Oikonomou A. DVM, MSc Student, Companion Animals Clinic, School of Veterinary Medicine, Aristotle University of Thessaloniki
Lorida O. DVM, PhD Candidate, Companion Animals Clinic, School of Veterinary Medicine, Aristotle University of Thessaloniki
Tsitsimpikou A. DVM
Patsikas M. DVM, MD, PhD, DiplECVD, Professor, Imaging Diagnostics Unit, School of Veterinary Medicine, Aristotle University of Thessaloniki
Papadimitriou S. DVM, DDS, PhD, Professor, Companion Animals Clinic, School of Veterinary Medicine, Aristotle University of Thessaloniki
Introduction
The aim of this study is to present three cases of dogs affected by temporomandibular joint ankylosis, and the surgical treatment applied.
Case Reports
Three adult dogs were admitted with gradually decreasing mouth opening. Two dogs had unknown history, and the third had a history of dog bite injury. Computed tomography revealed alteration of normal bone structure and irregular callous formation. Three-dimensional skull models were printed for all three patients. One of the owners declined any further treatment. Caudal mandibulectomy was performed, including the removal of the ramus of the mandible and obstructing callous in the two dogs.
Results
Both patients that received surgical treatment were able to open their mouth from the first day post operatively. Range of motion was gradually restored and, fifteen days later, feeding was normal. Mandibular drift was presented on both patients, however without impeding mastication.
Discussion
Temporomandibular joint ankylosis is usually caused by injury and results in great distress of the animal. Three-dimensional printed models may be used as a guide for surgical planning. In cases with extended callous formation, caudal mandibulectomy is the surgical technique of choice in order to restore function.
References
- Arzi B (2020) Temporomandibular Joint Ankylosis and Pseudoankylosis. In: Oral and Maxillofacial Surgery in Dogs and Cats. Verstraete FJM, Lommer MJ,
- Azri B ed. Elsevier, Missouri, pp. 377-382. Arzi B, Cissell DD, Verstraete FJM, Kass PH, DuRaine GD, Athanasiou KA (2013) Computed tomographic findings in dogs and cats with temporomandibular joint disorders: 58 cases (2006–2011). J Am Vet Med Assoc 1, 69–75.
- Huang YH, Lee B, Chuy JA, Goldschmidt SL (2022) 3D printing for surgical planning of canine oral and maxillofacial surgeries. 3D Printing in Medicine 8,17.
- Gemmill T (2008) Conditions of the temporomandibular joint in dogs and cats. In Practice 30, 36-43.
- Strøm PC, Arzi B, Cissell DD, Verstraete FJM (2016) Ankylosis and pseudoankylosis of the temporomandibular joint in 10 dogs (1993–2015). Vet Comp Orthop Traumatol 29, 409-15
