Zirconia Implants vs. Titanium Implants?

We simply do not have the same long range (35 years) data on Zirconia implants (just a few years) as we do for titanium. So, unfortunately no one can honestly answer this question. My question in response would be: unless you have an allergy to titanium (extremely rare) why are we trying to "reinvent the wheel?" Quality implant systems using titanium show 35 years of success upwards of 96%. There is no need to consider Zirconia implants. Zirconium abutments "yes", but not implants.