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Figure 2 and 3: Oblique and lateral views of the left rostral mandible. Note that 305 was unerupted, and the presence of crown-like shaped dental material within left rostral mandible. These abnormalities would be easily missed and remain undiagnosed unless these intra oral radiographs (CR7 Vet, iM3) were taken during the COHAT
Basic procedures for dentigerous cyst were as follows:
305: One of the submitted and examined sections is composed of normal appearing, but incompletely formed tooth. Two soft tissue sections composed of dense collagenous stroma area present with one section containing a small segment of stratified epithelium.
306: The examined sections are composed of normal appearing tooth with variably irregular borders.
Dentigerous cyst lining: Multiple fragments are submitted and examined. These fragments are composed of a collagenous-type stroma containing variable hemorrhage and bordered by stratified epithelium.
305: Incompletely formed tooth with dentigerous cyst lining.
306: Tooth with peripheral resorption.
Dentigerous cyst: Fragmented dentigerous cyst.
As was determined clinically, there was a dentigerous cyst surrounding an incompletely formed 305 tooth. The tooth appears entirely excised, however I am unable to determine if there is complete excision of the cyst lining due to fragmentation. There is no evidence of significant inflammation within the examined sections. Tooth 306 contains peripheral areas of resorption, but is otherwise within normal limits. Odontogenic cysts are relatively rare in domestic animals, however various types, such as radicular cysts, dentigerous cysts, and keratocysts have been described in dogs. In this case, the cyst was determined to be a dentigerous cyst. Treatment of odontogenic cysts consists of surgical exposure and curettage of the cyst lining. The prognosis for cysts treated in this manner is good, with recurrence being uncommon.
Reference: Extensive Bilateral Odontogenic Cysts in the Mandible of a Dog. Vet Pathol 45:58 60 (2008). By Michelle L. Nobrega-Lee, DVM Diplomate, American College of Veterinary Pathologists.
During the five-month postoperative period, Rocket’s chewing behaviour was modified – no hard chew toys and no bones were given.
The owners reported no concerns in the last five months
Figure 8 and 9: Five months post operatively, intra oral dental radiographs (CR7 Vet, iM3) showed new bone formation at the site of the previous dentigerous cyst filled with Synergy bone grafting material.
Synergy is an advanced biosynthetic bone graft comprised of calcium phosphates that occur naturally in real bone. It is a biphasic combination of β-Tricalcium Phosphate (β -TCP) and Hydroxyapatite (HA).
These intelligent bioactive materials have the proven ability to stimulate bone formation.3 The β -TCP quickly releases calcium ions4 that cause clotting and release of platelet-de-rived growth factors. This cascade of mineral release and blood clotting provides the perfect environment for the stimulation of bone healing.
The cancellous-like porosity and surface structure encourage inward cell migration. As the β -TCP resorbs more space is created to support angiogenesis and bone formation1. The microparticles of HA provide a more long-lasting osteoconductive structure.
If you have any questions about how you can use Synergy in your veterinary practice, just ask them in the Comments section below.
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