Thursday, November 23rd 2017 2:08AM EST

Replacement of an O-ring Mandibular Overdenture with a Telescopic TRINIA®-HC Prosthesis Utilizing Gothic Arch Occlusal Registration Tracing

Posted on by Bicon

This case demonstrates the clinical and laboratory procedures and techniques to replace a 10-year-old o-ring mandibular overdenture on three O-Ring Abutments with a telescopic prosthesis of TRINIA® and Shofu disc HC, CAD/CAM material, with three milled retentive copings on Universal Abutments in two clinical visits for a 75-year-old woman.

During the first clinical visit, the three O-Ring Abutments were removed from their implants, and three 2.0mm impression posts and corresponding acrylic sleeves were inserted for the making of a full arch implant-level transfer impression. An initial centric occlusal registration was recorded using modified acrylic impression sleeves at the patient’s existing vertical dimension of occlusion with the bite registration material, Capture. While the patient waited, the impressions were poured and the stone models articulated for the fabrication of a maxillary stylus and mandibular tracing plate to facilitate the registration of the patient’s centric relation utilizing the Gothic arch occlusal registration tracing. After recording the patient’s centric relation, the O-Ring Abutments were re-inserted, and the occlusal registration was sent to the dental technician for the fabrication of a telescopic TRINIA® substructure to which three separately milled teeth arrangements of Shofu disc HC material were bonded.

During the second clinical visit, the O-Ring Abutments were removed, and three Universal Abutments were inserted into the implants utilizing a light-cured resin orientation/seating jig, prior to the cementation of three milled retentive copings into the bores of the TRINIA®-HC prosthesis.

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