Wednesday, November 7, 2012
Offices equipped with digital impression machines (iTero & Lava COS) can now transfer implant position directly to the laboratory via special scan caps. These coded, aluminum, digital-impression posts are seated and thumb-tightened into implants and scanned. With this information ROE creates a virtual implant model for abutment and restoration design. There are several advantages to this service. First, the soft-tissue architecture is precisely captured and used to create ideal emergence and margin placement. Second, digital impressions are received by our laboratory very quickly allowing us to design abutments and restorations earlier, leading to much quicker turnaround time. And third, digital files are imported into ROE’s iRis (intelligent restorative individualized system) to engineer restorations to your specific parameters. Scan caps can be ordered through ROE in both plastic and radiopaque aluminum.
The All On 4 Immediate Hybrid Technique is becoming an increasingly popular restoration. ROE has been closely involved in this process from the very beginning and provides complete restorative support from surgical guidance and in-office lab support to the final hybrid design and fabrication. Typically, the final restorative process is a five- or six-appointment sequence, preliminary impressions, final impression, a bite registration and fit verifi cation, tooth try-in, a bar try-in, and seating. We have developed a new streamlined process that eliminates half of these original steps. This technique requires one of two approaches. One option has the dentist perform a pick-up impression of the provisional, and articulate the master casts in the office. The second option requires the doctor to send the picked-up provisional to the lab to be mounted and finished, leaving the patient without the provisional for 2-3 days. Alternatively, arrangements could be made to have the patient bring the records to the laboratory to expedite the process to one day or less. To complete the pick-up, long open-tray screws must be used. Also, if the pick-up impression is compromised during the separation procedure, an alginate study cast must be captured so we can duplicate the set-up. If you are interested in more information on this technique, Joe Ambrose CDT (ext 303) will be happy to discuss it with you, or may simply request the Modified All on 4 Technique sheet.