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I. Epithelial Odontogenic Tumors

1. Ameloblastoma

2. Odontogenic adenomatoid tumor

(Adenomatoid odontogenic tumor)

3. Calcifying epithelial odontogenic tumor

(Pindborg tumor)

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Fig. 14-1

Ameloblastomashowing a largemonolocular lesion

with adjacent smallmultilocular spaceshaving a soap bubble

appearance.

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Fig. 14-2

Surgical specimen ofan ameloblastomathat shows a buccal

cortical plateexpansion and has amultilocular soap

bubble appearance.

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Fig. 14-3

Unilocular

ameloblastoma thatshows anexpansion into the

oral cavity.

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Fig. 14-4

Multilocularameloblastoma in themandibular molar

region.

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Fig. 14-5

Ameloblastoma that resembles anodontogenic cyst (dentigerous cyst). Acareful clinical and radiographic examination

showed an expansion of the cortical bone.

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Fig. 14-6

Ameloblastomaproducing rootresorption. Notice

the evidence ofexpansion at theinferior border of themandible. Thelesion resembles adentigerous cystsurrounding the

crown of theimpacted mandibularthird molar.

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Fig. 14-7

Ameloblastomaproducing resorptionof the roots of the

second mandibularmolar. Theradiopaque object

posterior to the ramusis an ear-ring.

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Fig. 14-8

Odontogenicadenomatoid tumorresembles a

dentigerous cyst and isassociated with animpacted maxillaryanterior tooth. Theradiolucency must bedifferentiated from anormal follicular space

and from otherpericoronal lesions.

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Fig. 14-9Odontogenicadenomatoid tumor

associated with animpacted first premolar.The pericoronalradiolucency must bedifferentiated fromother pericoronallesions. A careful

examination showsfaint radiopaque flecksof calcification in the

radiolucency.

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Fig. 14-10

Odontogenicadenomatoid tumorshowing multiple

radiopaque foci(calcifications)pericoronal to theimpacted mandibular

permanent canine. Theradiopaque line near thesuperior border of the

mandible suggests thatthe patient hadundergone sialographyfor an unrelated

symptom.

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Fig. 14-11

An occlusal projectionshowing an odontogenicadenomatoid tumor in

the maxillary anteriorregion. The lesion canoccur without being

associated with anunerupted tooth. Thereis presence of a swelling

in the canine region anddivergence of the rootsof the anterior teeth.

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Fig. 14-12

Calcifying epithelialodontogenic tumorinvolving themandibular second

and third molarregion.Radiographically,the lesion shows ahoneycombappearance.

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Fig. 14-13Calcifying epithelialodontogenic tumor(Pindborg tumor)

involving an uneruptedtooth. The well-delineated pericoronal

radiolucency aroundthe mandibular thirdmolar containsnumerous scattered

radiopaque flecks ofcalcification.

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II. Mixed Odontogenic Tumors ----Epithelial and Mesenchymal

1. Ameloblastic fibroma

2. Ameloblastic odontoma3. Ameloblastic fibro-odontoma

4. Odontomas

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Fig. 14-14Ameloblastic fibromaassociated with

unerupted anddisplaced mandibularsecond and thirdmolars. The lesion ispericoronal to theteeth which are in theformative stages.

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Fig. 14-15Ameloblastic fibromashowing a multilocularappearance and

associated with anunerupted displacedincisor. There is

expansion of themandible. Although mostameloblastic fibromasoccur in the mandibular

premolar-molar areas,other sites maysometimes be affected

as seen in this case.

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Fig. 14-16

Ameloblastic fibromaassociated with themandibular molars.

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Fig. 14-17

Ameloblastic fibromagrowing superiorlyand distally to the

crown of theunerupted third molar.The lesion should be

differentiated fromother pericoronallesions.

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Fig. 14-18

Ameloblastic fibro-odontoma is pericoronal tothe impacted maxillary third molar and involvesthe maxillary sinus.

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Fig. 14-19

Ameloblastic fibro-

odontoma locatedsuperior to the crownof an erupting

mandibularpermanent firstmolar in a 6 year oldchild.

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Fig. 14-20

Ameloblastic fibro-odontomaassociated with thecrown of anunerupted molar in a4 year old child.

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Fig. 14-21

Compound odontomashowing smallradiopaque masses

preventing eruption ofthe central incisor.

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Fig. 14-22

Compound odontomashowing smalltoothlets. The lesion

is surrounded by aradiolucent line.

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Fig. 14-23

Compound odontomaexhibiting a prominentperipheral

radiolucencybordered by aradiopaque line.

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Fig. 14-24

Compound odontomaconsisting of smalltoothlets.

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Fig. 14-25

Compound odontomaconsisting of smalltoothlets.

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Fig. 14-26

Complex odontomaobstructing thepermanent canine

from erupting. Thelesion is surroundedby a radiolucent

periphery. There isretention of thedeciduous canine.

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Fig. 14-27

Complex odontoma inthe mandibular thirdmolar and ramusregion. A radiolucentline surrounds thelesion.

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Fig. 14-28

Complex odontomadeveloped from themandibular second

molar.

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Fig. 14-29

Complex odontomadeveloped from themaxillary third molar.

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Fig. 14-30

Complex odontomain the maxillarytuberosity andassociated with thecrown of theunerupted maxillary

third molar.

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Fig. 14-31

Complex odontomadeveloping from themandibular thirdmolar.

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III. Mesenchymal OdontogenicTumors

1. Odontogenic myxoma (myxofibroma)

2. Odontogenic fibroma3. Cementifying (ossifying) fibroma

4. Cementoblastoma

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Fig. 14-35

Cementifying fibroma (ossifying fibroma)exhibiting foci of calcified masses andproducing expansion of the left maxillary sinus.

A similar appearance may sometimes be seenin fibrous dysplasia.

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Fig. 14-36

Cementifying fibroma (ossifying fibroma) showingcalcification in the radiolucency located betweenthe mandibular left second premolar and thirdmolar.

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Fig. 14-37Ossifying fibroma inthe radiolucent stage

showing expansion ofthe cortical bone ofthe mandible.

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Fig. 14-38

Ossifying fibromaexhibiting radiopaquefoci of calcified

material. The lesionshows buccal andlingual expansion of

cortical bone.

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Fig. 14-39

Cementoblastoma inthe third stageconsisting of aradiopaque masswith a radiolucentborder and attached

to the apices of themandibular secondpremolar and first

molar. The teeth arevital.

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Fig. 14-40

Cementoblastomaconsisting of aradiopaque mass with

a radiolucent borderand attached to theapices of the

mandibular secondmolar. The involvedtooth is vital.

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Fig. 14-41

Cementoblastoma atthe root apices of themandibular first

molar. The involvedtooth is vital.