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Cysts of the jaws

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Cysts of the jaws

  1. 1. Cysts of the JawsClassification / epidemiology
  2. 2. WHO – modified • True cysts “epithelial lined cysts” 1-developmental A-odontogenic B-nonodontogenic 2-inflammatory cysts • Pseudocysts “non epithelial lined cysts”
  3. 3. Based on origin • Odontoginic rests 1-Cysts of rest of malasses 2-Reduced of enamel epithelium 3-Rests of Dental lameina • Non odontogenic rests 1-Remnant of nasopalatine duct
  4. 4. Developmental 1-odontogenic cysts • Gingival cyst of infant • Odontogenic keratocyst • Dentigerous cyst • Eruption cyst • Lateral periodontal cyst • Gingival cyst of adult • Glandular odontogenic cyst • Calcifying odontogenic cyst
  5. 5. Developmental 2-non odontogenic cyst • Nasopalatine cyst • Nasolabial cyst • Globulomaxillary cyst • Median mandibular cyst
  6. 6. 3-Inflamatory cysts • Radicular: residual / lateral • Paradental “Paradental buccal bifurcation cyst”
  7. 7. Pseudocysts “non epithelial lined cysts” • Aneurismal bone cyst • Traumatic bone cyst • Static bone cyst “Stafne’s bone defect” • Focal osteoporotic bone marrow defect “hematopoietic”
  8. 8. Based on origin odontogenic cysts • Cysts of rest of malasses 1- radicular 2-risedual • Remnant of enamel epithelium 1-dentigerous cyst 2-eruption cyst • Dental lamina 1-keratocyst 2-lateral periodontal cyst 3-glandular odontogenic cyst
  9. 9. Based on origin non odontogenic cysts Remnant of nasopalatine duct 1-nasopalatine canal cyst
  10. 10. Epidemiology Radicular = any age, peak in 3rd-6th decade Dentigerous = young adult / 2nd-4th decade Nasopalatine = any age Keratocyst = any age, especially adults Lateral periodontal cyst = adults Paradental cyst = adults
  11. 11. Epidemiology Cawson 2002 Radicular =65-70% Dentigerouse =15-18% Nasopalatine =5-10% Keratocyst =3-5% Lateral periodontal cyst = %1> Paradental cyst %1>=
  12. 12. Epidemiology SHEAR 2006 Radicular =52.30% Dentigerouse =18.10% Nasopalatine =5-10% Rasidual =8% Keratocyst =11.60% Lateral periodontal cyst = %1> Paradental cyst =5.60%

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