Q. I RECENTLY UNDERWENT EXTENSIVE COSMETIC TREATMENT OF WHICH PART OF IT WAS TO REPLACE A FRONT TOOTH THAT WAS MISSING.AT THE BEGGINING OF MY TREATMENT MY DENTIST ADVISED A THREE UNIT FIXED BRIDGE. BUT ENDED UP PUTTING IN A TWO UNIT BRIDGE WITHOUT ADVISING ME. THE FALSE TOOTH THAT REPLACES THE GAP IS NOW ATTATCHED JUST TO ONE TOOTH. I HAD A SECOND OPINION AND WAS TOLD THIS WILL NOT LAST AND THE TOOTH SUPPORTING THE FALSE ONE IS ALREADY MOBILE. I GAVE THE SECOND OPINION TO MY DENTIST WHO HAS NOW SAID THAT I SHOULD HAVE HAD AN IMPLANT, WILL THIS BRIDGE DEFINATELY NOT LAST, AND IF SO WHY DO DENTISTS USE THIS METHOd?