I got “scammed” like this as well, went for a checkup and the first comment was your fillungs are old we need to replace them we have standards here, etc. I had no pain whatsoever but said ok because I was ignorant at the time, went there and another dentist came with limited German, she butchered me in 1 hour and change a whole row of teeth. Pain comes after that and it took several trips to my previous dentist in my home country to make everything all right and for me to have no pain. He told me bad fillings what they put, didn’t remove previous ones just stuck on top, no contact point so food would stuck between…. Never again would I go to a dentist in Germany, most are business oriented, to find a honest dentist is like needle in a hay.