1. Cleft palate
  2. Malocclusion (Class II, Class III, Lateral crossbite)
  3. Open bite
  4. Tongue tied which may interfere with speech, breathing, swallowing and eating
  5. Missing of four anterior/posterior (front teeth/molar teeth)
  6. Complete upper or lower denture
  7. Impacted tooth/teeth
  8. Facial asymmetry
  9. Wearing of orthodontic brackets or any orthodontic appliances