Department of Anatomy, Physiology and Human Biology, International Research Collaborative - Oral Health and Equity, the University of Western Australia, Nedlands, Western Australia, Australia.
School of Population and Global Health, the University of Western Australia, Nedlands, Western Australia, Australia.
Equine Vet J. 2019 Sep;51(5):617-624. doi: 10.1111/evj.13084. Epub 2019 Mar 10.
Peripheral caries may cause significant oral pain and pathology and is very prevalent within the Western Australia horse population. Associations with periodontal disease have been indicated; however, further work is needed to assess the anatomical and histological aspects of the conditions, to better understand the pathophysiology.
To assess the anatomical and histopathological changes associated with equine cheek teeth peripheral caries and disease of the periodontium to better understand the pathogenesis and any association between the conditions.
Cross-sectional epidemiological and histological study.
A survey of 500 Western Australia horses was performed to assess the prevalence of peripheral caries and associations with other dental pathologies within the Western Australia horse population. Histopathological assessment was also performed on four extracted cheek teeth affected by peripheral caries and on three interdental areas from an abattoir specimen affected by peripheral caries and interdental feed accumulation.
There was a significant association between peripheral caries and cheek teeth interdental feed accumulation and gingival recession. This association was significantly stronger in the mandibular cheek teeth than the maxillary cheek teeth and also in horses with moderate or severe peripheral caries compared to horses with mild peripheral caries. Histopathological examination found caries lesions consistent with those found in humans above the gingival margin. Sub-gingivally, however, the cementum and periodontal structures were normal. In the samples with concurrent peripheral caries and deep feed-pocketing, there was significant gingival recession; however, only mild or no histopathological changes occurred in the gingiva.
Small sample size for histopathological assessment.
Horses with peripheral caries, and in particular, horses with mandibular cheek teeth with peripheral caries are significantly more likely to also be affected by disease of the periodontium than horses without peripheral caries.
外周性龋齿可能导致显著的口腔疼痛和病理学，在西澳大利亚州的马群中非常普遍。牙周病有一定的关联性；然而，需要进一步的工作来评估这些情况的解剖学和组织学方面，以更好地了解病理生理学。
评估与马颊齿外周性龋齿和牙周疾病相关的解剖和组织病理学变化，以更好地了解发病机制和这些疾病之间的任何关联。
横断面流行病学和组织学研究。
对 500 匹西澳大利亚州的马进行了调查，以评估外周性龋齿的流行情况以及在西澳大利亚州马群中与其他牙齿病理学的关联。还对四颗受外周性龋齿影响的颊齿和三个来自受外周性龋齿和齿间饲料堆积影响的屠宰场标本的齿间区域进行了组织病理学评估。
外周性龋齿与颊齿齿间饲料堆积和牙龈退缩之间存在显著关联。这种关联在下颌颊齿中比上颌颊齿更为显著，在中度或重度外周性龋齿的马中比轻度外周性龋齿的马更为显著。组织病理学检查发现了与人类龈缘以上发现的龋齿病变一致的病变。然而，在龈下，牙骨质和牙周结构是正常的。在同时存在外周性龋齿和深饲料袋的样本中，有明显的牙龈退缩；然而，只有轻度或没有组织病理学变化发生在牙龈。
组织病理学评估的样本量小。
患有外周性龋齿的马，特别是下颌颊齿患有外周性龋齿的马，比没有外周性龋齿的马更容易受到牙周病的影响。
