The slight deformity of a child can indeed be adjusted by improving living habits and relying on the help of the tongue, but it must be checked by a hospital and can only be done under the guidance of a doctor.

If you are an adult, I advise you not to think about it. Adults' bones, teeth and jaws are fully developed, and it is impossible to change them just because you lick them with your tongue. After a long time, your tongue will be painful and sensitive.

If you feel that your situation has affected your life and needs to be corrected, you should go to the hospital for formal treatment.

It may take a long time and bring you some inconvenience, but the effect is mostly guaranteed.

Postscript (same as postscript); Police sergeant

If it is not obvious, please don't care too much, so as not to bring unnecessary psychological pressure to yourself.