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Oral Pathology

OOO – AOT

At the end of the presentation learners should be able to explain the etiopathogenesis, clinical features, clinical and radiological differenrential diagnosis, histopathological features, investigations & treatment for Adenomatoid Odontogenic Tumour.     DENTIGEROUS CYST AMELOBLASTOMA MURAL AMELOBLASTOMA ADENOMATOID ODONTOGENIC TUMOUR MURAL ADENOMATOID ODONTOGENIC TUMOUR ODONTOGENIC KERATOCYST CENTRAL GIANT CELL GRANULOMA

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Odontogenic-Tumors

Projections of dental lamina into ectomesenchyme Layered cap (inner/outer enamel epithelium, stratum intermedium, stellate reticulum) Odontoblasts secrete dentin à ameloblasts (from IEE) à enamel Cementoblasts à cementum Fibroblasts à periodontal membrane   Developmental Lateral Periodontal Cyst [Slide 17 Content] From epithelial rests in periodontal ligament vs. primordial cyst – tooth …

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Odontogenic Tumors-IV

At  the end of the lecture student should be able to Describe etiology, Enlist clinical features, Enlist radiological features, Enlist histopathological features of Unicystic ameloblastoma & Calcifying epithelial odontogenic tumor   Growth of the ameloblastic epithelium into the connective tissue wall of the otherwise cystic neoplasm. The epithelium may remain …

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Odontogenic Tumors-Ib

Radiographically, the intraosseous ameloblastoma classically is described as a multilocular or ‘‘soap-bubble’’radiolucency. Other radiographic patterns seen are Smooth bordered unilocular radiolucency, A unilocular lucency with a scalloped or lobulated border, A poorly delineated mixed lucentopaque lesion The granular cells sometimes show a sharply delineated cell border, but most often the …

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Odontogenic Tumors-Ia

                                INTRODUCTION Odontogenic tumors are lesions derived from epithelial, ectomesenchymal  &/or mesenchymal elements that are or have been a part of tooth forming apparatus. Exclusively found in jaw bones (Intrabony or centrally located) or in the soft tissues overlying the tooth bearing areas (Peripherally located)   Benign odontogenic tumors …

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Odontogenic cysts-II

The term odontogenic keratocyst was 1st used by Philipsen in 1965. The name ‘primordial cyst’ has been used synonymously with OKC for years. The cyst with following  characteristics are called as OKCs. Corrugated para/orthokeratinized surface. Uniform thickness of epithelium  6-10 layers thick. Prominent palisaded, polarized basal layer often described as …

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Odontogenic cysts-I

Developmental Dentigerous cyst Eruption cyst Odontogenic keratocyst Gingival cyst of newborn Gingival cyst of adult Lateral periodontal cyst Calcifying odontogenic cyst Glandular odontogenic cyst B. Inflammatory Periapical cyst Residual cyst Paradental cyst   Derived from rests of Malassez Periapical cyst Residual cyst Derived from reduced enamel epithelium Dentigerous cyst Eruption …

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Odontgenic Tumors-VII

At  the end of the lecture student should be able to Describe etiology, Enlist clinical features, Enlist radiological features, Enlist Histopathological features of Metastasizing ameloblastoma, Ameloblastic carcinoma, Primary intraosseous carcinoma, Ghost cell odontogenic carcinoma, Clear cell odontogenic carcinoma,& Ameloblastic fibrosarcoma   Etiology, Clinical features, Radiological features,& Histopathological features of Metastasizing …

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normalradiographicanatomy

At the end of the presentation the learner should be able to Describe anatomy of tooth Describe  supporting structures of tooth Describe normal radiographic anatomical landmarks of maxilla Describe normal radiographic anatomical landmarks of mandible ANATOMIC LANDMARKS OF MAXILLA Intermaxillary suture Anterior nasal spine Nasal fossa and Nasal septum Incisive …

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Non-Odontogenic cysts-VI

Median palatal cyst Median mandibular cyst Epidermoid cyst Dermoid cyst Thyroglossal duct cyst Branchial cleft cyst (cervical lymphoepithelial cyst) Oral lymphoepithelial cyst   Incisive Canal Cyst Stafne Bone Cyst Traumatic Bone Cyst Surgical Ciliated Cyst (of Maxilla) Nasolabial cyst Median palatal cyst Median mandibular cyst Epidermoid cyst Dermoid cyst Thyroglossal …

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Multilocular radiolucencies

When whole canal is increased- serpiginous shape Vessel –phleboliths; Vessel wall calcification – tram line Teeth displacement Mand & mental foramen enlarged Involved bone enlarged Developing teeth larger , erupt earlier   Odontogenic tumor Arises from- odontogenic epi or odontogenic cyst Types solid, unicystic, or multicystic Pericoronal / not necessarily …

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