

What Causes Toothache? Songpa-gu Dentist
Hello. I am Seung-hwan Shin, the chief director of Yonsei U-Line Dental Clinic, Garak Branch, located in Garak-dong, Songpa-gu.
Today, I would like to talk about toothache.

The main reason many patients visit the dentist
is pain—in other words, toothache.


People visit the dentist because of pain in their teeth when chewing, when eating sweet foods such as ice cream or cold foods, or when eating hot foods.


Many also visit because their teeth feel sensitive when brushing, or because their gums bleed.
These are common types of toothache that people may experience in everyday life. Today, I will explain their causes and possible solutions in detail.


The most common cause of toothache when eating sweet or cold foods is tooth decay, also known as dental caries.
As the tooth decays, the enamel that protects it and the dentin underneath may become damaged or gradually dissolve due to caries, making the nerve more easily stimulated.

There are nerves inside our teeth that detect temperature.
That is why we feel that something is “cold” when we eat cold food and “hot” when we eat hot food.


However, when the protective layer of a tooth is damaged by decay, temperature stimuli are transmitted to the nerve more quickly and intensely, causing a sharp or sensitive pain.



Dentists call this pulpitis.
In simple terms, it can be understood as a condition in which the tooth nerve becomes inflamed.
Pulpitis may appear temporarily and then go away, or it may continue to progress.


For example, if a tooth feels sharp or sensitive when it comes into contact with ice or cold water, but the sensation quickly disappears within a few seconds, the symptoms are likely to be mild.
In such cases, the condition may improve with treatment for tooth decay or a simple procedure.


However, if the toothache gradually worsens and pain occurs not only with cold foods but also with hot foods, the inflammation of the nerve may be progressing deeper.
In particular, if tapping the tooth causes pain or it feels uncomfortable whenever you chew, there is a high possibility that root canal treatment may be necessary.


Inflammation can also develop outside the root of a tooth.
In such cases, simple treatment for tooth decay alone will not resolve the problem, so the inflammation must be removed through root canal treatment.


Sometimes, people experience pain in several upper molars even though they do not have tooth decay.
In such cases, it is important to check whether they recently had a severe cold or have chronic sinusitis.


The roots of our upper molars are located very close to a space called the maxillary sinus, which is situated beside the nose.
If inflammation develops in this area due to a cold, sinusitis, or another cause, the molars may feel painful when chewing.


If a dental examination shows that there is no problem with the teeth, receiving treatment for sinusitis or rhinitis from an ear, nose, and throat specialist rather than a dentist may be the solution.
There are various causes of toothache, but the most common are tooth decay and periodontal disease. Visiting a dentist early for a diagnosis and receiving appropriate treatment is the best way to avoid complicated treatment.
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