One of the reasons could be that cavities are actually “contagious”. It might surprise you that the bacterial cause of tooth decay can be passed along from person to person. Cavities, are caused by a bacteria known as mutans streptococcus. Some individuals tend to have more cavity causing bacteria than others.
Can tooth decay spread to the jaw?
An abscessed tooth represents a severe infection that is located in a part of your body that is uniquely located to spread its damage elsewhere. Infected gums can damage the jaw bone and cause teeth to fall out. The infection can spread to the brain through blood vessels and lead to a brain abscess.
Can decay spread to other teeth?
No matter what you eat, cavities won’t form without the help of such bacteria. These germs can spread from mouth to mouth via shared food and utensils, sneezing, kissing, and more, according to Edward “Trey” Wilson, DDS, a dentist in private practice in New York City and New Hope, Pa. — making cavities contagious.