interpretation dr akram el awady

8/8/2019 Interpretation Dr Akram El Awady

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Radiolucent Lesions of the

Jaws


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1. Developmental .

2. Inflammatory .

3. Cysts .

4. Benign tumors .

5. Malignant tumours .

6. Diseases of lipid metabolism .

7. Endocrinal . 8. Blood diseases .

9. Multiple myeloma .

Radiolucent Lesions of the Jaws"


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1. Developmental

a) facial fibrous dysplasia

b) cherubism

2. Inflammatorya) apical granuloma

b) osteomyelitis


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R

cherebism

Answers on next slide


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Periapical granuloma


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3. Cysts Odontogenic in origin :

a) inflammatory periodontal cyst ( apical,

lateral and residual). b) Dentigerous .

c) primordial.

Non-Odontogenic in origin:

a) nasopalatine ( incisive canal). b) Fissural Alv. median cyst. and globulo

maxillary cyst.

c) Latent Bone Cyst.


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Apical or radicular cyst


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Residual cyst Lateral peridontal cyst


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Dentigerous cyst


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Primordial cyst


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Globulomaxillary

cyst


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Traumatic boneTraumatic bone

cystcyst


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TraumaticTraumatic

bone cystbone cyst


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4. Benign tumors :

odontogenic origin:

a) ameloblastomab) C. fibroma.

c) C. myxoma.

d) cementoma in earlystage.

C.T. origin :

a) central giant cellreparative

granuloma.

b) C. hemangioma .


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Ameloblastoma


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Ameloblastoma


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Cementoma early stage

(vital teeth)


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Central giant cell granuloma


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Central

hemangioma


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5. Malignant tumors

Primary

a)osteogenic sarcoma .

b)Ewing's tumor. Secondary due to primaries of

a) thyroid.

b) bronchi.

c) prostate.d) breast.

e) kidney.


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6. Diseases of lipid metabolism

a)eosinophilic granuloma.

B) gaucher's disease.

c) hans-schuller-christian disease.

7. Endocrinal

Hyperparathyroidism.


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eosinophilic granuloma


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Hans-schuller-

christian disease.


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8. Blood diseases.

Sickle cell anemia.

9. Multiple myeloma.


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Sickle cell anemia.


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"Radiopaque Lesions of the

Jaws"1. Dystrophic

2. Inflammatory

3.Tumors

4. Miscellaneous

Paget disease of bone

a) osteomyelitis.

b) condensing osteitis.

a) ossifying fibroma.

b) osteoma and torus palatinus and mandibularis.

c) cementoma (late stage),

d) odontoma

e) osteogenic sarcoma.

f) rare diseases e.g. marble bone disease.

a) retained roots.

b) metallic foreign bodies.

c) unerupted teeth.

d) R.O. superimposition of a submandibularcalculus ( stone).


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condensing osteitis.


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ossifying fibroma.


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Torus palatinus


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Mandibular tori


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Odontoma


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Osteo

sarcoma


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osteogenic

sarcoma.


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"Combined R.L. and R.O. lesions

of the Jaws" 1. Osteomyelitis .

2. Pagets disease.

3. Ossifying fibroma. 4. Ameloblastic odontoma.

5. Cystic odontoma.

6. Cementoma. 7. Metastasis from breast or prostate.

8. Osteogenic sarcoma.


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Multilocular cystic appearance of

jaws ( in X-ray): 1) Central hemangioma.

2) Central myxoma.

3) Central fibroma

.

4) Central myxo-fibroma.

5) Central reparative giant cell granuloma

6) Ameloblastoma.

7) Hyperparathyroidism.

8) Cherubism.

9) Osteolytic sarcoma.

10) Some of odontogenic cysts e.g. primordial cyst.


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Condensing osteitis:

Well defined R.O. areaaround apices of non-vitalteeth. This is due to high

host resistance or lowgrade infection.

Ameloblastoma:

Multilocular R.L. areas,which produces boneexpansion of bothbuccal and ling. plates(contrary to dental cyst).


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Ameloblastoma


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Odontomes:

1. Complex composite:

R.O. area without definite

dental arrangement ofTs.

2. Compound composite:

R.L. line surrounding a

group of R.O. masses

(dental Ts)


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ossifying fibroma:

R.L. area contains

R.O. foci in its center.


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Osteoma:

The compact type

gives ivory white

R.O., whilecancellous type gives

R.L., which encloses

medullary spaces.


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Ewings tumour:

diffuse bony R.L. and

cortical bone

formation that givesthe onion peal

appearance.


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Hyperparathyroidism:

multiple unilocular R.L.

areas.


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Cherubism: Multilocular

R.L. areas bilaterally only

affecting the Mand. &

ascending ramus.

Fibrous dysplasia: R.L.

and R.O. areas ( ground

glass or orange peel)

appearance in intraoral

film and the smokescreen appearance in

extraoral films.


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Fibrous dysplasia


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Multiple myeloma:Punched out R.L. areas

(multiple and separate).


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Dentigerous cyst: A

R.L. area with a R.O.

margin. The crown of

tooth will beprojecting into the

cavity. The involved

tooth is unerupted or

impacted


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Dentigerous cyst


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Incisive canal cyst:

Heart shaped. R.L.

area with R.O.

margin. It separatesthe roots of upper

centrals (vital).


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Ameloblastic

odontoma: Central

destruction of bone

(R.L.) with expansionof cortical plates and

the presence within

the lesion of R.O.

masses which may ormay not similar to

teeth.


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Osteomyelitis:

Acute - diffuse hazziness

of the trabeculae the inf.

Border of mandible is ill-

defined.

Chronic ---moth -eaten

appearance of bone i.e.

alternate zones of R.O. &

R.L. The R.O. indicatingsequestra formation.


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interpretation dr akram el awady

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