Hello.
This is Apgujeong Yonsei Baro Dental Clinic, an orthodontic clinic in Gangnam.
Today, we would like to introduce a case of partial orthodontic treatment for rabbit teeth and an anterior crossbite in a woman in her 30s.

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Today’s case involves simple partial orthodontic treatment of the front teeth.
A woman in her 30s visited our clinic.

24.07
Her two front teeth were large, commonly referred to as “rabbit teeth.”
The lateral incisors on both sides and the left canine showed a crossbite, biting behind the lower teeth.
Black triangles were visible between the lower front teeth.
Black triangles are well known as a phenomenon that can appear after orthodontic treatment, but they can also be present from the beginning when the gums are thin and receded, as in this case.

24.07
Because there was no protrusion and the molar alignment and bite were good, we recommended partial orthodontic treatment of the front teeth.
However, to correct the canine crossbite, the appliances needed to be attached through the first premolars behind the canines.
We decided to use MTA mini-tube appliances and began by attaching the appliances and aligning the teeth.

24.12
This was five months after treatment began. The lower teeth had completed orthodontic treatment one month earlier, so the appliances were removed first.
Elastics were also used to correct the crossbite in the left canine area.
Then, in January 2025, the appliances were removed after six months of treatment.

25.01
These are the before-and-after comparison photos.
The left side shows the teeth before treatment, and the right side shows them after treatment.

The black triangles between the lower front teeth disappeared during alignment after interproximal reduction.

The canine and lateral incisor that had been biting in reverse no longer showed a crossbite, resulting in a good bite.

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This shows the teeth with the retainers in place.

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If the molar bite is good and there is no protrusion, partial orthodontic treatment of the front teeth completed within six months can also produce a good result.
Summary of this treatment
Can rabbit teeth also be treated with partial orthodontics?
If the molar bite is normal and there is no protruding mouth, some cases can be sufficiently improved with partial orthodontic treatment of the front teeth alone.
Can an anterior crossbite also be treated with partial orthodontics?
If the crossbite is limited to the front teeth and canine areas, it may be treatable with partial orthodontic treatment.
Can black triangles disappear?
It depends on the cause, but in some cases they can improve through interproximal reduction (IPR) and tooth alignment.
How long does partial orthodontic treatment take?
It varies depending on the case, but relatively simple cases may be completed in approximately six months.
Are retainers really necessary?
Yes. Wearing retainers after partial orthodontic treatment is also very important, and proper maintenance is essential for long-term stability.

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