Department of Clinical Sciences, College of Veterinary Medicine, 70727North Carolina State University, Raleigh, NC, USA.
Department of Exact Sciences, College of Agriculture Luiz de Queiroz, University of São Paulo, SP, Brazil.
J Vet Dent. 2021 Dec;38(4):199-207. doi: 10.1177/08987564211066571. Epub 2021 Dec 7.
Radiographic assessment of the temporomandibular joint in the domestic cat using conventional radiographic views can be challenging due to superimposition of overlying structures and the complex anatomy of the skull. The use of computed tomography, magnetic resonance imaging, and cone beam computed tomography to assess the temporomandibular joint in the cat has increased, but these modalities are not always available in general veterinary practices. Conventional radiography is still commonly used for first line assessment of the temporomandibular joint. The aim of this preliminary study was to determine optimal angle of obliquity of lateroventral-laterodorsal and laterorostral-laterocaudal (nose up lateral oblique) oblique radiographic views in the assessment of the temporomandibular joints in five feline mesaticephalic dry skulls. Visibility of the mandibular head, mandibular fossa, retroarticular process, and temporomandibular joint space were evaluated and scored by two veterinary radiologists. The results of this study identified that the dependent temporomandibular joint anatomy was best seen on the latero-10°-ventral-laterodorsal, latero-15°-ventral-laterodorsal, and latero-20°-ventral-laterodorsal, oblique views, and opposite lateral oblique views at these angulations may be helpful in characterization of this anatomy in clinical patients. The results also indicate that the laterorostral-laterocaudal (nose up lateral oblique) oblique view did not allow adequate discrimination of all TMJ anatomy at any angle, and is not recommended.
由于颅骨结构复杂，并且存在重叠的上层结构，因此使用传统 X 光片评估家猫的颞下颌关节具有一定的挑战性。尽管使用计算机断层扫描（CT）、磁共振成像（MRI）和锥形束 CT 技术来评估猫的颞下颌关节已经越来越普遍，但这些方法在一般兽医实践中并不总是可行的。目前，仍普遍使用传统 X 光片对颞下颌关节进行一线评估。本初步研究旨在确定在评估 5 个短头颅型干猫颅骨的颞下颌关节时，后-前斜位（头抬高侧位斜位）和后-前斜位（鼻侧抬高侧位斜位）的最佳斜角。由两位兽医放射科医生评估并对下颌骨头部、下颌窝、关节后突和颞下颌关节间隙的可见性进行评分。该研究的结果表明，在 10°-20°的后-斜位（头抬高侧位斜位）和后-斜位（头抬高侧位斜位）上，可观察到依赖的颞下颌关节解剖结构最佳，而在这些角度的对侧斜位上可能有助于在临床患者中对这种解剖结构进行特征描述。结果还表明，在任何角度上，后-前斜位（鼻侧抬高侧位斜位）都不能充分区分所有 TMJ 解剖结构，因此不建议使用。
