First, you should go to the hospital for a check-up to find out what kind of face is big and what kind of face is small. If it is caused by long-term unilateral eating, the big side is muscular and the small side is atrophied. If the size of both sides is not particularly obvious, you should be able to change your habits, but the faces on both sides are very different. It is a bit difficult to estimate the symmetry of both sides. After all, you have been eating while eating for years. Secondly, if you chew unilaterally, it is estimated that it will lead to bone.