The lesion type epidemiology Age Sites of the pathogenesis’ radiographicaly histopathology Behavior and Clinical features
range lesion treatment
ameleoblastoma -Epithelial -Rare, but it’s Wide -80%in the Possible causes Commonly 3 pattern: -locally invasive . -slow growing and
lesion the Age mandible in : mutilocular -follicular -tumer islands asymptomatic in early stages .
without commonest Range. which -Dental lamina radiolucencies. pattern. infiltrate the -as it gets larger , slight facial
odontogenic of all 90%in the or its residues. -root -plexiform cancellous deformity and bone expansion
mesenchyme. odontogenic pos. area -lining of resorption of pattern. marrow space occur .
Benign locally tumors. and ramus. odontogenic associated (no enamel is without causing -the enlargement is bony hard
invasive -1% of all 20% in the cyst. teeth. formed and the bone ,non-tender and avoid to
neoplasm. oral tumors . maxilla in -Basel layer of -maybe peripheral cells destruction. fusiform.
-truly -commonly which oral epith. associated are considered t.t.:require wide -maxillary lesions may appear
malignant are in west Africa 15%occur (peripheral with impacted pre-ameloblast. surgical excision small cuz of the expansion to
rare . and black in the pos. ameleoblstoma) teeth specially ) with normal the sinuses .
American. area and the 3 molar . margins .- -in advanced cases , egg-shell
involve the -may mimic recurrence rate cracking is felt due to thinning
antrum. dentiegerous is 50-90% of the cortex .
cyst . -pulmonary -in late stages expansion to the
-less metastasis may soft tissue and perforation of
commonly as occur. bone may occur .
unilocular Loose teeth .
radiolucencies -pain is a seldom feature .
Sequmous Epithelial rare ---- Present Thought to be Present as Consist of Some are -------
odontigenic lesion with tooth derived from well-defined islands of well- aggressive but
tumer without mobility epithelial rest semi-lunar or differentiated curettage is the
mesenchyme. associated of malazzes. triangular with sequmous treatment of
-benign. with roots . radiolucency epithelium. choice.
-some are associated
aggressive. with roots.
Calcifying Epithelial Rare Wide -mandible ---------------- -irregular -sheets and Less aggressive Exraosseous example has been
epithelial lesion age more than radiolucent strands of than reported.
odontogenic without range maxilla. area that may polyhedral ameleoblastoma.
tumer mesenchyme -molar- or may not be epithelia cells . -locally invasive.
(pindborg -benign, premolar well- -esinophiles
tumor) locally region. demarcated. cytoplasm.
invasive 50% -may contain -prominent
neoplasm. associated varying intracellular
-not- with un- amount of bridges in
malignant. erupted radiopaque fibrous stroma.
tooth. masses due to Marked nuclear
Adenomatoid Epithelial rare 2 ,3 Ant. ----------- Well-defined Well- Slowly enlarging -rare extra osseous variant
odontogenic lesion decade Maxillary radioluscencies encapsulated tumor . -slowly enlarging swelling .
tumer without area and may -cystic or solid. Treated by
odontogenic specially contain -sheets or conservative
mesenchyme canine area radiopaque strands of epith. enculation .
. area that looks -duct-like
-often like structures lined
associated dentigerous by columnar
with un- cyst. epith.
--------------- ------------ ------------- -------- --------- ----------- -------------- ----------- ----------- -----------------
Ameleoblstic Benign Rare Young Pos. part of -------------- Well-defined Proliferating -Not invasive -slowly enlarging .
fibroma neoplastic age the radiolucency strands of -18% recurrence -painless swelling .
epithelial group mandible ,maybe odontogenic rate . *If it contain dentine its called
lesion with associated epith. Lying in a -doesn’t require ameleoblastic fibrodentinoma .
odontogenic with un- highly cellular aggressive *if it contain enamel its called
mesenchyme erupted tooth fibroblastic treatment , so ameleoblastic fibro-odontoma.
so it looks as tissue treatment is
dentigerous resembling conservative .
cyst. dental papillae
resemble that of
but stellate cell
Calcifying cystic -benign Rare Below Ant. To 1 ------------- Well-defined -Cyst lined by -slowly enlarging -Slowly enlarging
odontogenic epithelial age 40 molar area uni/multi- epith. Similar to -respond to -75%are intraosseous.
tumer tumor with in both locular ameleoblastoma conservative -also called calcifying
odontogenic jaws radiolucencies but shows ghost treatment. odontogenic cyst .or gorlin cyst
mesenchyme centrally with varying cells
. -can be degrees of keretenization.
-not a true peripherally radiopaque - there maybe
neoplasm -may be masses . dentine like
-considered associated masses .
as with -ghost cell may
hamartomas crowns of undergo
cause its un-erupted calcification.
grossly cystic teeth.
Dentinogenic Same as Rare Older Centrally Considered as a ----------- Same as above Some are -------------------------
ghost cell tumer above age within the solid variant of but its solid . aggressive and
groups jaws . the above locally invasive
-peripheral lesion . -some respond
gingival to conservative
lesion may treatment .
By Age range radiographically Sites How diagnosed treatment
Unicystic Younger age Well-defined unilocular Mandible mostly After histopathology Usually conservative , if not
ameleoblastoma groups .usually radiolucency associated with unerupted 3 molar examination , as infiltrate cyst lumen , but if it
the 2 and 3 un-erupted tooth. typical infiltrate it then treated as
decades ameleoblastoma , to typical ameleoblastoma .
distinguish it from
Peripheral Rare ----------------------- -Gingival or alveolar soft May look like Less invasive , so by
ameleoblastoma tissue without bone intraosseous type conservative treatment.
-consist mainly of
-may arise from oral basiloid cell.
epithelium or extra
osseous dental lamina
Odontome Content Growth Age Most Most Complication How Histopathology Solitary or Differential diagnosis’
potential range common commonly of the lesion discovered multiple
Complex It’s a tumor Limited and 2 or Premolar- Permanent Occasionally As an -Mass of Multiple are Show all stages of
odontome like mass considered 3 molar , mostly they cause incidental irregularly rare odontogenasise so its
consist of as decades region of with the expansion . radiographic well-formed difficult to differentiate
disorderly hamartomas of life . the crowns of -sometimes finding . enamel , from ameleoblastic
arranged . mandible un- dentigerous *Early dentine ,pulp fibroma and
dental tissue . . erupted cyst formed lesion found ,cementum ameleoblastic
-majority are teeth . around the radiolucent. surrounded by fibroodontoma
small -take the odontome . *mature fibrous capsule
-its place of -sometimes lesion : is .-varying
developmental missing lead to totally amount of
tooth. secondary radiopaque odontogenic
- infection. with a epithelium and
odontome defined structures of
of long radiolucent enamel organ.
following the root of
resorption the involved
Compound Tumor like The same 1 two Ant. same same same Same also it A number of same
odontome mass consist decades Maxilla appear either separate
of numerous of life. radiopaque or denticles
small discrete radiolucent or embedded
tooth like mixed in fibrous
structures . overlying the tissue .
crowns of un- -varying
erupted tooth. amount of
Invaginated Considered as
Hey all of you,,,, hope you are doing well .. !!! lsn those are tables I made summarizing the odontome material , to make
it easier to memorize and compare between different lesions ,,, so I wish you could benefit from them ,,,,,,
Good luck for all of you in your finals , allah ma yedye3 ta3ab 7ada nshalla ….w da3awtkom!!!
Arwa I. AL-Housban