Tooth Decay: When Cavities Stop Hurting and What to Do - Dentistry

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Cavities may not cause pain?


I have been experiencing tooth pain from a cavity for several days; it hurts when I eat and even when I bite down.
However, today the pain has surprisingly stopped.
There are dark spots on the surface of my tooth.
Does this mean the cavity has reached the nerve, causing it to die? Will I need a root canal? Will the procedure be painful?

Doris, 10~19 year old female. Ask Date: 2017/03/06

Dr. Qiu Qiongyao reply Dentistry


Dear Ms.
Doris: Regarding the questions you raised, please see the following: 1.
Please visit a dental clinic for an accurate diagnosis before proceeding with any treatment.
2.
It is possible that you are experiencing gingival inflammation.
Please pay attention to oral hygiene to prevent plaque buildup, which can lead to painful gingival inflammation.
The Hualien Hospital of the Ministry of Health and Welfare cares about you.

Reply Date: 2017/03/06

More Info


Tooth decay, commonly known as cavities, can be a significant concern for many individuals. When you experience pain from a cavity, it typically indicates that the decay has progressed to a point where it is affecting the nerve or pulp of the tooth. The fact that your pain has subsided could be misleading; it may suggest that the nerve has indeed been damaged or has died, a condition known as pulp necrosis. This can occur when the decay reaches the inner layers of the tooth, leading to inflammation and infection.

The presence of a dark spot on the tooth surface is often a sign of decay, and if it is accompanied by a lack of pain, it could indicate that the nerve has been compromised. However, it is essential to understand that the absence of pain does not mean the problem has resolved; rather, it may indicate that the nerve is no longer functioning properly.

In cases where the decay has reached the nerve, root canal therapy (commonly referred to as "nerve extraction") is usually necessary. This procedure involves removing the infected or dead pulp tissue from inside the tooth, cleaning the root canals, and sealing them to prevent further infection. Many people fear that root canal treatment will be painful, but advancements in dental techniques and anesthesia have made this procedure much more comfortable than in the past. Most patients report feeling little to no pain during the procedure itself, thanks to local anesthesia. Post-treatment discomfort is typically manageable with over-the-counter pain relievers.

If you suspect that your cavity has progressed to the point of nerve involvement, it is crucial to consult a dentist as soon as possible. Delaying treatment can lead to more severe complications, including abscess formation, which can result in swelling, fever, and the potential loss of the tooth. Additionally, untreated infections can spread to other areas of the body, leading to more serious health issues.

In summary, while the cessation of pain might seem like a relief, it is essential to have your tooth examined by a dental professional to determine the extent of the decay and the appropriate treatment. Root canal therapy may be necessary if the nerve is affected, and it is generally a safe and effective way to save a tooth that would otherwise need to be extracted. Always prioritize your dental health and seek professional advice when experiencing symptoms of tooth decay.

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