Go on over to Survival Medicine and check this out!
Sample graf: “Anyone who has had to perform a task while simultaneously dealing with a bad toothache can attest to the effect on the amount and quality of work done. If your teeth hurt badly, it’s unlikely that your mind can concentrate on anything other than the pain. Therefore, it only makes sense that you must learn basic dental hygiene, care, and procedures to keep your people at full work efficiency. It could easily be the difference between success and failure in a collapse. In normal times, however, you should understand that the practice of dentistry without a license is illegal and punishable by law. Seek modern and standard dental care wherever and whenever it is available. “
While you’re at it, another good reference is, “Where There Is No Dentist,” by Murray Dickson. First Aid also includes dental issues!
After you check both the site and the book out, consider getting your check up ASAP, as well as any preventative work you may have been putting off. If SHTF, you’ll be very, VERY glad you did.