Is it normal to have pain after filling a cavity?

Written by Li Bao Hua
Dentistry
Updated on September 02, 2024
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Mild pain after filling a cavity is normal. This is often seen when glass ionomer materials are used for fillings. Glass ionomer materials expand in volume within 24 hours of mixing, which can stimulate the dental nerves and cause pain. However, the pain should gradually decrease or disappear after 24 hours. If there is severe pain after the filling, it may be due to the filling material being too high or the tooth decay being too deep, reaching the dental nerves and causing nerve pain. This situation is abnormal and requires root canal treatment.

Other Voices

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If the cavity doesn't hurt, does that mean it hasn't reached the nerve?

It is necessary to make judgments based on the patient's symptoms and examination results. Dental caries refers to the chronic, progressive, destructive disease occurring in the hard tissues of the teeth under the influence of various factors such as plaque bacteria. Whether dental caries is painless or has reached the nerve, the simplest clinical method is to judge based on the patient's symptoms, asking whether the patient experiences pain. In the early stages, there are only changes in the color and texture of the tooth, which do not cause pain. In the later stages of the disease, due to necrosis of the dental pulp, pain may not occur. At this time, diagnosis can be assisted by dental films; an X-ray can show the low-density shadow produced by the caries, and whether this low-density area significantly erodes into the dental pulp, which is also an auxiliary diagnostic method. Therefore, it is important to maintain oral hygiene, brush teeth morning and evening, and rinse mouth after meals.

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What will happen if you insist on not getting a root canal for a cavity?

When a patient has dental caries, if they insist on not undergoing root canal treatment, it may lead to the exacerbation of tooth decay, damage to the tooth root or gum tissue, and long-term stimulation can cause the gums to shrink, and even lead to tooth loosening and loss. Therefore, it is recommended that if a patient has dental caries, the best method is to perform some filling restorative treatments. If the decay reaches the nerve of the teeth, it can cause symptoms of nighttime pain, or biting pain, so it is advised that the patient should undergo root canal treatment. Once tooth decay occurs, if it cannot be treated with self-repair, it is not possible to completely heal itself, and this will lead to further development.

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Will cavities improve after changing teeth?

Cavities in baby teeth can heal when they are replaced by permanent teeth, but cavities in baby teeth still need to be treated. Because the decay can deepen, leading to premature loss of the tooth, which can affect the development of the permanent teeth. Severe cavities can lead to abnormal development of the permanent teeth, and even after the child's teeth are replaced, the new teeth may not be in good condition. For example, if the root of a baby tooth becomes inflamed and the inflammation is not treated and cleared, the alveolar bone around the tooth root can also become inflamed. Below the alveolar bone is the germ of the new tooth, and prolonged inflammatory stimulation can affect the germ of the permanent tooth. Additionally, premature loss of baby teeth can lead to the loss of adjacency between teeth, which can affect the growth and development of permanent teeth. Therefore, it is important to detect and treat cavities in baby teeth early, and ideally perform pit and fissure sealants before cavities form.

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How to treat a cavity that has decayed to the root of the tooth?

For a tooth decayed to the root, it is first necessary to take an X-ray of the tooth. If the X-ray shows that the root still has some salvage value, the tooth can be preserved through root canal treatment after controlling the inflammation. If the decay has reached the tip of the root and the root has no salvage value, the tooth needs to be extracted soon after controlling the inflammation. After the tooth is extracted, it is necessary to get a dental prosthesis as soon as possible depending on the condition of the tooth. If the prosthesis is not done in time, the tooth above may elongate, and the teeth on either side may tilt towards the gap, potentially leading to the loss of space over time.

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How to treat cavities in the early stage?

Cavities, also known as dental caries, are a chronic, progressive, destructive disease caused by bacterial infection of the hard tissues of the teeth. Based on clinical manifestations, cavities can be classified into incipient, moderate, and deep caries. Incipient caries are limited to the enamel layer and might present as demineralization of the teeth, a condition that can be treated with tooth remineralization. If the cavity reaches the dentin layer, clinically it is characterized by pain while eating or sensitivity to cold, heat, or sweet and sour stimuli, and this condition requires the removal of the decayed dental tissue followed by filling treatment. Early treatment of cavities usually does not involve noticeable pain; however, if not treated promptly, the decay can further progress and potentially lead to nerve infection of the tooth, causing severe pain.