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CAD/CAM - international magazine of digital dentistry

| case report abutment fracture 16 CAD/CAM 2 2016 extracted. The maxillary denture was inserted and a bite registration in central occlusion was performed using self-curing acrylic resin (PATTERN RESIN; GC, Alsip, USA). An impression (Impregum; 3M ESPE, Neuss, Germany) of the maxilla was taken with the denture in place. The denture was removed from the patient’s mouth together with the impression (Fig.3a).Thisallowedforthefabricationofacastwith an exact duplication of the abutments (Fig. 3b). Thecastswereplacedinanarticulatorusingtheden- ture as a guide to achieve correct occlusion (Fig. 4a). A temporary fixed partial denture (from #14 to #24 with #15 and #25 candilevers) from coloured poly- methyl methacrylate (PMMA; Zenotec; Wieland, Pforzheim, Germany) was milled based on a scan of the maxilla cast, and was adhered on the abutments usingprovisionalcement(TempBond,KerrCo.,Orange, USA; Fig. 4b). In addition, a surgical stent fitting onto theabutmentswasmilledfromclearPMMA(Zenotec; Wieland, Pforzheim, Germany; Fig. 5a). The planned axis of implant #13 was determined using a dental parallelometer (Fig. 5b), and a drill sleeve was placed into the surgical stent (Fig. 5c). An implant (4.5 × 10 mm, SB line; Dentegris, Duisburg, Germany) was inserted with a torque of 35 Ncm using a two-phase Figs. 2a–d: Restauration after initial treatment, before the accident; a) anterior view; b) intraoral view; c) implants with abutments and teeth #13 and #23 with gold copings in place; d) panoramic radiograph. Figs. 3a & b: a) Impression with the maxillary restoration; b) fabricated cast. Figs. 4a & b: a) Cast articulated using the maxilla restoration as a guide; b) provisional FPD in place. Fig. 2a Fig. 2b Fig. 2c Fig. 2d Fig. 3a Fig. 3b Fig. 4a Fig. 4b 22016

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