19.Diseases of the jaw ppt introduction.pptx

This ppt is useful to understand various diseases of the jaw

1. By resident – Salvatory M.Mlaga Facilitator: Dr Ngw’alali , Pathologist Diseases of the jaw

2. Important groups of diseases of the jaw Two broad categories: ODONTOGENIC LESIONS NON ODONTOGENIC TUMORS

3. Differential Diagnosis Approach to Jaw Lesions Cysts of the Jaws and Neck Odontogenic Tumors Benign Nonodontogenic Tumors Inflammatory Jaw Lesions Malignancies of the Jaws Metabolic and Genetic Diseases

4. Cysts of the Jaws and Neck Odontogenic Cysts Developmental Origin Dentigerous cyst Odontogenic keratocyst Lateral periodontal and botryoid odontogenic cyst Gingival cyst Glandular odontogenic cyst Calcifying odontogenic cyst Orthokeratinized odontogenic cyst Inflammatory Origin Radicular cyst Collateral inflammatory cyst

5. Globulomaxillary Cyst(Lesions) rather cysts Nasolabial Cyst Median Palatal Cyst Nasopalatine Canal Cyst

6. Benign Odontogenic Tumors Epithelial Origin Ameloblastoma , Conventional Ameloblastoma , unicystic Ameloblastoma , extraosseous / peripheral type Metastasizing (malignant) ameloblastoma Squamous odontogenic tumor Calcifying epithelial odontogenic tumor Adenomatoid odontogenic tumor Mesenchymal Origin Odontogenic fibroma Odontogenic myxoma / myxofibroma Cementoblastoma Cemento -ossifying fibroma

7. Benign Odontogenic Tumors… Mixed (Epithelial- Mesenchymal ) Origin Ameloblastic fibroma Primordial odontogenic tumor Odontoma Compound type Complex type Dentinogenic ghost cell tumor

8. Malignant Odontogenic Tumors Ameloblastic carcinoma Primary intraosseous carcinoma, NOS Sclerosing odontogenic carcinoma Clear cell odontogenic carcinoma Ghost cell odontogenic carcinoma Odontogenic carcinosarcoma Odontogenic sarcomas

9. Benign Nonodontogenic Tumors Ossifying fibroma Fibrous dysplasia Osteoblastoma Chondroma Osteoma Central giant cell granuloma Hemangioma of bone Langerhans cell histiocytosis

10. Other malignant tumors Burkitt’s lymphoma Chondrosarcoma Osteosarcoma Ewing’ssarcoma Multiple myeloma Metastatic carcinoma

11. Inflammatory Jaw Lesions Acute osteomyelitis Chronic osteomyelitis

12. Metabolic and Genetic Diseases Paget’s disease Hyperparathyroidism Acromegaly Cherubism Phantom bone disease

13. Common developmental anomalies with disturbance of the jaw Exostoses : are localized bony protuberances that arise from the cortical plate. These benign growths frequently affect the jaws and may be related to stresses placed on the bone from the function of teeth. The best-known oral exostoses , the torus palatinus and the torus mandibularis Cleft palate and Cleft lip

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15. … Condylar hyperplasia : is an uncommon malformation of the mandible created by excessive growth of one of the condyles . The cause of this hyperplasia is unknown, but local circulatory problems, endocrine disturbances, andtrauma have been suggested as possible etiologic factors. Congenital condylar hypoplasia often is associated with head and neck syndromes, including mandibulofacial dysostosis

16. References The World Health Organization Classification of Odontogenic Lesions: A Summary of the Changes of the 2017 (4th) Edition Oral Pathology: Clinical Pathologic Correlations, 7 th edition. Oral and Maxillofacial Pathology, 4 th edition

17. Thank you for your attention !