Can Infected Tooth Nerves Spread to Nearby Facial Nerves?

Can dental nerve infection spread to healthy nerves?

1.
Hello, doctor.
Two years ago, I had a tooth with a crack.
I received a crown without root canal treatment.
After 3-4 weeks, I discovered that the nerve of that tooth had died.
Now, that tooth has been extracted and I am preparing for an implant.
My question is, can the dead nerve in the tooth lead to an infection from viruses or bacteria that could affect the nerves in my cheek, around my eye, and near my temple, causing discomfort in the temple area?
2.
How often should I replace my occlusal splint used to prevent teeth grinding while sleeping? Thank you.

James, 30~39 year old female. Ask Date: 2019/03/07

Dr. Lin Jiayong reply Dentistry

1.
If a bacterial infection reaches the nasal cavity or even the orbit, you may experience quite severe and intense symptoms, such as fever and facial swelling that is disproportionate.
If you do not have these symptoms, there is no need to worry excessively.
2.
The National Health Insurance provides coverage for an occlusal splint once a year.

Reply Date: 2019/03/07

More Info

Infected tooth nerves can indeed pose a risk of spreading infection to nearby facial nerves, although the likelihood and severity of such complications depend on various factors, including the extent of the infection and the individual’s overall health. When a tooth nerve dies, it can lead to a condition known as pulp necrosis, which can allow bacteria to proliferate within the tooth and potentially spread to surrounding tissues. If the infection progresses, it can lead to conditions such as periapical abscesses, which can cause swelling and pain in the surrounding areas, including the cheeks, jaw, and even the temples.

If the infection is severe, it can indeed spread to adjacent anatomical structures, including the facial nerves. Symptoms of such an infection may include swelling, redness, fever, and significant pain, which could radiate to areas like the temple or even the eye region. However, if you are not experiencing severe symptoms such as fever, significant swelling, or intense pain, it is less likely that the infection has spread to the facial nerves. It is essential to monitor your symptoms closely and consult a healthcare professional if you notice any worsening or new symptoms.

Regarding your second question about the frequency of replacing a night guard (occlusal splint) used to prevent teeth grinding (bruxism), it is generally recommended to replace these devices every 6 months to 2 years, depending on the material used and the extent of wear and tear. Regular dental check-ups can help determine the condition of your night guard. If you notice any signs of wear, such as cracks, thinning, or discomfort while wearing it, it may be time to replace it sooner.
In summary, while infected tooth nerves can potentially lead to complications involving nearby facial nerves, the risk is contingent upon the severity of the infection and the presence of other symptoms. If you have concerns about your symptoms or the health of your teeth, it is advisable to seek a thorough evaluation from a dental professional. Additionally, maintaining your night guard in good condition is crucial for effective protection against bruxism, and regular assessments can help ensure that it remains functional and comfortable.

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