• Rare intraosseous of intrabony development cyst
• Form besides vital tooth

Pathogenesis

• Dental lamina

Clinical

• No symptoms
• Erodes through bone into gingiva

Common site

• Lateral surface of root of vital tooth
• Mandibular premolar/canine region
• Size < 1cm diameter

Radiology

• Unilocular
• Round/oval
• Well defined
• Corticated
• ± Sclerotic margin

Histology

• Squamous/cuboidal epithelium
• 1-2 cell thick + focal thickenings

Management

• Enucleate cyst and retain healthy tooth

Complications

• Strong tendency to recur
• Sporadic bud-like proliferation after enucleation

Picture