AI-translated archive post

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?!

Uline Dental Clinic (Gangnam Station Branch) · 연세유라인치과의원 · April 2, 2026

송파구치과 - 이 시림, 그냥 넘기면 안 된다?! ​ Hello. I’m Shin Seung-hwan, chief director of Yonsei Uline Dental Clinic, Garak Branch, located near Garak Market Station in Garak-dong, Songpa-gu. On...

AI translation notice

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: Uline Dental Clinic (Gangnam Station Branch)

Original post date: April 2, 2026

Translated at: April 19, 2026 at 2:02 PM

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

송파구치과 - 이 시림, 그냥 넘기면 안 된다?!

Hello. I’m Shin Seung-hwan, chief director of Yonsei Uline Dental Clinic, Garak Branch, located near Garak Market Station in Garak-dong, Songpa-gu.

One of the discomforts patients complain about most often at the dental clinic is the symptom of “teeth being sensitive.”

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 1

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 2

Some people feel sensitivity when brushing their teeth, eating cold foods,

or even just by breathing.

This sensitive feeling can be more than a simple inconvenience;

it may be an important sign about the condition of your teeth.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 3

Today, I’ll organize the reasons why teeth become sensitive

and the treatment directions according to each cause.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 4

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 5

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 6

First of all, the symptom of sensitivity itself can be a somewhat normal reaction.

For example, if you eat ice cream or drink cold water

and feel a brief sharp sensation that disappears within a few seconds,

it can be considered a normal sensitivity response.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 7

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 8

However, if pain lasts a long time after it becomes sensitive,

or if it feels strong,

there is a high chance that it is more than simple sensitivity

and that treatment is needed.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 9

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 10

One of the most common causes is tooth decay.

Cavities begin in the outermost layer of the tooth, the enamel.

At this stage, people often hardly feel any pain or sensitivity.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 11

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 12

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 13

But as the cavity gets deeper and passes through the enamel

into the dentin, the situation changes.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 14

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 15

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 16

Because dentin has tiny channels connected to the nerves inside the tooth,

from this stage onward the tooth may react sensitively to cold foods

or sweet foods, causing sensitivity.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 17

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 18

In this case, if it is early, the cavity area is removed

and properly restored with treatment, and over time

the sensitivity often gradually eases.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 19

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 20

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 21

However, if the pain lasts a long time or is severe,

it may already have progressed to inflammation in the nerve.

In such cases, treatment may not end with simple cavity treatment

and root canal treatment may be necessary.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 22

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 23

Next, another commonly confused cause is cervical abrasion.

Many people think it is caused by brushing too hard side to side,

but more than that, abnormal force applied to the teeth,

that is, traumatic occlusion, is a bigger cause.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 24

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 25

If you clench your teeth, grind them,

or often chew tough and hard foods,

lateral force is repeatedly applied to the teeth.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 26

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 27

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 28

At this time, stress concentrates on a specific part of the tooth,

causing the tooth to chip away as if it has cracked microscopically,

which is called a cervical fracture.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 29

This area appears as a sharply worn notch,

and as the enamel is damaged and the inner tissue is exposed,

sensitivity occurs. If poor brushing habits are added here,

abrasion can also progress, and the symptoms may become more severe.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 30

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 31

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 32

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 33

Another cause is damage to the chewing surface of the tooth.

When chewing hard food, part of the tooth may break off

or wear down, or even if it looks fine on the outside,

fine cracks may form inside.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 34

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 35

This is called a crack, and through these tiny gaps,

stimuli can be transmitted inward,

causing sensitivity.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 36

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 37

Lastly, gum disease is also an important cause.

As people age, the gums naturally recede,

and when that happens, the tooth roots become exposed.

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 38

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 39

Songpa-gu Dental Clinic - Tooth Sensitivity: You Shouldn’t Just Brush It Off?! image 40

The crown part of the tooth is protected by hard enamel,

but the root part is covered by relatively thin tissue,

so it is much more sensitive to external stimuli. If gum disease is also

present and the gums have receded further,

overall sensitivity will appear.

In summary, tooth sensitivity is not a simple issue,

but can occur due to various causes such as cavities,

cervical fractures, tooth cracks, and gum disease.

Therefore, even if the symptoms seem similar,

the same treatment should not be applied.

It is important to identify the exact cause and then provide

the appropriate treatment for it.

If sensitivity keeps recurring or gradually gets worse,

rather than simply putting up with it,

I recommend getting an accurate diagnosis.

In the early stages, it may be resolved with simple treatment,

but the longer it is left untreated, the greater the scope of treatment may become.

This has been Yonsei Uline Dental Clinic, Garak Branch, located in Garak-dong, Songpa-gu.

Continue browsing

Keep exploring this clinic's public source trail

Return to the source archive for more translated posts, or open the Korean clinic profile to compare other public channels.