You would be surprised to know that cavities are contagious. Cavities are permanent small holes in a tooth and are a result of tooth decay. There are three types of cavities, which are coronal and root cavities, and recurrent decay. The hole can get bigger if it is not repaired and treated. This can become a serious matter that can not only destroy the tooth, but can also kill delicate nerves. A sticky, slimy film called plaque causes cavities, but it is a combination of factors that causes it. Bacteria in the mouth, frequent snacking, eating carbohydrates and drinking sugary drinks, and not cleaning teeth well, allow the bacteria to produce acids that stick to plaque and then attack tooth enamel. Plaque accumulates on teeth as soon as 20 minutes after eating. Tooth decay can begin quickly and cavities can be contagious.

The bacteria that cause cavities can be passed from person to person just like a winter cold. Bacteria that stick to food particles from the last meal and teeth produce acids that threaten gum health. These bacteria are called Streptococcus mutans and Streptococcus sobrinus. The bacteria are able to travel from person to person through saliva. This can be through kissing or simply sharing a drink with the same straw and happens more often than one might think.

Cavities are more contagious than one can possibly imagine. The bacteria that cause cavities is passed through vertical transmission. It is done during activities that seem harmless. Parents put their children at a higher risk for transmission. A father or a mother usually tastes food to ensure it is not too hot or warm before serving it to their child. Sharing the same utensils or even toothbrushes can spread cavities. Sneezing can also pass on bacteria. A person who romantically kisses a person who does not practice good hygiene and does not make regularly visits to the dentist can get cavities. Some individuals have great oral care and have never had cavities and still get cavities. When a person enters a new relationship the bacteria can be spread. They are shocked to find this out, but this is because some individuals have greater cavity causing bacteria in their mouths. The bottom line is that bacteria can be passed anytime germs and saliva is passed on. Cavities will not form without the help of bacteria. Good oral hygiene can prevent cavities.