FIXED PROSTHETIC PROCEDURE

Impression and Transfer Technique
Components required:

1. PerioSeal Metal Impression Post (PI0021)
2. PerioSeal Implant Analog of the correct size

The PerioSeal system offers a convenient and simple method for preparing a laboratory model. The metal transfer impression post has a mechanical attachment identical to the collet lock on PerioSeal abutments. One impression posts fits all the PerioSeal implants; however it is extremely important to use the correct size PerioSeal Implant analog.

The metal impression post may be used with an open or closed tray method.

1. Remove the healing cap or the tissue retraction abutment using the .050 hex with 1-2 turns counterclockwise (figure 1).
2. The metal impression post is placed in the implant and tightened with a .050 hex driver (figure 2). Be certain the post is fully seated. It may be necessary to retract tissue from around the implant to visually verify proper seating or take a radiograph. Inject the impression material around the transfer pin and proceed with a routine impression (figure 3).
3. Remove the recorded impression from the patient’s mouth and remove the post from the patient’s implants with the .050 hex driver. The impression material is of the clinician’s choice (figure 4).
4. Replace the tissue retraction abutment in the patient’s implant or place a PerioSeal provisional abutment with a provisional restoration.
5. Again, using the .050 hex drivers, lock the impression post into an implant analog corresponding to the size implant in the patient (figure 5).
6. Insert the locked implant-analog assembly into the impression and send to the laboratory for processing (figure 6).
7. Send the impression to the laboratory for fabrication of the working model.
   Note: The working model should always be a soft tissue model to allow accessibility to the prosthetic margin on the implant analog.
   
   Cementation Procedure
8. After the fabrication of the prostheses, remove the healing cap or contour abutment from the patient’s implant (figure 7).
9. Insert the prosthetic abutment from the laboratory in the patient’s implant and lock using the .050 hex driver (figure 8).
10. After placing the prostheses, check occlusion and verify seating by using a radiograph. Cement the prostheses to the implant abutment. The cement of choice is the clinician’s personal preference. (figure 9).

Note: It is a good practice to always orient the flat side of the impression post to the facial if possible. This method makes it easier to place the post back into the impression correctly.