Below are some of the lectures at the EVDF.
Dentigerous cysts are relatively common, often resulting in considerable bone loss in the rostral mandible or maxilla. Extraction of the unerupted tooth and enucleation of the entire cyst wall is definitive therapy in most instances. An allograft of demineralised bone matrix and cancellous bone is then normally placed in large defects to stimulate induction of new bone into the area. Incomplete excision may lead to recurrence of the cyst.
Several case reports on treatment of large dentigerous cysts by marsupialisation are available in human literature. To the authors knowledge this is the first case report comparing two different methods of treatment in a 5 year old boxer dog with bilateral mandibular dentigerous cysts. Treatment was staged due to concerns that bilateral surgery would lead to increased risk of pathological fracture of the rostral mandible. Therefore enucleation, bone grafting and closure was performed on the left while marsupialisation (with a view to completing enucleation and grafting at a later date) was performed on the right. Follow up CT imaging showed an increased rate of healing of the marsupialised cyst relative to the cyst which had received enucleation and a bone graft, resulting in more rapid resolution of the cyst on the right. This provides evidence that treatment of dentigerous cysts by marsupialisation is a valid technique and may be preferential to more invasive techniques.