These motions would account for the observed tooth wear and a more solidly constructed skull than modeled by Weishampel.
Caused either by erosion (dental), abrasion or attrition, tooth wear had been found to become more prevalent as a person ages.
At the least, they will mechanically protect the teeth from pathologic tooth wear associated with bruxism.
It prevents the horse from chewing side to side freely which causes incorrect and excessive tooth wear.
Bruxism is not the only cause of tooth wear.
Older belts have trapezoid shaped teeth leading to high rates of tooth wear.
A common source of this type of tooth wear is excessive force when using a toothbrush.
More recently direct bonded dental composite has been used, especially in when restoring anterior tooth wear.
This allows a very rough estimate of a horse's age, although diet and veterinary care can also affect the rate of tooth wear.
The teeth were multi-cusped, and tooth wear shows that Eudimorphodon was able to crush or chew its food to some degree.