Böhmer Christine, Böhmer Estella
UMR 7179 CNRS/MNHN, Département Adaptations du Vivant, Muséum National D'Histoire Naturelle, CP 55, 57 rue Cuvier, 75005 Paris, France.
Chirurgische und Gynäkologische Kleintierklinik, Tierärztliche Fakultät, Ludwig-Maximilians-Universität München, Veterinärstr 13, 80539 München, Germany.
Vet Sci. 2020 Nov 20;7(4):182. doi: 10.3390/vetsci7040182.
Acquired dental problems are among the most frequently encountered diseases in pet rabbits. However, early symptoms are often overlooked because the affected animals first appear completely asymptomatic. Alterations from anatomical reference lines according to Böhmer and Crossley applied to standard skull X-ray images, have been shown to be indicative of tooth health problems in pet rabbits. Despite its proven usefulness, there are exceptions in which the anatomical reference lines appear not to be suitable for application. We addressed this issue by quantifying the cranial morphology of a large data set of pet rabbit patients (N = 80). The results of the morphometric analyses revealed considerable diversity in skull shape among the typical pet rabbits, but variance in only a few parameters influences the applicability of the anatomical reference lines. The most substantial parameter is the palatal angle. Specimens in which the anatomical reference lines could not be applied, have a rather large angle between the skull base and the palatal bone. We recommend to measure the palatal angle before applying the anatomical reference lines for objective interpretation of dental disease. Pet rabbits with a palatal angle larger than 18.8° are not strictly suitable for the successful application of the anatomical reference lines.
获得性牙齿问题是宠物兔最常遇到的疾病之一。然而，早期症状往往被忽视，因为患病动物最初看起来完全没有症状。根据Böhmer和Crossley的方法应用于标准颅骨X线图像的解剖参考线的改变，已被证明可指示宠物兔的牙齿健康问题。尽管其有用性已得到证实，但在某些情况下，解剖参考线似乎并不适用。我们通过量化大量宠物兔患者数据集（N = 80）的颅骨形态来解决这个问题。形态计量分析结果显示，典型宠物兔的头骨形状存在相当大的差异，但只有少数参数的变化会影响解剖参考线的适用性。最重要的参数是腭角。无法应用解剖参考线的标本，其颅底与腭骨之间的角度相当大。我们建议在应用解剖参考线之前测量腭角，以便对牙齿疾病进行客观解释。腭角大于18.8°的宠物兔不太适合成功应用解剖参考线。
