*Forehead and chin must be on the same plane.
*These sequences show the frontal region that can be prominent or shortened.*Nasal bone should be present, the nose and its curvature must be very clear.
*Nose should project beyond plane of forehead and chin.
*The top of ear should be at the level of orbit.
*The upper and lower lips, the primary palate, and the secondary palate should be visible. The primary palate includes the anterior portion of the alveolar ridge with four incisor teeth.The secondary palate consists of the remaining hard palate and the soft palate.
