1. بسم الله الرحمن الرحیم

2. Case presentation

5. 10-year-old female painless swelling left perimandibular area Firm three months No palpable neck lymphnode No history of medical conditions Extraoral findings

6. Case presentation Intraoral examination buccal and lingual expansion Healthy normal mucosa

7. Case presentation

9. extensive unilocular and radiolucent lesion left mandibular body from the canine to the first molar 3.6 cm by 2.3 cm second premolar impaction adjacent teeth Root Resorption buccal and lingual expansion

11. Differential diagnosis

12. Odontogenic cysts (developmental/inflammatory) Odontogenic tumors Bone pathology

13. Odontogenic cysts Dentigerous OKC COC Radicular

14. Odontogenic tumors Unicystic ameloblastoma Odontoma Ameloblastic fibroma Ameloblastic fibro_odontoma Odonto ameloblastoma CEOT AOT

15. Bone pathology CGCG Simple bone cyst ABC Fibrous dysplasia Cemento_osseous Dysplasia OF

16. AND FINALLY…

17. Dentigerous cyst OKC AOT Unicystic ameloblastoma solid/multicystic ameloblastoma

18. pathology

20. Dx solid/multicystic ameloblastoma

21. AMELOBLASTOMA benign neoplasm of odontogenic epithelial origin 1) solid/ multicystic (86% of cases); 2) unicystic (13% of cases); 3) peripheral (1% of cases)

22. origin remnants of the dental lamina enamel organ epithelial lining of odontogenic cyst basal cells of the oral mucosa

23. MULTI CYSTIC AMELOBLASTOMA 10 to 19 posterior of the mandible painless swelling multi locular/uni locular impact 3 rd molar

24. Tx based on the lesion clinical type (solid/multicystic, unicystic, peripheral) location /size / age simple bone curettage to segmental resection

25. Thanks … zahra amiri elaheh ansari