How Can Microbes Spread Through the Body?
The various parts of the body, including the gums, are connected by a lymphatic tissue, which is practically a series of canals. If the teeth are not properly attended to and kept in good condition, both as to cleanliness and repair, the microbes or germs collect on the gums and teeth, and increase in numbers. Soon the mouth is over-populated with microbes and are pushed off the gums or teeth into the lymphatic canals, where they succeed in developing a disease in your body.
Now the ache in the tooth becomes a blessing very promptly if it begins soon after the tooth begins to decay, because in that event the dentist is visited and the tooth filled or pulled. Therefore, while it hurts terribly, it might be well to remember that a toothache is a timely warning of danger which, if not heeded, will likely develop into something quite serious.