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BENIGN ODONTOGENICTUMORS OF MANDIBLE

BY DR SIJI

MOD: DR SHASHIKALA R

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CONTENTS

• DEFINITION

• ODONTOGENESIS

• CLASSIFICATION• CLINICAL FEATURES

• RADIOLOGICAL FEATURES

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ODONTOGENESIS

• INVAGINATION

ELONGATION OF EPITHELIAL BUD IN TO CT >DENTAL LAMINA

• CAP STAGE

• EARLY BELL STAGE (INNER ENAMELEPITHELIUM,STELLATE RETICULM,OUTER

ENAMEL EPITHELIUM)• LATE BELL STAGE (DENTAL PAPILLA,

DENTAL FOLLICLE)

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ORIGIN

• AMELOBLAST >>>>ENAMEL

• ODONTOBLAST>>>>DENTINE

• CEMENTOBLAST>>>>CEMENTUM

• FIBROBLAST>>>>PERIODONTALMEMBERANE

• RESTS OF SERRE>>ISLANDS OF DENTAL

LAMINA• HERTWIGS ROOT SHEATH (root covering)

• CELL REST OF MALASSEZ (seen in PDL )

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DEFINITION• TUMOR IS A MASS OF TISSUE

FORMED AS A RESULT OFABNORMAL ,EXCESSIVE,UNCORDINATED, AUTONOMOUS ANDPURPOSELES PROLIFERATION OFCELLS

• IT CAN BE BENIGN OR MALIGNANT• ODONTOGENIC TUMOR

ORIGINATES FROM TISSUE ASSOCIATEDWITH TOOTH DEVELOPMENT>ODONTOGENIC EPITHELIUM>ODONTOGENIC ECTOMESNCHYME(C T)

>MIXED ORIGIN

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CLASSIFICATION(WHO-1992)

A) TUMORS OF ODONTOGENIC

EPITHELIUM1.AMELOBLASTOMA

>COMMON/CONVENTIONAL SOLID/MULTI CYSTIC>UNICYSTIC>PERIPHERAL

2.ADENAMATOID ODONTOGENIC TUMOR

3.CALCIFYING EPITHELIAL ODONTOGENIC TUMOR

4.SQUAMOUS ODONTOGENIC TUMOR

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B)MIXED ODONTOGENIC TUMOR

1.AMELOBLASTIC FIBROMA

2.AMELOBLASTIC FIBRO ODONTOMA

3.ODONTO AMELOBLASTOMA4.COMPOUND ODONTOMA

5.COMPLEX ODONTOMA

C)TUMORS OF ODONTOGENICECTOMESENCHYME

1.ODONTOGENIC FIBROMA

2.GRANULAR CELL ODONTOGENIC TUMOR

3.ODONTOGENIC MYXOMA

4.CEMENTOBLASTOMA

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AMELOBLASTOMA

SITES

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TYPES

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CLINICAL PRESENTATION

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RADIOGRAPHIC FEATURES

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UNICYSTIC AMELOBLASTOMA

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UNICYSTIC AMELOBLASTOMA

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PERIPHERAL AMELOBLASTOMA

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ADENAMATOID ODONTOGENIC

TUMOR SITES

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RADIOGRAPHS

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C E O T(PINDBORG’S TUMOR) 

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SQUAMOUS ODONTOGENIC

TUMOR

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SQUAMOUS ODONTOGENIC

TUMOR

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AMELOBLASTIC FIBROMA

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RADIOGRAPHIC FEATURES

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COMPOUND ODONTOME

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COMPLEX ODONTOME

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ODONTOGENIC FIBROMA

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PERIPHERAL ODONTOGENIC

FIBROMA

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GRANULAR CELL

ODONTOGENIC TUMOR

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ODONTOGENIC MYXOMA

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CEMENTOBLASTOMA

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