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If Cold Water Still Makes Your Teeth Hurt: Causes, Treatment, and Prevention of Tooth Sensitivity / Gangnam Leong Dental Clinic

Gangnam Leon Dental Clinic · 강남레옹치과의원 공식블로그 · March 21, 2026

Hello, this is Gangnam Leong Dental Clinic🙂 When you drink cold water, have you ever felt your teeth become sensitive in a way that feels different from before? If it is only a te...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: Gangnam Leon Dental Clinic

Original post date: March 21, 2026

Translated at: April 19, 2026 at 10:30 PM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

Hello, this is Gangnam Leong Dental Clinic🙂

When you drink cold water,

have you ever felt your teeth become sensitive in a way that feels different from before?

If it is only a temporary symptom, that is a relief,

but if it happens every time,

it may not be simple sensitivity and could be caused by oral health issues directly related to dental wear, early tooth decay, and similar problems.

In this post,

let’s look at why tooth sensitivity occurs, treatment methods, and prevention and management.

If Cold Water Still Makes Your Teeth Hurt: Causes, Treatment, and Prevention of Tooth Sensitivity / Gangnam Leong Dental Clinic image 1

Why teeth feel sensitive : The structure of the tooth

The reason teeth feel sensitive when drinking cold food or beverages is easy to understand by looking at the structure of the tooth.

A tooth is made up of the outer enamel, the inner dentin, and the central pulp (nerve) structure.

In a normal state, the enamel protects the tooth, but when the enamel wears down or the gums recede, the dentin becomes exposed.

Dentin has tiny tubes, so cold stimuli are quickly transmitted to the nerve, causing sensitivity.

In some cases, not only cold foods but also sweet foods, hot foods, and cold air can trigger a sensitive response.

If Cold Water Still Makes Your Teeth Hurt: Causes, Treatment, and Prevention of Tooth Sensitivity / Gangnam Leong Dental Clinic image 2

Main causes of tooth sensitivity

Situations such as dentin exposure, which cause tooth sensitivity, can happen for a variety of reasons.

✅ Cervical abrasion

This is a condition in which the boundary area between the tooth and gums wears into a V-shape.

It is often caused by strong brushing, using a hard toothbrush, or excessive bite forces such as teeth grinding/clenching.

✅ Gum recession

When the gums recede and the roots of the teeth become exposed, they become sensitive to external stimuli and sensitivity can occur. It is mainly related to periodontal disease or aging.

✅ Early signs of cavities

As cavities progress, the protective layers of the tooth are damaged, which can make the tooth sensitive to cold water. In the early stages, pain may be mild, but if left untreated, it can lead to severe toothache.

✅ Improper brushing habits

Even if it is not cervical abrasion, if you brush too hard or use a highly abrasive toothpaste, the tooth surface may wear down and sensitivity may occur.

✅ Tooth crack

Even when there is a tiny crack in the tooth that is not easily visible, cold stimuli can be transmitted to the nerve, causing sensitivity.

If Cold Water Still Makes Your Teeth Hurt: Causes, Treatment, and Prevention of Tooth Sensitivity / Gangnam Leong Dental Clinic image 3

Treatment for tooth sensitivity

Treatment methods vary depending on the different causes explained above.

Therefore, an accurate diagnosis comes first.

① Examination and detailed diagnosis

Based on the symptoms reported by the patient, the condition of the teeth and gums is examined to determine the actual cause.

② Customized treatment

👉 If it is cervical abrasion

Protect the exposed area with resin treatment

👉 If it is gum recession / periodontal disease

Scaling and gum treatment

👉 If it is cavities

Restorative treatment such as resin or inlay treatment after removing the cavity

👉 If it is tooth hypersensitivity

Recommend using toothpaste for sensitive teeth Fluoride application treatment

👉 If it is a tooth crack

Conservative treatment such as crown treatment/root canal treatment

If there are problems maintaining tooth protection because of teeth grinding/clenching habits, a night guard can be used, or additional sensitivity relief treatment may be performed if needed.

  • Application of a desensitizing agent

  • Fluoride coating

  • Protective resin treatment

③ Prevention and management education

To prevent recurrence after treatment, we explain lifestyle management methods.

  • Use a soft toothbrush
  • Proper brushing method
  • Use toothpaste for sensitive teeth
  • Regular dental checkups

If Cold Water Still Makes Your Teeth Hurt: Causes, Treatment, and Prevention of Tooth Sensitivity / Gangnam Leong Dental Clinic image 4

How to prevent and manage tooth sensitivity

With proper daily oral care habits, you can sufficiently prevent tooth sensitivity in everyday life.

✅ Proper brushing habits

Use a soft toothbrush and brush gently without applying too much force.

✅ Care after consuming acidic foods

Carbonated drinks or acidic foods can weaken the tooth surface, so rather than brushing right after consuming them, it is better to rinse with water.

✅ Regular dental checkups

Through regular dental checkups, cavities and gum disease can be detected early to help prevent sensitivity symptoms.

If Cold Water Still Makes Your Teeth Hurt: Causes, Treatment, and Prevention of Tooth Sensitivity / Gangnam Leong Dental Clinic image 5

⚠️ In these cases, dental treatment is necessary!

If any of the following apply, it is best to get a dental checkup as soon as possible.

❗ If sensitivity symptoms are gradually getting worse

❗ If there is pain even with hot foods

❗ If strong pain is felt in a specific tooth

❗ If there is pain even without any special stimulus

These symptoms may be a sign not of simple sensitivity, but of cavities, tooth cracks, or gum disease.

Today, we looked at the causes, treatment, and management of tooth sensitivity.

Feeling tooth sensitivity when drinking cold water is something many people experience. However, if the symptom repeats and gradually worsens, it may be a warning sign of a dental health problem.

We recommend identifying the exact cause and improving the symptom through appropriate action, prevention, and management.

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