1. Jaw Cysts
1.1. True Cysts
1.1.1. Inflammatory
1.1.1.1. Radicular cyst
1.1.1.1.1. Non-vital tooth
1.1.1.2. Inflammatory collateral cyst
1.1.1.2.1. Buccal bifurcation/paradental cyst
1.1.2. Developmental
1.1.2.1. Odontogenic
1.1.2.1.1. OKC
1.1.2.1.2. Orthokeratinized odontogenic Cyst
1.1.2.1.3. Dentigerous cyst
1.1.2.1.4. Eruption cyst
1.1.2.1.5. Glandular Odontogenic Cyst
1.1.2.1.6. Calcifying Odontogenic Cyst (Gorlin Cyst)
1.1.2.1.7. Developmental Lateral Periodontal Cyst
1.1.2.1.8. Gingival Cyst of adults
1.1.2.1.9. Gingival Cyst of infants
1.1.2.2. Non-odontogenic
1.1.2.2.1. Palatal Cyst of the Newborn
1.1.2.2.2. Nasopalatine Duct Cyst
1.2. Pseudocysts
1.2.1. Solitary Bone Cyst
1.2.1.1. TRaumatic Bone Cyst, Simple Bone Cyst
1.2.1.1.1. Empty or fluid-containing bone cavity
1.2.2. Aneurysmal Bone Cyst
1.2.2.1. Intraosseous blood-blood-filled spaces surrounded by fibrous CT & reactive bone
1.2.2.1.1. Primary or w/ tumors
1.2.3. Stafne Bone Cyst
2. Soft Tissue Cyst
2.1. Teratomas
2.1.1. Dermoid Cyst
2.1.1.1. Simpler incomplete form of teratogenic contains ectodermal & mesodermal
2.1.1.1.1. Midline of floor of mouth
2.1.2. Epidermoid Cyst
2.1.2.1. Simplest form of teratogenic contains ectodermal only
2.1.2.1.1. Lined by epidermis-like epithelium
2.2. Lymphoepithelial (branchial) Cyst
2.2.1. Origin: remnants of branchial arches mainly 2nd then 1st, 3rd & 4th or salivary gland epi. entrapped in lymph nodes
2.2.1.1. Children & young adults
2.2.1.1.1. Precedes it upper respiratory infection
2.3. ThThyroglossal Duct Cyst
2.3.1. True cyst
2.3.1.1. Origin: persistent thyroglossal duct
2.3.1.1.1. Stimulus: inflammation, retention of secretions or familial occurrence