CONELOG® Implant System Prosthetic Restorations - Camlog

DOUBLE CROWN RESTORATION WITH THE
CONELOG ® GOLD-PLASTIC ABUTMENT
INTRODUCTION
CONELOG ® gold-plastic abutments can be used to fabricate a double crown
restoration. The rotational stability of the CONELOG ® implant abutment
connection and high precision manufacturing make the CONELOG ® abutments
(including universal and telescope abutments) well-suited for fabrication
of double crown restorations.
Two different methods are used for fabricating the secondary copings:
• Electroformed secondary copings.
• Cast secondary copings similar to the double crown technique.
For removable superstructures of this type, we recommend inserting at
least 6 implants in the maxilla and at least 4 implants in the mandible. The
prosthesis design should prevent overloads by extensions. The tension-free
seat of a secondary (double crown) or primary (bar) splinted structure on
implants is called as «passive fit». With double crown constructions, this is
obtained through intraoral bonding of the secondary copings (e.g. electroformed
copings) to a tertiary framework. The tension-free seat of the superstructure
is of paramount importance for the long-term prognosis of a prosthetic
restoration. We recommend bonding secondary copings intraorally
in the tertiary framework.
IMPRESSION TAKING AND FABRICATION
OF THE PLASTER MODEL
For double crown restorations, the impression is taken with CONELOG ®
impression post, open or closed tray (see pages 18–24).
For cast fabrication, CONELOG ® lab analogs are used (see pages 25–28).
CONELOG ® IMPLANT SYSTEM
PROSTHETIC RESTORATIONS
CAST FABRICATION FOR MILLING TECHNIQUE
For milling the CONELOG ® abutments, we generally recommend creating a
separate milling cast. The milling cast is fabricated by transferring the
CONELOG ® lab analog positions from the working cast using CONELOG ®
impression posts, which are connected in a transfer construction with suitable
acrylic. The construction is connected with acrylic in the retentive area
of the impression posts. Acrylic must not get on the fixing screws.
Working cast with CONELOG ® Lab
analogs
Placing the CONELOG ® Impression
post, open tray
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