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White Teeth Change Your Smile and Change the Impression You Give

LUCID Dental Clinic · 루시드치과 · May 13, 2025

​ Hello, this is Lucid Dental Clinic. When meeting someone for the first time, there is an impression that comes across before their face does. That is their smile. ​ And one of th...

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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: LUCID Dental Clinic

Original post date: May 13, 2025

Translated at: April 20, 2026 at 4:31 PM

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

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Hello, this is Lucid Dental Clinic.

When meeting someone for the first time, there is an impression that comes across before their face does. That is their smile.

And one of the important elements that make up that smile is the color of the teeth. When teeth are white and clean, the impression looks much neater and can give a sense of trust without saying a word.

On the other hand, even teeth that are straight and healthy can make the impression seem dull if they are yellowish or stained. Tooth color can naturally darken with age, and it can also change due to strong-pigmented drinks such as coffee, black tea, and wine, as well as smoking, dietary habits, and other factors.

As such, tooth color that has gradually changed in daily life may be difficult to restore to its original state with brushing alone.

That is why teeth whitening is being considered as one way to regain a bright smile. Teeth whitening is a non-invasive method that improves only the color while preserving your natural teeth, making it a relatively simple option for managing mild discoloration to moderate staining.

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What Is Teeth Whitening?

Teeth whitening is one of the dental treatments that breaks down pigments deposited on the surface or inside the teeth to improve them to a lighter shade than their original color.

In general, whitening agents such as hydrogen peroxide or carbamide peroxide are used, and the appropriate concentration and method may be adjusted depending on the individual's tooth condition.

Teeth whitening is divided into two methods.

  1. Professional whitening This is a short-term method performed at the dental clinic, often using a special light as well, and brightness can be adjusted with one or two visits.

  2. At-home whitening After making a custom tray, whitening agents are used at home for a set period of time. The effects appear relatively slowly, but it has the advantage of being adjustable according to the desired level.

The two methods can be used together, or depending on the situation, can be performed separately.

However, the same result does not appear for everyone, and there may be differences depending on each person's tooth structure, enamel thickness, and lifestyle habits.

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Teeth Whitening Self-Check Test

If any of the following apply to you, you may want to think about teeth whitening.

▪ I often drink dark-pigmented beverages such as coffee, black tea, or wine. ▪ My teeth have become duller and yellower than before. ▪ When I look in the mirror, I have felt that the color of my teeth affects my impression. ▪ I have an important schedule coming up, such as a wedding, interview, or photo shoot, so I am paying attention to my smile. ▪ I smoke, and it is affecting the color of my teeth. ▪ My teeth are fairly straight, but I have been told they make my impression seem dull because of their color. ▪ Whitening toothpaste or home care products did not produce satisfactory improvement. ▪ I tend to keep my lips closed or hide my teeth when smiling.

If three or more of the above apply to you, it may be helpful to check your tooth condition with a professional.

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Teeth Whitening Q&A

Q. Who can benefit from teeth whitening? A. It can be considered when there is external staining or when natural discoloration due to age is a concern.

Q. Can whitening cause sensitivity? A. Some people may experience temporary sensitivity during or immediately after whitening. This is a temporary reaction and in most cases it goes away within a short period of time.

Q. How long do the effects last? A. It varies depending on eating habits, oral hygiene, and other factors, but in general it can last for more than a year. The duration may be longer when regular care and lifestyle improvements are done together.

Q. Can the color become darker again? A. If you frequently consume foods that cause staining or continue smoking, the teeth may gradually darken again. Touch-up treatment may be considered if needed.

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Precautions After Whitening

▪ It is best to avoid foods and drinks that cause staining for 48 hours after whitening. ▪ Foods that are too hot or too cold may also cause temporary sensitivity. ▪ Smoking can reduce the whitening effect, so it is best to refrain from it. ▪ Using a soft-bristled toothbrush can also help reduce tooth wear.

Teeth whitening is one dental procedure that can preserve your own teeth while making your smile look brighter and more refined. However, it is not applicable to all tooth conditions, and it is essential to confirm whether it is suitable for your situation through proper diagnosis and consultation.

If you want a more confident smile, we recommend starting with a diagnosis and consultation.

White Teeth Change Your Smile and Change the Impression You Give image 7 Lucid Dental Clinic 3rd–4th Floors, Coway Building, 606 Nonhyeon-ro, Gangnam-gu, Seoul

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