Hello,

I'm a 44 years old male. A composite filling in one of my upper
'corner teeth' (number 3 from centre of the mouth) was getting old and
loose so I went to see the dentist. After making a new filling he said
he was not satisfied with it because it got the wrong color. The
filling was too white compared to the tooth, and he told me to come
back and he would fix it. So I came back some days later and he took
off some of the filling he made last time (not everything) and put in
more composite. He said he used 3 different colors. Now everything
looked fine and I was satisfied. Then after 2 days the filling fell
out. I think it's just some of the stuff he put in the last time that
fell out. So now I got to go back to fix it for the 3rd time.
I would like to know;

1) Is it good dental practice to put a composite filling on top of
another composite filling? Will this be as strong and durable as if
the filling was made in 'one piece'?
2) Does the fact that the dentist need (at least) 3 tries before he
get the filling correct lead to the conclusion that the dentist is
less professional than he should be?
3) Will the happenings I have described here cause me to loose much
more original tooth material than what should have been necessary?

Thank you for answers!

Frank