When a horse drops his head to nip grass or hay, the lower jaw slides forward to allow the incisors to contact fully.  The horse then lift his head sightly and chews by grinding his molars (cheek teeth) together from side to side.

In nature, this constant grinding motion wears the teeth out at about the same rate that they erupt.  This grinding motion causes sharp points on the inside lower teeth and outside upper teeth.

Sharp points on teeth can damage the cheeks and tongue, causing extreme pain and eating problems.

Sharp points on teeth can also restrict jaw motion, causing extreme problems as the years go on.  These problems manifest themselves in many ways, including:

1. ✦ Excessive Transverse Ridges (ETR)
   

2. ✦ Upper and lower Hooks
   

3. ✦ Upper and lower Ramps
   

4. ✦ Protuberant teeth
   

5. ✦ Fractured teeth
   

6. ✦ Shear Mouth, etc.
   

7. ✦ Tooth Loss
   

8. ✦ Periodontal Disease