A technique for immediately restoring single dental implants with a CAD-CAM implant-supported crown milled from a poly(methyl methacrylate) block
Available online 8 July 2017
Abstract
This
technique is used when a single dental implant is placed. A stent made
of autopolymerized acrylic resin was used to transfer the implant
position to the laboratory. Once the implant position was transferred,
the stone cast was scanned, and a computer-aided design and
computer-aided manufacturing (CAD-CAM) interim implant-supported crown
was milled from a poly(methyl methacrylate) (PMMA) block. A titanium
insert, in contact with the implant platform and not the PMMA material,
was used to support the crown. The interim prosthesis was then placed
intraorally. The soft tissues were sutured, and the interim prosthesis
was left for a period of at least 3 months to confirm osseointegration
and allow the soft tissue to heal. A CAD-CAM titanium impression coping
was made and used for the definitive impression. The contours of the
impression coping were identical to the contours of the interim
restoration. The data of the digital design of the interim prosthesis
were saved, and the definitive prosthesis was fabricated with contours
identical to those of the interim prosthesis.
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