Cavitations are very common. The immune system can do a pretty good job of keeping the bacteria localised, but in those severely immune compromised, sometimes this can become systemic with the immune system no longer able to keep this in place. Common causes of cavitations are the use of vaso-constrictors in aneasthetics (used to restrict blood circulation to the area, allowing prolonged and more intense numbing. Personally I never felt they worked any better than ones without vaso constrictors, if anything I had MORE problems with them and severe heart palpitations. I request non vaso-constrictors).

The next cause of cavitations is when the tooth is extracted, most dentists/oral surgeons, leave the periodontal ligament behind. This is what held the tooth (a bit like an umbilical cord). It SHOULD always be removed. Every bit of anything left behind should be cleared out to allow for proper healing and bone growth over the area. If not? potent gram negative bacteria can thrive there instead and of course spread from the jaw into the rest of the body.

Hal Huggins said that cavitation patients are sicker than the mercury ones! It has the potential to do great harm. It's been compared to mustard gas.

If your impacted wisdom tooth is not causing problems, I would simply take care of it and make sure you clean around it well and leave it alone (personally). I had slightly impacted wisdom teeth also and had them removed and they were perfect. I should have just left them alone, but the dentist said "Well they're impacted, they should come out to avoid future problems". Far from avoiding future problems, coincidence or not? I got MUCH MUCH sicker following those extractions and went down hill and never really came back up.

The one that has already been extracted? You can ask a biologic dentist who understands cavitations to open that site up and clear it out if you are concerned. Xrays can miss cavitations, they are notoriously difficult to diagnose. Hidden cavitations are the typical name and for good reason.

Whatever you do, make sure you request a non vaso-constrictor,/non epinephrine anaesthetic and ask that the peridontal ligament be removed as well as the tooth (if you are getting the impacted wisdom tooth removed). Eat a very healthy diet, taking minerals like magnesium and calcium also to aid healing (cod liver oil can also be helpful or halibut oil for vitamin A and D). Plus antioxidants like C, E and selenium.

Do not take vitamin C on the day you are having dental work, it apparently interferes with the numbing of the anaesthetic. So avoid vitamin C and possibly other antioxidants for about 48 hours before the dental work just in case. Take them immediately after the dental work or when you get back home.

If I was you? I would just tackle one thing at a time. You may want to get the amalgams dealt with first before tackling the wisdom tooth or possible cavitation from other extractions. Whatever you do, a reputable biologic dentist knowledgable about these things will be your best bet!

Here is a link explaining it all much better than me and in more depth.
http://www.livingnetwork.co.za/healingnetwork/day_of_dental_visit.html

I personally find some of this a bit on the extreme side, e.g. saying never get ceramics etc. I've known people who have had cerec porcelain (ceramic) and are doing fine. It's a very biocompatible material, as are many other ceramics too and they last a lifetime in some cases. Not everybody does great on plastic composites either. We're all different, so it might be wise to do a compatibility test, whether you opt for ceramics or composites.