Cosmetic dentistry

Tooth reshaping & teeth whitening

  • Tooth reshaping
  • Teeth whitening
  • Internal whitening

Tooth reshaping

"A procedure to move the teeth toward an even, natural form"

We smooth the tooth down and build up where it is lacking,
to improve the parts you are not satisfied with esthetically.

  • Chair time

    About 30 min

  • Anesthesia

    None

  • Visits

    1

  • Average duration

    1 day

  • Pain & bleeding

    None

Teeth that changed

See it for yourself.

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Before

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After

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After

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Before

After

Is one tooth uneven or pointed
compared with the others,
in a way you do not like?

When a tooth is angular, pointed or uneven,
it can be smoothed slightly to look softer and more regular.

The emphasis is on the tooth, not only on the reshaping,
so we look at function as well as appearance and work carefully.

Tooth reshaping,

for cases like these.

Who tooth reshaping is for

When a gap between the front teeth is the concern

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    BEFORE
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    AFTER

When the tooth shape is angular or uneven

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    BEFORE
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    AFTER

When a front tooth is chipped, or has discoloration that whitening does not resolve

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    BEFORE
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    AFTER

Teeth whitening

"Want whiter, brighter teeth? One-day in-office whitening."

Once teeth have discolored, brushing and mouthwash alone rarely bring the shade back.
One-day in-office whitening can lighten the shade within a short appointment.

  • Chair time

    About 1 hr 30 min

  • Anesthesia

    None

  • Visits

    1

  • Average duration

    1 day

  • Pain & bleeding

    None

On average people in their 20s and 30s fall in stage 2; from stage 3 the shade is on the darker side.
Staining comes mainly from foods such as coffee, curry and kimchi, and from smoking,
and teeth can also discolor through orthodontic treatment, aging and other factors.
Because brushing and mouthwash alone rarely bring a discolored tooth back,
we suggest whitening for people who want whiter, brighter teeth or who have heavy staining.

In a single day,

a visible change in shade.

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Before

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After

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Before

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After

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Before

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After

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Before

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After

Do yellowed teeth make you hold back
when you smile or speak?

Yellowed teeth can make a whole face read as darker.
People become conscious of it when smiling or talking, and hold back.

For everyday life and for occasions that matter, such as a wedding or an interview,
we will help you smile with more confidence with brighter, whiter teeth.

Redoing veneers,

for cases like these.

When whitening goes well, more than 70% of cases
can hold the result for two years without further treatment.

Even so, changing the habits that stain teeth
is what matters most in avoiding re-staining.

Teeth whitening - internal (non-vital) whitening

"Want white, healthy teeth? Internal whitening."

When a front tooth has discolored because the nerve inside it has died,
we complete root canal treatment, place a whitening agent inside the tooth and replace it at intervals,
to bring the tooth back toward its original color.

  • Chair time

    About 60 min

  • Anesthesia

    Local

  • Visits

    3 ~ 4

  • Average duration

    3 ~ 4 weeks

  • Pain & bleeding

    None

Internal whitening, before and after

Internal whitening

step by step

step 01

After root canal treatment is complete,
the inside of the tooth is cleaned out

step 02

A whitening agent is placed
inside the tooth

step 03

The tooth is sealed with a temporary filling
so the agent does not leak

D-day clinic information

D-DAY Contact

02.568.2877

Address

10F, Hwanam Building, 337 Teheran-ro, Gangnam-gu, Seoul (서울특별시 강남구 테헤란로 337 화남빌딩 10F) — in front of Exit 6, Seolleung Station

Clinic hours

  • Mon / Thu / Fri
    10:00 ~ 19:00
    Saturday
    10:00 ~ 14:00
  • Tue / Wed
    10:00 ~ 21:00
    Lunch break
    13:00 ~ 14:00

*Saturday: open through lunch, no lunch break.

*Closed on Sundays.

*Public holiday hours are announced separately.

Written and medically reviewed by

Kim Mu-jin Director, D-day Dental Clinic

This treatment page was written and medically reviewed by Dr. Kim Mu-jin, Director of D-day Dental Clinic. Dr. Kim is a board-certified specialist in Integrated Dentistry (통합치의학과) certified by the Ministry of Health and Welfare, holds a master's degree in Oral and Maxillofacial Surgery from Korea University, and served as Director of Esthetic Prosthodontics at Snow Dental Clinic.

  • Board-certified specialist in Integrated Dentistry, certified by the Ministry of Health and Welfare
  • Master's degree in Oral and Maxillofacial Surgery, Korea University
  • Full member, America Academy of Implant Dentistry
  • Full member, Korean Academy of Integrated Dentistry
  • Full member, Korean Academy of Oral and Maxillofacial Implantology
  • Full member, Korean Academy of Esthetic Dentistry
  • Full member, Korean Academy of Prosthodontics
Last reviewed 2026. 09. 03. · Written and medically reviewed by Dr. Kim Mu-jin, Director