White Zirconia Abutments

[Eng Joo Koh, RDT]

[Cary Feuerman, DMD]

Thank you again! You're in my lecture with credit. 

[Eng Joo Koh, RDT]

A better focused shot.

[Eng Joo Koh, RDT]

Conical connection designs are flared in increased zirconia thickness to withstand fracture. Failure is usually due to some other factors. There will always be nervous restorative dentists who are apprehensive about the zirconia material...simply because they have not used it enough to have faith and trust in the strength of the material.

[Eng Joo Koh, RDT]

Hi Doc, Usually we do have to modify the margin level to keep them sub-gingival. They have the 1.3mm to 2.4mm collar to choose from. The cylinders are usually bulky enough to allow angular modification to keep the abutments parallel. Waxing up the abutments to the size and shape you want and scanning it to get a customized abutment in zirconia is what I will do (instead of doing the 2 steps you mentioned). Yes, you may use my photos for the lecture ... just mention Koh from Supreme Dental Ceramics in Toronto.  Thanks.

[Cary Feuerman, DMD]

Thanks Eng Joo.  Procera esthetic abutment is pre-fabriacted, off the shelf.  Did you have to modify the margins in any way?  Also, some of the restorative docs are nervous about the zirconia insert.  So, for the conical connection (Active and new CC fixtures), I have seen a titanium stock abutment that has been shaved down to the base and then has a custom Procera abutment secured to the base to create a combination abutment (similar to Replace tri lobe).  Any thoughts?  Have you done this?  Drawback is second cement line.

PS.  I am lecturing on the CC fixture and abutments on Tuesday.  May I use these photos with credit to you?

[Cary Feuerman, DMD]

Hi Eng Joo,

Nice labwork!  Do these zirconia abutments have a metal insert into the fixture at the connection (hard to tell from the photo), or are they 100% zirconia?  What implant system?