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Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor)

Wonjin Dental Clinic · 원진치과의원 · February 9, 2026

Hello. This is Park Jae-hyung, Chief Director of Wonjin Dental Clinic. Yeoksam-dong Teeth Whitening I wish my teeth were just a little brighter... Yeoksam-dong Teeth Whitening You...

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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: Wonjin Dental Clinic

Original post date: February 9, 2026

Translated at: April 20, 2026 at 5:19 AM

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

Hello.

This is Park Jae-hyung, Chief Director of Wonjin Dental Clinic.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 1

Yeoksam-dong Teeth Whitening

I wish my teeth were just a little brighter...

Yeoksam-dong Teeth Whitening

You may have thought that at least once when looking in the mirror.

Recently, we have also seen a noticeable increase in consultations for teeth whitening in Yeoksam-dong.

But when we talk with patients about teeth whitening, there is something we always want to tell them.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 2

Yeoksam-dong Teeth Whitening

Yeoksam-dong teeth whitening is not something you should do unconditionally.

You need to first check whether it is a condition in which it can be done.

In today’s post,

| 1) 2 things you must check before whitening and 2) how the actual treatment is carried out |

I will explain them for you.

If you take just 3 minutes to read this,

when getting Yeoksam-dong teeth whitening,

you will get a sense of what to check

before receiving a consultation.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 3

Yeoksam-dong Teeth Whitening

In these cases, whitening should be approached cautiously Yeoksam-dong Teeth Whitening

  1. If you drink coffee or carbonated drinks frequently

Among people working in the Gangnam and Yeoksam area, there are many for whom three or four cups of coffee a day are part of daily life.

An early commute, overtime, and a cup of coffee between meetings often become almost a routine.

The problem is that these drinks

slowly weaken the

enamel that covers the surface of the teeth.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 4 Source: Human Tooth Structure Vector Diagram

Teeth are made up of the white enamel on the outside and the yellow dentin inside.

The healthier the enamel is,

the brighter the teeth naturally look.

But if whitening is performed when the enamel is already thin,

what happens?

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 5 A tooth with exposed dentin (medical image)

Source: dramarnathansdentalcare

Rather than making the teeth whiter,

the yellow dentin inside may become more noticeable,

and the teeth may actually look more yellow.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 6 Source: Depositphotos

  1. People with weak gums also need to be careful

The main ingredient in whitening agents is a high concentration of hydrogen peroxide.

It is effective at removing stains, but if it comes into contact with the gums, it can cause strong irritation.

If your gums are sensitive and easily swollen or bleed,

you may feel pain or a burning discomfort after teeth whitening.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 7 We carefully apply the blue protective material called a tooth dam (Dam)

(This is an example image to help explain the process ^^ )

That is why protecting the gums is very important during whitening procedures.

If this process is not sufficient,

even if the tooth color has brightened,

gum discomfort may remain for a long time.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 8

Yeoksam-dong Teeth Whitening

These people may benefit from whitening Yeoksam-dong Teeth Whitening

  1. If there are no cracks or damage on the tooth surface,

  2. If there is no gum inflammation,

  3. If the cause of staining is external factors such as coffee, wine, or tea.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 9

Yeoksam-dong Teeth Whitening

Especially among people working in Gangnam and Yeoksam,

there are many cases where there are no special problems with dental health,

but because they have frequent meetings or business appointments,

they are concerned about managing their impression.

In such cases, you can expect a natural improvement in tone within a moderate range.

| ※Today’s content explains criteria that can be used to judge whether treatment is necessary. Rather than deciding on treatment based on this alone, we recommend making the decision only after diagnosis and consultation with a medical professional. |

< Please also refer to the case below, which may help with understanding ↓ >

How is teeth whitening actually performed? Yeoksam-dong Teeth Whitening

First, let me explain the principle of teeth whitening.

Although teeth look smooth to the naked eye,

when viewed under a microscope,

they are made up of numerous column-like structures.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 10 Porous structure

As pigments become lodged between these columns,

the teeth become yellowish.

At this time, whitening treatment uses the principle that hydrogen peroxide breaks down these pigments.

Now, let’s look at the actual

Yeoksam-dong teeth whitening process together!

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 11

Before treatment, we check the current tooth color with a shade guide

and set a goal together for how much brighter to make it.

Rather than making the teeth purely white,

this is the process of finding the tone that suits you within a natural range.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 12 Top: 26.01.12 (before treatment) Bottom: 26.01.12 (after treatment) Treatment completed the same day

Compared with the beginning, you can see that the teeth have become noticeably brighter.

Immediately after the procedure, the teeth may look somewhat patchy.

This is a phenomenon that occurs as the tooth surface dries during the whitening process.

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 13 Porous structure

When teeth with a porous structure dry out, light reflection becomes stronger, which makes the white areas stand out more.

As the teeth reabsorb moisture during daily life,

they naturally return to a more even color, so there is no need to worry.^^

| ◈ In this case, treatment was completed on the same day. ◈ Treatment may vary by individual and side effects may occur, and these photos were used with the patient’s consent to help explain the treatment. - Individual differences in treatment: Treatment results may vary depending on the individual’s oral condition, cooperation, and other factors. - Treatment side effects: Temporary sensitivity or gum irritation may occur after teeth whitening. ◈ The before-and-after photos in this post were taken of the same person, at the same location, with the same angle and lighting conditions. |

Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 14 Yeoksam-dong Teeth Whitening: Be Sure to Check These 2 Things Before You Start (Written by a Doctor) image 15 Yeoksam-dong Teeth Whitening

Wonjin Dental Clinic’s treatment standards Yeoksam-dong Teeth Whitening

If you are considering Yeoksam-dong teeth whitening, rather than price or advertising,

please check whether the clinic

  1. first looks at the condition of your teeth, and
  2. explains options other than whitening.

We recommend using these two points as a standard to check whether it is the right place for you.

Wonjin Dental Clinic believes that healthy conditions must be secured first for results to last longer.

Sincerely,

Park Jae-hyung Chief Director, Wonjin Dental Clinic

< A column that may be helpful to read together ↓ >

< Inquiries for questions ? ↓ >

| 1. This post has been written in compliance with Article 56, Paragraphs 1 through 15 of the Medical Service Act. 2. Before-and-after treatment photos are uploaded to introduce the objective effects of the procedure to patients. ① The photos were taken at this medical institution ② The same person appears in the before-and-after photos, and the timing of the before-and-after shots is specified ③ The photos were taken under the same conditions ④ Side effects for each treatment are specified ◈ Before-and-after treatment photos may be posted only when the above conditions are met. |

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