Richie,
I was speaking for myself and using pericarditis as but one fear of lingering tooth abcess. I could just as well have said "septic shock."
I have 3 prostheses, one in my heart, and I go to lengths to avoid septic infections of any kind.
A bad tooth throughout history has had but one outcome, removal before the jaw becomes gangrenous and infection spreads throughout the body.
I think that hanging onto diseased teeth by prolonged use of antibiotics in order to preserve a "smile" is dangerous. I think it is more dangerous for people with heart disease.
In any case, I think only a CORPSE can hold a normal blood pressure while battling a toothache (and all its $$$consequences$$$.)