re: OT Dentists - Over-diagnosing cavities

I had a childhood dentist tell my mother when I was 15 that I needed preventive fillings. I had never had a cavity in my life. My mother trusts this guy and he drills all my healthy molars and fill it with mercury based amalgams. Now I am not going to argue whether it is a good idea to put mercury in someones teeth. Fast forward to my mid 30's and my molars all start to fracture thanks to the contraction/expansion properties of mercury. I have never had any decay in my mouth despite the cracked teeth. Just genetics that have kept my teeth straight and resistant to decay. Yes I am pissed at my dentist from childhood for ruining my healthy mouth. Yes I realize there are many good dentist that do great work. As a consumer do you have to be careful and chooses wisely yes. This goes for all professions too. There is not a single discipline that that does not apply too.