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Dental Bonding for Gaps Between Front Teeth & Black Triangles | Gangnam, Seoul

연세정원치과의원 · 대치동 교정치과 연세정원치과 · 2026년 10월 19일

Looking for ways to address gaps between your front teeth or black triangles near the gumline? Dental bonding with resin may be an option for certain cases, depending on the condit...

Looking for ways to address gaps between your front teeth or black triangles near the gumline? Dental bonding with resin may be an option for certain cases, depending on the condition of your teeth and gums.

In this article, Yonsei JW Dental Clinic in Gangnam, Seoul, shares resin treatment cases involving spaces between front teeth and black triangles, along with considerations for treatment.

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Dental Bonding for Gaps, Yonsei JW Dental Clinic

Hello! This is Yonsei JW Dental Clinic in Gangnam, Seoul, Korea.

White, evenly aligned teeth play a very important role in shaping a person's overall appearance.

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Madonna

The world-famous singer and actress Madonna has a slight gap between her front teeth. She considered this gap a symbol of good luck. Madonna even strongly objected when a magazine edited her teeth using Photoshop, claiming that a four-leaf clover is rare, and just like that, the things that others don’t have can become unique and a point of charm. It seems that Madonna knew how to make what might be considered a flaw into a personal expression. Her slightly separated front teeth were not an issue for her at all.

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Ronaldo

Similarly, famous Brazilian soccer player Ronaldo also had a gap between his front teeth, but he underwent orthodontic treatment to close the space.

While cultural differences may apply, many female patients express that they are concerned about gaps between their teeth or visible spaces caused by receding gums. This can create an impression that the area looks hollow or that food might get stuck. As a result, it can become a source of self-consciousness when smiling.

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In the case of the patient above, they had previously filled the space between their front teeth with resin, but some of the filling broke, prompting them to visit the clinic. The patient did not want any treatment that involved shaving their teeth, and since they were comfortable with the previous resin treatment, we removed the old resin and reshaped it using new resin.

Unlike gaps between teeth, when the gums recede and create visible spaces between the teeth and gums, this is referred to as a "Black Triangle."

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Black Triangle

A Black Triangle occurs when the gum tissue retracts, leaving a space between the teeth that should have been filled with gum tissue. The dark area created in the mouth gives the appearance of a triangular black gap, which can be aesthetically problematic. This can also occur even after orthodontic treatment has been completed.

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Q-ray examination

In this case, the patient had broken resin in the gap between their front teeth, and the shade had darkened, so they requested a re-treatment with resin. While we were performing the treatment, the patient also wanted to address the space caused by the receding gum tissue. To properly diagnose the extent of the issue, we conducted a Q-ray examination.

Below, you can see the before and after comparison of the resin treatment. The patient requested to address the space caused by the slightly receded gum tissue between their front teeth, so we filled the gap as much as possible. We also explained the importance of proper gum care, such as flossing.

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Before / After

Although resin may discolor over time, it has several advantages: treatment can be done in a single visit, no tooth reduction is required, there’s no need for anesthesia, and there’s no pain involved. Additionally, compared to other prosthetic treatments, it is a more economical option. Furthermore, resin can be removed and replaced later, which makes it a highly flexible and attractive treatment when chosen for the right case.

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Dr. Ji Ho Ahn, a specialist at Yonsei JW Dental Clinic

Dr. Ji Ho Ahn, a specialist at Yonsei JW Dental Clinic, has extensive experience in resin treatments and delivers high-quality results, so I confidently recommend this treatment. :)

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📍 Yonsei JW Dental Clinic is located at 3F, 541 Dogok-ro, Gangnam-gu, Seoul, Korea. (06189)

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