The hyomandular gap is a rather slight dip of the lower jaw towards the upper jaw. Belongs to the group of gross anomalies of the facial contour. If this gap is not corrected, then with age the face will become more and more asymmetrical, the chin will lengthen and the nasolabial fold will recede. This results in a very rough, drooping look to the face. Therefore, you should always make sure that in childhood the child has the correct facial contour, there is no rough diving of the lower jaw, which over time can lead to the development of severe and aesthetically very ugly facial shapes and malocclusions. Hyomandabular (hyoid) fissure