Lingual braces are useful for dental mouth convexity and not for bony mouth convexity.
There are two main types of mouth convexity, dental mouth convexity and bony mouth convexity. Lingual braces are a kind of braces, the advantage is that they are well hidden, and there is no difference between the treatment effect and conventional braces. If it is a dental convexity, it is useful because it can improve the convexity of the mouth by wearing lingual braces to straighten the teeth.
However, in the case of a bony convex mouth without protruding teeth, orthognathic surgery is required to improve the convexity of the mouth, and wearing lingual braces will not be effective.
It is not possible to generalize whether lingual braces are useful for a convex mouth, and it needs to be judged in the context of the individual’s situation. It is recommended that you consult a doctor for a relevant examination before choosing the appropriate treatment.