Characterisation of Equine Odontoclastic Tooth Resorption and Hypercementosis (EOTRH): A Comparative Study Using MicroCT and Radiography in Age-Matched Controls data.xlsx

Equine odontoclastic tooth resorption and hypercementosis (EOTRH) is an equine dental disease primarily affecting the incisors of horses over 15 years of age. In this study, 87 <i>in vivo</i> radiographs and 20 <i>ex vivo</i> microcomputed tomography (μCT) scans of incisors in age-matched controls were analysed. Radiographs showed that 03 incisors were more severely affected than the 01s in EOTRH. Radiographic score and age had a weak positive correlation. μCT demonstrated that EOTRH teeth had a lower pulp and enamel volume therefore lower pulp and enamel volume ratios relative to the whole tooth volume. Cementum and dentine volumes were more variable so their ratios were not different to control teeth.马破牙骨质性牙齿吸收与牙骨质增生症（Equine odontoclastic tooth resorption and hypercementosis, EOTRH）是一种主要累及15岁以上马匹门齿的马科牙科疾病。本研究共分析了87份体内（in vivo）门齿X光片，以及20份来自年龄匹配对照组的离体（ex vivo）门齿微型计算机断层扫描（μCT）图像。X光影像结果显示，EOTRH患牙中的03颗门齿病变程度重于01组门齿；X光评分与马匹年龄呈弱正相关。μCT扫描结果表明，与对照组相比，EOTRH患牙的牙髓体积与牙釉质体积均更低，因此牙髓体积与牙釉质体积占全牙体积的比例也更低；牙骨质与牙本质的体积变异程度更高，因此其占全牙体积的比例与对照组牙齿无显著差异。