My advice: check which implant system they are using.
Implant quality varies hugely, from cheap systems which have zero research behind them, to expensive, well researched systems.
If I personally needed an implant, I would go to somebody that used one of the Brånemark systems. Brånemark have research going back to 1965, research on exact Ti alloy, surface treatment, thread design, abutment design, just everything.
Nobody else has the same research and development base. They basically invented the Ti implants as we know it today. Developed the best alloy, the best operating techniques and methods, the principles behing the whole treatment.
Number two I would say are Dentsply/Astra and third Straumann.
It is very tempting for the dentist to use a cheap implant dystem, to increase his profits. In UK, I was offered (supposedly Titanium) implants for as low as UKP 10, and that is for the implant, abutent, abutment screw, healing screw.
Brånemark charges far more than that for the smallest component, the screw that fixes
/ mates the abutment to the implant.
Where I would have it done? Sweden, UK, US. If I could, I would go to the Brånemark Institute in Gothenburg in Sweden.
The guys there are basically doing 90% of all research and development on Ti implants used somewhere on the human body.
Going to Poland or other low cost European country? Never. Why?
Because I have seen to many failed, low quality or simply ‘crazy’ treatments from there.
At the clinic I worked in in UK, we had our fair share of patients receiving treatment plans and quotes but choosing to go to a low cost country like Poland, India, Thailand, Hungary, Czech Rep., Greece, Turkey.
They went for extensive treatments including implants.
A large % developed problems of various sorts. Most large private clinics in our area ( Kent, W. Sussex, E. Sussex) refused to take on solving these problems.
Most of us recommended the patient to go back to the clinic where they had the work done.
I am trained on Brånemark implants in Gothenburg, both the surgical bit and prosthodontic bit. Did it about 27 years ago. Post grad courses since.
In UK I placed close to 1500 implants, Brånemark and Astra, a few Osteo-T.
I stopped doing them when I moved from UK. I want a less stressfull life.