Intraoral bisecting-angle technique view of the right maxilla in a dog with persistent deciduous right maxillary canine (504), second premolar (506), and third premolar (507) teeth. The permanent first premolar tooth is congenitally missing, and the deciduous second premolar and third premolar teeth lack permanent successors. In terms of their radiographic appearance, note that the deciduous teeth are less radiopaque, have longer, more slender, and divergent roots than their permanent counterparts. Also, take note of the morphologic similarities that deciduous teeth have to the permanent tooth located distal to it ("molarization"); in this view, the deciduous right maxillary third premolar tooth (507) has a similar appearance to that of the permanent right maxillary fourth premolar tooth (108). The periodontal ligament space in this younger patient is distinctly wider, and is a normal feature seen in developing dogs, and may decrease in width with age.

Contexts in source publication

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... that includes the tooth numbers and can be easily annotated may be useful for this purpose. Missing teeth, either congenitally missing or previously extracted (if immediately postoperative, this is referred to as a recently vacated tooth socket or sockets), persistent deciduous teeth (and whether the deciduous tooth has a permanent successor) (Fig. 6), anomalies of eruption (embedded/impacted teeth) or development (eg, craniomandibular osteopathy/CMO, periostitis ossificans), extra teeth (supernumerary), the size or shape of teeth (eg, fusion, gemination, concrescence, dilaceration, mandibular carnassial tooth malformation in the dog), are all described here (Fig. ...

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... and dogs, whereby the use of a size 0 PSP plate may be preferable. Intraoral paralleling technique view of the right mandibular premolar/ molar region in a Persian cat with a size 0 PSP plate (C). direction of the fracture line in minimally comminuted mandibular fractures) or to image the excised portion of tissue following jaw resection surgery (Fig. 16A), skull radiographs may still hold some diagnostic-medical ...

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... instances whereby the evaluation of a larger geographic region of the mandible is needed beyond the field of view that can be captured with the largest intraoral sensor or plate. Skull radiography is suitable from both an economics standpoint and to successfully screen for developmental diseases in the dog such as craniomandibular osteopathy/CMO (Fig. 16B) and periostitis ossificans (Fig. 17). The involvement of the TMJs and/or tympanic bullae in CMO, however, can only be formally evaluated by CT/CBCT (Fig. 16C). Fig. 16. Example of an extraoral view radiograph used for medicolegal documentation following a partial incisivectomy for the treatment of a peripheral odontogenic fibroma in a ...

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... sensor or plate. Skull radiography is suitable from both an economics standpoint and to successfully screen for developmental diseases in the dog such as craniomandibular osteopathy/CMO (Fig. 16B) and periostitis ossificans (Fig. 17). The involvement of the TMJs and/or tympanic bullae in CMO, however, can only be formally evaluated by CT/CBCT (Fig. 16C). Fig. 16. Example of an extraoral view radiograph used for medicolegal documentation following a partial incisivectomy for the treatment of a peripheral odontogenic fibroma in a dog (A). Skull radiograph of a 4-month-old female Corgi dog whereby skull radiographs, in combination with histopathology, were successfully used to diagnose ...

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... plate. Skull radiography is suitable from both an economics standpoint and to successfully screen for developmental diseases in the dog such as craniomandibular osteopathy/CMO (Fig. 16B) and periostitis ossificans (Fig. 17). The involvement of the TMJs and/or tympanic bullae in CMO, however, can only be formally evaluated by CT/CBCT (Fig. 16C). Fig. 16. Example of an extraoral view radiograph used for medicolegal documentation following a partial incisivectomy for the treatment of a peripheral odontogenic fibroma in a dog (A). Skull radiograph of a 4-month-old female Corgi dog whereby skull radiographs, in combination with histopathology, were successfully used to diagnose ...

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... the dog and cat, MRI is an infrequently used imaging modality for evaluating the soft tissues of the maxillofacial region, and examples of its uses include the assessment of salivary gland diseases, staging of oral tumors, metastatic lymph nodes screening, and early diagnosis of myopathies such as masticatory muscle myositis (Fig. 36A). 38,39 When used for imaging of the jaws, T1-and T2-weighted sequencing are most common. Long study acquisition times under general anesthesia, high cost, and differing needs of veterinary patients (ie, surgery of the TMJ is not commonly performed in dogs and cats), and the emergence of CBCT as the imaging method of choice for the ...

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... veterinary dentistry and oral surgery. In the human side of the specialty, the use of MRI has seen a sharp decline, as the 1990s boom of surgical TMJ intervention has waned and the popularity of CBCT has increased. MRI studies, however, remain the reference method for evaluation of the soft tissue (articular disc) internal structures of the TMJ (Fig. ...