Thread Configuration on Healing Cap Different than Impression Coping: Recommendations?

Last Updated: Oct 23, 2011

Dr. P asks:
I have a patient who presented with implant fixtures installed about 12 years ago somewhere in the United States. At first I thought this was a 3.25mm 3i Osseotite parallel walled cylinder Certain. When I removed the healing cap and attempted to place the transfer impression coping I noted that the thread configuration on the healing cap was different from the thread configuration of the impression coping. Should I attempt to screw down the impression coping? Has anyone encountered this problem? Any
recommendations? Can anyone confirm that this is the implant I think it is and if not, what implant is it? Thanks.

Healing Abutment

Different Internal Thread

Internal Configuration

Exposed Flange

5 Comments on Thread Configuration on Healing Cap Different than Impression Coping: Recommendations?

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John Kong, DDS

10/24/2011

If this fixture was place in the US about 12 years ago, it could only be a handful of implants. The internal hex configuration with the lead in bevel leads me to think this is a Sultzer/Centerpulse/Zimmer implant (all the same) and not a 3i ossteotite implant. try a zimmer transfer coping for impressioning.

10/26/2011

This is definitely NOT a 3i Osseotite Certain, as the Certain system was not around yet 12 years ago. It was launched in 2003. Maybe a radiograph of the implant will give some insight as to what implant system it is.

dr.t

10/26/2011

quote "Should I attempt to screw down the impression coping?" /quote ABSOLUTELY NOT! Never force a round peg into a square hole (figuratively speaking, of course)! If you strip the threads, you're done for. Either wait until you know/have the correct components, or refer to someone who might.

Robert Penning

10/26/2011

I would like to post the photo to go with this original subject. How can I do this?

Carl Miller

11/06/2011

There were only so many internal hex designs with a lead in bevel 12 years ago. Only two places to find it if it is the original - Zimmer or Implant Direct - exact same thing.

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