> Excessive transverse ridges
Transverse ridges are a series of enamel ridges, which occur on the grinding surface of all horse's cheek teeth. There function is to cut up and break down forage for digestion. Occasionally the rows of teeth are not correctly aligned, harder areas of some teeth wear into softer areas of others, causing abnormally large ridges, with sharp enamel points.
These excessive ridges need to be reduced back to normal levels as they can restrict both the lateral movement during the chewing cycle, and caudal rostal movement of the lower jaw which your horse needs to flex and work on the bit. Pressure can also occur to the temporomandibular joint, which articulates the lower jaw. Any soreness or damage here can affect riding as well as feeding.