Do You Need a Root Canal? Symptoms of an Infected Tooth
An infected tooth is a serious condition that should be treated sooner rather than later. It may even be an emergency. Here are some of the symptoms that can let you know if you have an infected tooth:
- Spontaneous, throbbing tooth pain
- Lasting sensitivity to heat or cold
- Lasting sensitivity to pressure
- Persistent foul breath
- Swelling of your face or cheek
- Pimple-like sore on gums—may release foul-smelling and –tasting liquid when it bursts
- Tender, swollen lymph nodes
- Fever
Not everyone experiences all these symptoms. In particular, pain and sensitivity are highly variable. You might have a serious infection but feel little in the way of pain. Our New Hanover County dental practice regularly treats patients who delayed care because symptoms seemed minor. If infection symptoms are spreading from your teeth to your sinuses, you should seek urgent care—this can lead to a life-threatening situation.
What Is Root Canal Therapy?
The outside of your tooth is made of hard, mineralized tissue that protects your smile and overall oral health. Inside the tooth, however, is a vital, living structure called the pulp or nerve. When bacteria penetrate through the enamel and dentin, they can infect the pulp chamber. Because the pulp contains nerves and blood vessels, this type of infection often leads to intense pain and can threaten both your tooth and your long-term oral health if left untreated.
In root canal therapy, the infected pulp is removed from your tooth, including the tunnels or canals that run through the roots of the tooth. The tooth is then filled with inert material that helps support your tooth but can’t be infected. Finally, a dental crown is placed over the treated tooth.
Root Canals Lead to Pain Relief
Root canals have a bad reputation that is undeserved. Their reputation comes from the early days of the procedure when they were performed without anesthesia. In this situation, removal of the tooth nerve could be painful.
Today, though, anesthesia ensures your comfort during the procedure. Studies show that people who have a root canal experience significantly less pain after the procedure than they did before the procedure.
Root Canal or Dental Implant?
An alternative to root canal therapy is to have the infected tooth extracted and replaced with a dental implant. In most cases, it’s best to preserve your natural tooth if possible. A tooth that has been treated with a root canal will likely last as long and function as well as a dental implant.
In some cases, the tooth has been too damaged or is surrounded by infection in the gums. In these cases, a dental implant may be a better option.

