Tooth Infections: Symptoms and Treatment
A tooth infection occurs when bacteria invade the inner pulp of a tooth, often causing severe pain and swelling. Without treatment, infections can spread and lead to more serious health concerns.

A tooth infection, also called a dental abscess, happens when bacteria get into the soft tissue inside your tooth or the surrounding gum tissue. This usually results from untreated cavities, a cracked tooth, or advanced gum disease. The infection creates a pocket of pus and pressure that causes real pain.
The important thing to know is that it won't resolve on its own. Antibiotics can help manage symptoms temporarily, but the source of the infection has to be treated by a dentist. Waiting only gives it time to get worse.
How to Tell if You Have a Tooth Infection
Watch for a severe, persistent, or throbbing toothache. Pain that spreads to your jaw, ear, or neck. Sensitivity to hot and cold that lingers. Pain when you chew or bite down. Swelling in your face, cheek, or lymph nodes. Fever. A bad taste in your mouth that won't go away. Or a small bump on your gums near the affected tooth that may be draining.
If you have facial swelling combined with fever and difficulty breathing or swallowing, go to the emergency room. That means the infection may be spreading beyond the tooth.
How We Treat It
In many cases, root canal therapy saves the tooth. Dr. Lee removes the infected pulp, cleans and disinfects the canals, and seals the tooth. A crown is placed afterward for protection. Root canals have a reputation for being painful, but with modern techniques and anesthesia, most patients say the procedure itself was no worse than getting a filling. The infection beforehand is almost always the worst part.
If an abscess has formed, Dr. Lee may need to drain it first to relieve pressure. Antibiotics may be prescribed alongside treatment, but they support the fix rather than replace it.
In cases where the tooth is too far gone, extraction followed by an implant or bridge may be the better option. Dr. Lee walks you through the pros and cons before anything happens.
After treatment, expect some sensitivity for a few days. Nothing major. Keep up your normal brushing and flossing routine and follow any specific instructions Dr. Lee gives you. The goal is to never have to do it again.
Have Questions? We're Here to Help
Our team is ready to answer your questions and help you achieve optimal dental health.