I am 59 years old. ALL of my molars became infected and had to have root canals except for TWO. These two were crowned when I was in my 20's to suppot a bridge for a missing molar. Aragorn's dentist has a point. Had all my molars been crowned in my 20's, I probably would not have lost so many teeth due to conventional, destructive drill-&-fill dentistry. My health has suffered greatly as a result of the root canals. I'm a total wreck from my two most recent RC's 6 weeks ago. I suddenly have wide spread boby, bone andjoint pain, small wounds that haven't properly healed, crushing fatigu, dry, inflammed eyes. Now I'm facing a tough decision... extraction & implants or partial dentures. Conventional modern dentistry is the devil.