Equine odontoclastic tooth resorption and hypercementosis affecting all cheek teeth in two horses: Clinical and histopathological findings

Abstract

Summary This report describes the clinical presentation and histopathological findings of two horses with equine odontoclastic tooth resorption and hypercementosis (EOTRH) affecting all cheek teeth. Equine odontoclastic tooth resorption and hypercementosis is a well documented condition known to affect the incisors, canines and occasionally the premolars in horses. At this time there have been no documented cases of EORTH affecting all cheek teeth described in the peer reviewed literature. This paper documents the first reported cases of EOTRH affecting the cheek teeth in one horse in the United States and one from Germany.

Radiological prevalence of equine odontoclastic tooth resorption and hypercementosis

“…Two very recent studies have shown that EOTRH is not exclusively affecting the incisor and canine teeth [7,29]. Equine canine teeth cannot always be fully evaluated using the standard radiographs for incisor teeth, because of their caudal position and long intra-alveolar part, especially in younger horses with a longer intra-alveolar aspect of these teeth and ponies with short interalveolar margins and small mouths.…”

Equine odontoclastic tooth resorption and hypercementosis (EOTRH): What do we know?

“…The authors of the accompanying paper hypothesise that the underlying cause of EOTRH may be due to the masticatory forces placed on the geriatric tooth of shorter root length (Schrock et al 2013;Moore et al 2016). This would be similar to the root resorption noted in people undergoing orthodontic treatment.…”

“…; Moore et al . ). This would be similar to the root resorption noted in people undergoing orthodontic treatment.…”

“…In this issue, Moore et al . (), in addition to proposing that EOTRH affects the cheek teeth as well as the incisors and canines, have reviewed the EOTRH literature. It is hoped that this wider, cross‐species literature review of tooth resorption is of interest to the reader.…”

“…However, it is informative to examine tooth resorption in other species, including laboratory animals, in an effort to better understand the pathophysiology in the horse and to guide further research efforts. In this issue, Moore et al (2016), in addition to proposing that EOTRH affects the cheek teeth as well as the incisors and canines, have reviewed the EOTRH literature. It is hoped that this wider, cross-species literature review of tooth resorption is of interest to the reader.…”