CAD/CAM international magazine of digital dentistry No. 3, 2016

fixed and removable implant restorations ce article | 29 CAD/CAM 3 2016 Thentheprovisionalimplantprosthesiswasscrewed into place, and its teeth positioning, function and aestheticswereverified(Figs.21a&21b).Withboth appliances in place, the interocclusal relationship was checked (Figs. 22a & b). Minor occlusal ad- justments were made directly to the maxillary provisional implant prosthesis, as PMMA is easily modified. Slight alterations were also made to the lower implant overdenture. Then, blockout shims and the retentive overdenture caps were seated over the Locator attachments (Figs. 23a & b). Quick Up self-cure material (VOCO America) was added to the recess wells of the overdenture before seating the appliance over the metal housings. After letting the material set for approximately three minutes, the overdenture was removed, pick- ingupthedenturecapsintheprosthesis.Theminor voidssurroundingthedenturecapswerethenfilled with Quick Up light-cured pink composite (Fig. 24). Fig. 18a Fig. 18b Fig. 19a Fig. 19b Fig. 17a Fig. 17b Fig. 17c Figs. 16a–c: The upper and lower wax setups were tried in to evaluate fit, aesthetics, occlusion and function per standard denture technique. Figs. 17a–c: The individual sections of the implant verification jig were seated and luted together before being picked up in the open-tray final impression, which was made using a custom tray and Capture VPS material (Glidewell Direct). Figs. 18a & b: The final lower implant overdenture was designed to seat over Locator attachment analogues situated in the mandibular cast. This would allow the overdenture caps that engage the Locator attachments to be picked up chairside. Figs. 19a & b: Dental CAD software was used to design the definitive prosthesis for the patient’s maxilla based on the final impression and approved wax setup. Screw access holes were created in the precise positions needed for a passive fit. Fig. 16a Fig. 16b Fig. 16c 32016

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