Cleft Lip Alveolus

4-month-old infant with a bilateral cleft lip alveolus. The palate is not involved. But both halves of the upper lip and alveoli on the right and on the left of the midline are interrupted laterally to the midline: Two lateral parts on the right and on the left and a vestigial midline part of the upper lip are recognizable. At the left angle of the mouth the lateral part of the left alveolus is visible, and in the midline, the premaxillary; the latter has grown asymmetrically during pregnancy, and its growth has not been inhibited in the anterior direction; therefore, its alveolus is not in line with the lateral alveoli. The floor of the nose has not been formed in its anterior part.