What is Pekkton (PEKK)?
PEKK is a thermoplastic polyaryletherketone or PAEK. It is similar to PEEK that is used for temporary dental implant abutments. I use PEEK on a regular basis for immediate anterior temporary implant crowns. The patent for PEKK is owned by this company and Anaxadent is the US distributor. It is being marketed as a metal replacement for dental implant cases and implant supported denture or bridge cases. I’m noticed it recently in talking to some dental lab guys and in some of the dental lab trade magazines. It is especially interesting because it has compression abilities and acts as a shock absorber. This is what the 3M Lava crowns were originally trying to accomplish. Unfortunately, their ability to remain cemented on implant abutments and crowns caused many to stop using the material. The advantage of having some compression in our implant prosthesis is that they will then act more like natural teeth. PEKK compression ability will hopefully compensate for the lack of pdl. The reason given for not using this full contour is that it is not currently tooth colored, but is instead more of a bone color.
Could this be the the material that will result in crowns being 3D printed in our offices? I think this is on the right path!
As you can see from this pyramid, we have PMMA, that we use for implant supported denture temporaries, along with other polymers at the base. PEKK and PEEK are at the top of the pyramid, apparently meant to represent more strength.
This product can be milled and pressed today. Used as a coping, composite or emax can be placed over the top of it. For the large implant cases, there are some really nice examples online of full arches that use PEKK as the framework and have emax or zirconia crowns over that.
Want to see PEKK in action?