.Indications• Multiple-unit restorations• Abutment-level bar overdenture• Fixed-detachable (hybrid type) restorations• Extensive bone loss• Thick tissueLimitations• Limited inter-arch space to accommodate abutments, barand overdentureAdvantages• Bar overdenture removable by patient for hygiene• Fixed-detachable removable by dentist for hygieneshop online at www.biohorizons.com8