Odontogenic tumors Flashcards
Name the Ectodermal (Epithelial) odontogenic tumors
Ameloblastoma
Calcifying Epithelial Odontogenic Tumor (pindborg tumor or CEOT)
Adenomatoid Odontogenic Tumor (AOT)
Squamous Odontogenic Tumor (SOT)
Clinical aspects of Ameloblastoma
Affects all ages (»_space; middle age)
Most are painless
+- cortical expansion
Where are ameloblastomas most common
75% Mandible (posterior)
Describe the radiographic aspects of ameloblastomas
May be pericoronal
Always radiolucent
Fairly well circumscribed
Classically multilocular, move teeth, root resorption
Treatment of ameloblastomas
Surgical Aggressive curettage (50% recur) vs resection
Name the 4 variants of ameloblastomas
- Peripheral (extrosseous) - less aggressive
- Unicystic - cyst in which it is confined
- Malignant ameloblastoma - benign - metastasizes
- Ameloblastic carcinoma - histologic features of malignancy, aggressive, metastasizes.
Describe how to diagnose a unicystic ameloblastoma
Cannot definitively diagnose on incisional biopsy.
Clinical aspects of Pindborg Tumors. Where is it found most commonly?
Affects all ages
|»_space; Mandible, midbody
Radiographic aspects of Pindborg Tumors
Lucent to mixed lucent/opaque (“driven snow”)
Often associated with unerupted teeth
Treatment of Pindborg Tumors
Surgical
Clinical aspects of Adenomatoid Odontogenic Tumors (AOT)
- Affects mostly individuals in 1-3 decades (Teens)
- Affects Females more often
- More common in unerupted teeth
Where are Adenomatoid Odontogenic Tumors most commonly found?
> > Maxilla, 3/4 anterior jaws
Radiographic aspects of Adenomatoid Odontogenic tumors
Lucent (pericoronal), may contain flecks of opacity.
Treatment of Adenomatoid Odontogenic tumors
Enucleation
Name the Mesodermal (Connective tissue) odontogenic tumors
- Central Odontogenic fibroma
- Peripheral Odontogenic fibroma
- Odontogenic Myxoma
- Cementum lesions
Clinical aspects of Peripheral Odontogenic fibroma?
(covered under non-neoplastic lesions)
- Reactive gingival lesion of PDL origin
- More common in young people
- More common in anterior gingiva
Clinical aspects of Odontogenic myxoma
Affects all ages (Increased in young)
Asymptomatic
+- Expansion
Radiographic aspects of Odontogenic Myxoma
Lucency often containing residual opaque trabeculae
Treatment of Odontogenic myxoma
Block resection
Name the types of Cementum lesions
- Central cemento-ossifying fibroma
- Benign cementoblastoma (true cementoma)
- Gigantiform cementoma
Which Cementum lesion is a neoplasm of PDL origin
Central cemento-ossifying fibroma
Clinical aspects of central cement-ossifying fibroma
- Affects Adults
- more commonly in Females
- More commonly in Blacks
- More commonly in Mandible
Asymptomatic & +-Expansion
Radiographic aspects of central cemento-ossifying fibroma
Well circumscribed
Associated with tooth roots
Completely lucent to mixed lucent/opaque to mostly opaque.
Treatment of Cemento-ossifying fibroma
Enucleation
Clinical aspects of Benign cementoblastoma
Seen in people of 2-4 decades.
- More commonly seen in Mandible (Md 1st molar)
- Pain and/or expansion
- Tooth vital/vs condensing osteitis - non vital
Radiographic aspects of Benign cementoblastoma
Pathognomonic - sclerotic mass with peripheral radiolucent zone. Fused with tooth root
Treatment of Benign cementoblastoma
Surgical removal
Recurrence 0-37%
Clinical aspects of Gigantiform Cementoma
Must be autosomal dominant
Radiographic aspects of Gigantiform Cementoma
Multiquadrant globular opacities
Treatment of Gigantiform Cementoma
Usually, none
Name the Mixed (epithelial & Connective tissue) Odontogenic tumors
Ameloblastic fibroma
Ameloblastic fibro-odontoma
Odontoma
Clinical aspects of Ameloblastic fibroma
Young, 1-3 decades
» Posterior Mandible
Asymptomatic
Radiographic aspects of Ameloblastic fibroma
Always lucent
Treatment of Ameloblastic fibroma
Surgical removal
Variant of Ameloblastic fibroma
Ameloblastic fibrosarcoma - rare malignant transformation of mesenchymal component
Clinical aspects of Ameloblastic fibro-odontoma
Young, 1-3 decades
Asymptomatic
Radiographic aspects of Ameloblastic fiber-odontoma
Mixed lucent/opaque, often overlying unerupted tooth.
Treatment of Ameloblastic fibro-odontoma
Surgical removal
Clinical aspects of Odontoma
- *Most common odontogenic tumor. Viewed as a developmental hamartoma, not a neoplasm
- Young, 1-3 decades
- Asymptomatic
Radiographic aspects of Odontoma
Radiopaque with thin lucent border (follicle) often overlying unerupted teeth.
- Compound –> tooth-like,»_space; Anterior jaws
- Complex –>random deposition,»_space; Posterior jaws
Treatment of Odontomas
Surgical removal
Complications of Odontomas
Dentigerous cysts, Ameloblastoma
