Scientific Journal

Scientific Journal of the Hellenic Companion Animal Veterinary Society (HCAVS)


Dentigerous cysts of the right and left first mandibular premolar in a young dog

Lorida O. DVM, PhD Candidate, Companion Animal Clinic, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki,
Barkoulis A. DVM, MSc student, Companion Animal Clinic, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki,
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
Maragos G. DVM, Private Practitioner


The aim of this study was to present the diagnosis and treatment of bilateral dentigerous cysts of the 1st mandibular premolars (305, 405), in a young dog.

Clinical case

A 1.5-year-old intact male border collie, presented for a 2 x 1 cm gingival enlargement at 406 area, and absence of 305 and 405. CT-scan and intraoral x-rays revealed extensive bone loss, from 404 up to 406, mild bone loss at 305, impacted 305, 405, and a bilateral dentigerous cyst was diagnosed. Surgical extractions of 404, 405, 406, and 305 were performed encapsulated cyst was removed and the bone defect was scraped, filled with an allogenic bone graft, and sutured.


10 days postoperatively, a traumatic incident resulted in wound dehiscence, which healed by second intention, with the implementation of medical- grade honey. Radiologic examination two months postoperatively indicated bone growth at the cyst sites and 1.5 years postoperatively, the dog is completely healthy.


Dentigerous cysts are surrounded by an epithelial capsule and form around impacted teeth, most frequently the first mandibular premolars. CT-scan and intraoral radiographs are important diagnostic tools. Treatment includes the extraction of affected teeth, excision of the cyst capsule, and bone grafting in cases of extensive bone loss.


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