I've had a Lumineer bridge for a while and they have been nothing but trouble. I experienced a chip on front tooth for absolutely no good reason. I was talking and felt this "pop" in my mouth. Later I felt the piece of the tooth on my lip. I went in and as if they expected it, they said "Let's schedule a repair".
Since then, I have been back four times for the same procedure. My dentist tends to make you feel as if you can't possibly understand all that this entails, but my philosophy is "If it smells like a duck...walks like a duck ...and quacks like a duck....! A bad product that has been promoted by dentist because of the kickbacks. Plain and simple.