JHL Illustrations

Fig 1 - Peristaltic motion of the tongue during breastfeeding.

Fig 2a - 3½ year old infant with open bite.

Fig 2b - Same infant demonstrating a tongue thrust.

Fig 2c - Adult with open bite.

Fig 2d - Open bite was a result of this tongue thrust

Fig 2e - Another adult with an open bite.

Fig 2f - Open bite was also a result of this tongue thrust.

Fig 3a - Typical arch form and palate width of prehistoric skull.

Fig 3b - Classical high palate and "V" arch from noxious habits.