Are you missing EOTRH?

Equine odontoclastic tooth resorption and hypercementosis (EOTRH) is a recently described disorder of incisor and canine teeth of older (usually over 15 years old) equids, variably causing resorptive and/or proliferative changes of all the calcified dental tissues and secondary periodontitis. Odontoclasts are multinucleated cells that cause the normal physiological resorption of the roots of the primary (deciduous) dentition prior to their exfoliation, but in this disease, they are abnormally activated and destroy the subclinical aspects of permanent cheek teeth. EOTRH shares some features with similar dental syndromes in cats (feline resorptive syndrome) and a resorptive dental disorder in humans, except that some equids also develop a high degree of peripheral hypercementosis with thickening of affected teeth which can mask and sometimes structurally compensate for the original resorptive lesions ...