My old silver filling was in very bad shape & I asked a dentist if he would remove it by suctioning it. He said yes, but after he numbed the tooth he drilled it and never suctioned it. When I called his attention on this, he said first that there was no mercury in that filling, then he said that he did suctioned it (he showed me the saliva suctioner that dentist always use). He filed the tooth and his plan is just cover it up with a crown, not roots canal. I'm cuestioning if this dentist is doing the right thing. Today was my second visit with him. What do you think?