Temporary Abutments for Crown and Bridge Restorations

12 TEMPORARY ABUTMENTS FOR CROWN AND BRIDGE RESTORATIONS OPTIONAL For fixation of the long-term temporary restoration, the tightening torque is 20 Ncm after a successful healing phase of the implant. Retighten with the same torque after approx. 5 minutes to reach the maximum screw tension. These values apply to all temporary abut- ments made of titanium alloy. After customizing and covering with opaque, the temporary abutment is inserted into the implant and screw-retained with an abutment screw. 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. To loosen the temporary restoration again, the screw channel of the abut- ment must be opened for the screwdriver after the plastic has hardened. The temporary restoration is then shaped and the abutment, including the abutment screw, inserted back into the implant and the screw tight- ened accordingly. 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 solutions similar to those used in conventional crown and bridge resto- rations. For reasons of stability in a bridge construction, a metal rein- forcement can be integrated into the temporary restoration in terms of a long-term temporary restoration. INSERTION OF TEMPORARY RESTORATION Thoroughly clean and dry the inner configuration of the implant prior to inserting the temporary abutment. Insert the temporary abutment into the implant, for the crown version rotate until the cams engage with the grooves. After tightening the abutment screw manually with a screw­ driver, hex, the screw head is sealed with an easily removable material­ (e.g. gutta-percha). The screw canal must be sealed for esthetic and hy- gienic reasons with a removable material (e.g. composite). Customized temporary abutment on the working cast Insertion of a temporary single-tooth restoration veneered directly with plastic