Abstract
Abstract Histological and radiographic examination of 23 ewe heads has revealed that mandibular osteopathy is a feature of the ovine dental abnormality syndrome described by Bruere et al.(3) The bone changes consisted of excessive irregular remodelling of bone with osteoporosis. Developmental faults were also demon-strated. The most dramatic of these were dentigerous cysts involving unerupted permanent incisors, although malposition-ing of permanent incisors was also observed. A histological feature of the excessive incisor wear was chronic pulpitis, perhaps a. result of the rate of wear exceeding the rate at which protective secondary dentine could be de-posited in the pulp cavity. A number of nutritional deficiencies is known to cause gener-alised osteoporosis. Recognition of the osteopathy described here thus supports the clinical evidence of Bruere et al.(3) that a nutritional disorder could be a major factor in the pathogenesis of this syndrome.
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