Temporary Abutments for Crown and Bridge Restorations

10 TEMPORARY ABUTMENTS FOR CROWN AND BRIDGE RESTORATIONS The abutment can be shortened occlusally depending on the anatomical situation. However, a minimum height of 4.2 mm must be maintained. FABRICATION CHAIR-SIDE The temporary abutment is screwed with the implant (see also "Insertion of the temporary restoration"). The fabrication of a temporary crown or bridge can, for example, be per- formed with the aid of strip crowns. To prevent acrylic material from flow- ing into the screw channel, the channel needs to be sealed with an easily removable material beforehand. This is followed by finishing of the tempo- rary restoration. FABRICATION LAB-SIDE The temporary restoration can also be fabricated in the dental laboratory on the working model based on the procedure for fabricating temporary solu- tions similar to those used in conventional crown and bridge restorations. For reasons of stability in a bridge construction, a metal reinforcement can be integrated into the temporary restoration in terms of a long-term tempo- rary restoration. NOTE ON BRIDGE RESTORATIONS The insertion directions of the bridge abutments, indicated by the im- plant axial direction, rarely match. For this reason, bridge structures should not be fabricated in one piece (firmly attached) with the tempo- rary abutment. Therefore, the temporary abutments are first screwed on the implants, then the temporary bridge is mounted finally (Passive Fit). Minimum height 4.2 mm CAMLOG ® Temporary abutment (PEEK) Customized temporary abutment on the working cast Temporary abutment with plastic crown CAMLOG ® Temporary abutment PS (PEEK) INSERTION OF THE TEMPORARY RESTORATION Thoroughly clean and dry the inner configuration of the implant prior to in- serting the temporary abutment. Insert the temporary abutment into the implant and rotate it until the cams engage with the implant grooves. After hand-tightening the abutment screw with a screwdriver, hex, seal the screw channel with an easily removable hard material. Do not use compos- ite, since drilling it out would be required in order to remove the screw. Make sure that the screw channel is not overfilled; the surface should be concave. The temporary crown or bridge is mounted to the customized abutment using a suitable bonding material. Excess material must be re- moved completely. Insertion of a temporary abutment PEEK with plastic crown