Question: Can Cavities Spread?

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.

Can cavities spread to your brain?

An infected tooth can result in the spread of infection to nearby parts of the body such as the jaw, neck, sinuses, and even the brain.

Can a cavity kill you?

Cavities are very serious. Left untreated, a cavity can destroy your tooth and kill the delicate nerves at its center, which may result in an abscess, an area of infection at the root tip. Once an abscess forms, it can only be treated with a root canal, surgery or by extracting the tooth.

Are cavities contagious?

The Claim: Dental Cavities Can Be Contagious.

While candy and sugar get all the blame, cavities are caused primarily by bacteria that cling to teeth and feast on particles of food from your last meal. Just as a cold virus can be passed from one person to the next, so can these cavity-causing bacteria.

What happens if a tooth cavity is left untreated?

An untreated cavity can lead to an infection in the tooth called a tooth abscess. Untreated tooth decay also destroys the inside of the tooth (pulp). Carbohydrates (sugars and starches) increase the risk of tooth decay. Sticky foods are more harmful than non-sticky foods because they remain on the teeth.