Can a bad tooth cause gland infection?

A bad tooth, also known as a dental abscess, can indeed cause gland infection. Here's how:

1. Bacterial Spread: A dental abscess is an infection caused by bacteria that have entered the pulp of the tooth (the innermost part containing nerves and blood vessels). These bacteria can spread beyond the tooth and into the surrounding tissues, including the jawbone and gums.

2. Lymphatic Drainage: The lymphatic system is a network of vessels and nodes that help drain fluid and waste from tissues throughout the body. The lymphatic vessels in the head and neck region drain into lymph nodes located in the neck and under the chin.

3. Lymph Node Infection: When a bad tooth causes an infection in the jawbone or gums, the bacteria can travel through the lymphatic vessels and reach the lymph nodes in the neck. This can lead to swelling and infection of the lymph nodes, known as lymphadenitis.

4. Parotid Gland Involvement: The parotid gland is one of the major salivary glands located on either side of the face, just in front of the ears. The parotid gland produces saliva that helps with digestion and moistens the mouth.

5. Stensen's Duct: The saliva produced by the parotid gland is secreted into the mouth through a duct called Stensen's duct. The opening of Stensen's duct is located near the upper second molar tooth on the inside of the cheek.

6. Spread to Parotid Gland: In some cases, the infection from a bad tooth can extend along Stensen's duct and reach the parotid gland. This can cause inflammation and swelling of the parotid gland, leading to a condition known as parotitis.

Therefore, a bad tooth can cause gland infection, particularly of the lymph nodes in the neck and the parotid gland, through the spread of bacteria via the lymphatic system and Stensen's duct. It is important to promptly address a bad tooth to prevent complications, including the spread of infection to nearby glands.