Hybrid Restorations with the CAMLOG Implant System (PDF

HYBRID RESTORATIONS WITH THE CAMLOG ® IMPLANT SYSTEM
DOUBLE CROWN
RESTORATIONS
For fabrication of double crowns using the electroplating technique, the
manufacturer's specifications must be observed. The preparation for the
cast fabrication of double crowns occurs similar to the cone-telescopic
crown technique. To prevent the caps from rotating, the abutments are
lightly ground in oval form. The surface must be homogeneous.
The space for the tertiary framework required to receive the secondary
crowns can be tested at every phase of preparation with the silicone index
with the denture teeth in position.
FABRICATING SECONDARY COPINGS
The secondary crowns or superstructure are then fabricated. The tensionfree
seat of the superstructure is of paramount importance for the longterm
success of an implant-prosthetic restoration. We recommend bonding
the secondary copings intraorally into the tertiary framework (passive fit).
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NOTES
Electroformed secondary copings
Electroforming is conducted as specified by the manufacturer. The
CAMLOG ® abutments are inserted into a CAMLOG ® lab analog of the
appropriate diameter and fixed with a CAMLOG ® lab screw. The thickness
should be 0.2–0.3 mm. The special feature of the low layer thickness
of the electroformed components and the resulting low stability of
the secondary coping prevent direct polymerization in the acrylic denture
base. For this reason, a tertiary framework must be fabricated over
the secondary copings for reinforcement.
Cast secondary copings
The wall thickness of the secondary copings should be approx. 0.5 mm.
Fabrication is similar to standard crown and bridge technique.
CAUTION
Do not mix up the CAMLOG ® abutments and secondary copings! We
recommend a color buccal marker on the abutment, coping and working
cast.
For information about "Fabricating a tertiary framework for double crown
restorations", "Bonding of the secondary coping intraorally" and "Insertion
of the prosthetic restoration", see pages 67–68.