1) I don't think anybody's every triggered a tooth or gum infection with 2 teaspoons of sodium bicarbonate = baking soda. Some people take it as an antacid, some use it as toothpaste. It's remarkably benign stuff, really. Coincidence? I think so, though the pressure you put on the tooth may possibly have triggered something.
2) My temp seldom gets as close at 37.1 to "normal". Do you know what your healthy normal temperature is (at various times of day)?
3) Wisdom tooth extraction isn't all that minor, and they certainly don't give you the meds and attention that they'll give you if and when the BIG truck hits you, so I wouldn't worry about the comparison. I actually felt worse (and felt more pain) after ALL THREE of my previous "minor" surgeries (two hernias and an Achilles repair) than I did after my AVR! (As I recall, I suffered a bunch after some wisdom-teeth extractions, too.)
4) My fave recent article (by Tirone David et al, 2010) on the risks to us pig-valvers reported something like a 1.3% per year chance of getting Bacterial Endocarditis (BE) AFTER getting an AVR. I assume the probability is a bit lower before the AVR, though I don't really know that for sure. That's still 98.7% chance of escaping for another year, and a pretty good chance of escaping for ALL your years. . .
5) There are no guarantees anywhere around here, but you sound like a member of "the worried well" to me!
My Dad used to tell a joke that might (or not) help: It's about a guy who was worried about dying young, so he asked his Doctor what to do. The Doc told him to cut out wine, women, song, and a bunch of other things he really loved. "THEN will I live forever, Doc?" "No, but it will SEEM like forever!"
BAV, extended ARoot, some MV damage.
68 y.o. (65 @OHS), keen active athlete until shortly pre-op, only symptomatic 1-2 months pre-op.
AVR (Medtronics Hancock II) Dec. 1 2010 w/ Dr. C.M. Feindel at UHN aka Toronto General. Also a "tuck" on the Aortic root, and a (Dacron) Medtronics Simplici-T ring on my MV. I did ACT for 3 months for the ring, and Metoprolol (BB) for 3 months for A-fib.