You would expect that root canals WOULD be less dangerous given new technology, methods etc. But it STILL depends on the skill of the dentist on that given day, the faith that he's using the best technology has to offer etc. And considering potential bacteria breeding grounds are created, it's hard for me to think of this as being safe - especially given the heart link.
That's great that you're regularly adding the liquid COQ10! Do you feel more energized these days? Do people comment on how young you look? I can't even use the Q10 more than every few days without getting amped out. You're right about Q10 being both excellent for the heart as well as the gums. What kind of results have you had so far?