펭하잉
Your front teeth are a bit large.
The canine area is slightly crooked due to a lack of space.
The doctor said it would be okay to do partial correction.
They said about six months would be enough.
Then, how do we handle the retention device?
Should the retention device attached to this be worn for a lifetime, like full orthodontic treatment?
치아교정, 얼마나 유지될까?
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