you got a filling, you have a damaged if not toxic tooth...once drugged/poisoned, that tooth will never repair its self. the toxic material filled your tooth, the socket, your jaw and spread through out your body and will never ever be 100% removed....your poisoned the rest of your life and by removing the source, you stop the source and then the body seeks to remove the toxic material from the bones/cells which most sources say it can not do in a lifetime.
the laser dentist is less toxic, faster and makes more $$$$ for less work.
the only solution is preventitive and once filled by a dentist, that tooth cna only be treated and never ever cured.