Diagnosis and treatment of dynamic closed-mouth jaw locking in a dog

Frazho, Jean K.; Tano, Cheryl A.; Ferrell, Eric A.

doi:10.2460/javma.233.5.748

Cited by 9 publications

(10 citation statements)

References 15 publications

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“…Computed tomography (CT) is a reliable, and noninvasive procedure for evaluating different pathological lesions or diseases in the head region as compared to the traditional radiography (Frazho et al, 2008). Although, this modality has been used widely for describing the normal structure of head and other body regions in animals world (Morrow et al, 2000;Frazho et al), however, the combination of imaging techniques and stereological procedures has received little attention in veterinary practice.…”

Section: Introductionmentioning

confidence: 99%

Anatomy of the Skull of Saanen Goat. An anesthesiology and Stereology Approach

et al. 2021

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The Saanen goat is known as the greatest milk producer among small ruminat breeds. However, its morphometric features still remain unclear. Therefore, the present work aimed to investigate the functional anatomy of the upper and lower jaws as well as the volumetric properties of the male and female Saanen goat for clinical applications. The heads of 20 adult animals (10 males and 10 females) were included. Totally, 22 morphometric parameters were measured on three dimensional computed tomographic images using RadiAnt DICOM Viewer software and some parameters were measured on hot macerated sample. The mean volume of paranasal sinuses as well as conchal sinuses were estimated using stereological method. Based on the results, the differences between males and females were not significant (p>0.05) in all desired parameters.The frontal and lacrimal sinuses were the largest and smallest paranasal sinus in both sexes. Also, the dorsal and middle conchal sinuses were the largest and smallest ones, respectively. The common nasal meatus was the smallest and ventral meatus was the largest meatus in the nasal cavity.In conclusion, these findings provide a basic data that would be useful in blocking terminal branches of the cranial nerves in this breed for surgical purpose or teeth injuries treatment.

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Section: Introductionmentioning

confidence: 99%

Anatomy of the Skull of Saanen Goat. An anesthesiology and Stereology Approach

et al. 2021

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“…Fracture of the coronoid process or displacement of the process so that it lies against the zygomatic arch can result in inability of a dog or cat to open or close its mouth, necessitating coronoidectomy (Gatineau et al 2008;Frazho et al 2008;Hazewinkel et al 2018;Nutt et al 2018). The coronoid process of the mandible of human beings, dogs and cats is considerably larger, relative to the skull, than is the coronoid process of the mandible of equids (Barone 1986) and is, therefore, more apt to immobilise the mandible, with the mouth closed or open, when it becomes displaced from trauma or abnormal growth during development (Isberg et al 1987;Escuder i de la Torre et al 2001;Hazewinkel et al 2018).…”

Section: Discussionmentioning

confidence: 99%

Coronoidectomy as a treatment for mandibular immobility caused by fracture of the coronoid process in three horses

Magri

Schramme

Nottrott

et al. 2020

Equine Veterinary Education

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This report describes the history, clinical signs and treatment of three horses suffering from deviation and immobility of the mandible resulting from fracture of a coronoid process of the mandible.Deviation and immobility resulted from impingement of a callus between the temporal bone and zygomatic arch. Fracture of the coronoid process was identified by using radiography, ultrasonography, computed tomography or a combination of two or more of these imaging modalities. Osteoarthritis of the ipsilateral temporomandibular joint of two horses was identified. All horses were treated by excising the fractured coronoid process, and two were also treated by excising the diseased ipsilateral mandibular condyle. All horses were able to open their mouth more widely immediately after surgery. One horse experienced moderate post-operative haemorrhage, and all had severe shear mouth. Shear mouth was ameliorated gradually over many months by rasping dental overgrowths. Mandibular movement of all horses improved, allowing efficient mastication of feed. One horse was able to be used as a showjumper, one horse was sold at Thoroughbred yearling sales and was lost to follow-up, and one horse died from an unrelated gastrointestinal disease 10 months after mandibular coronoidectomy and condylectomy.

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“…The most remarkable weakness of radiography is the superimposition of bony structures and cavities that made it difficult to distinguish them from each other perfectly (Solano & Brawer, 2004 ). In addition, CT scan images can be manipulated by user to achieve the best contrast between adjacent soft and bony tissues (Frazho et al., 2008 ; Losonsky et al., 1997 ). Undoubtedly, a thorough theoretical working knowledge of the skull anatomy is needed before interpreting the CT scan images of the skull.…”

Section: Introductionmentioning

confidence: 99%

Applied anatomy of the skull in the Arabian horse: A computed tomographic, cross‐sectional, volumetric and morphometric study

Goodarzi

Zehtabvar

Tohidifar

2021

Veterinary Medicine & Sci

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This study was conducted to present a comprehensive and integrative computed tomography (CT) -anatomical cross sections atlas of skull, volumetric properties of the paranasal sinuses, and morphometric values for surface cranial nerves in the adult Arabian horse. Ten heads of Arabian horse breed were used. The different structures in the nasal, oral and cranial cavities were determined and labelled in the anatomical sections and their corresponding CT scan images. Three paranasal sinuses namely maxillary, conchofrontal and sphenopalatine sinuses were identified in the CT scan images.The caudal maxillary sinus was the largest paranasal sinus with 131.93 ± 7.67 cm 3 volume and the sphenopalatine sinus 13.3 ± 1.2 cm 3 volume was the smallest one. The infraorbital foramen was located 4.16 ± 0.18 cm and 4.70 ± 0.35 cm far away from the most rostral point of the facial crest and alveolar root, respectively. The mean distance between the mental foramen and most lateral incisive tooth was 3.12 ± 0.29 cm. These results including present CT scan-cross-sectional atlas, paranasal sinuses volume and morphometric properties would be applicable in practice for more precise diagnosis of head lesions and blocking the surface terminal branches of the cranial nerves during surgical operations in this valuable horse's breed.

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Diagnosis and treatment of dynamic closed-mouth jaw locking in a dog

Cited by 9 publications

References 15 publications

Anatomy of the Skull of Saanen Goat. An anesthesiology and Stereology Approach

Anatomy of the Skull of Saanen Goat. An anesthesiology and Stereology Approach

Coronoidectomy as a treatment for mandibular immobility caused by fracture of the coronoid process in three horses

Applied anatomy of the skull in the Arabian horse: A computed tomographic, cross‐sectional, volumetric and morphometric study

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