Midterm Review Flashcards
Describe the radiographic findings of a dentigerous cyst:
- consistency widened follicular space of greater 3 mm
- well-delineated radiolucency with corticated borders
With a dentigerous cyst, the cyst lining arises from remnants of the:
dental follicle
Accounts for 20% of jaw cysts:
dentigerous cyst
Describe the age/sex/site most common for dentigerous cyst:
- highest incidence in 20s & 30s
- most common in mandibular 3rd molars and maxillary canines and can affect any impacted tooh
Describe the possible treatments for dentigerous cysts:
- enucleate
- degree of surgery is dependent on size of tumor
- potential for degeneration of the cyst lining to an ameloblastoma or squamous cell carcinoma
What are potential risks for a dentigerous cyst?
ameloblastoma or squamous cell carcinoma
dentigerous cyst
dentigerous cyst
dentigerous cyst
expansion of dentigerous cyst
Presents as a soft fluid filled swelling of crestal mucosa in an area of an eruption tooth:
eruption cyst
An eruption cyst often has ____ coloration due to ___
blueish; trauma creating blood in cystic fluid
Radiographically for an eruption cyst you may see:
lack of crystal alveolar bone because of position of erupting crown and cyst near crest
Age/sex/site for an eruption cyst:
- less than 10 years of age in the mixed dentition stage
- most common in the mandibular molar region
Management for an eruption cyst include:
- often rupture sponatenously
- some may require simple exicsion
eruption cyst
eruption cyst
a mixed odontogenic tumor:
amelobalstic fibroma
radiographically- an ameloblastic fibroma may be seen as:
pericoronal radiolucency associated with a developing tooth:
age/sex/site most common for an ameloblastic fibroma:
- 70% of cases are less than 20 years old
- mean age 14-15.5 years
- highest incidence in mandibular molar to premolar region
Describe the management for an ameloblastic fibroma:
enucleation with 20% recurrence
a mixed odontogenic tumor, similar to amelobastic fibroma but has mineralized stroma:
ameloblastic fibrodontoma
What happens if mineralization is high in an amelobasltic fibroodontoma
radiopaque flecks may be evident radiographically
Radiographically how does an ameloblastic fibroodontoma appear?
pericoronal radiolucency associated with a developing tooth with radiopaque flecks in the lumen
Age/sex/site for an ameloblastic fibroodontoma:
- mean age 15 years
- posterior mandibule
Treamtnent for an amelobalstic fibroodontoma:
must be differentiated from odontoameloblastoma as the latter is more aggressive
ameloblastic fibroma
ameloblastic fibroma
ameloblastic fibroma
ameloblastic fibroma
ameloblastic fibroodontoma
ameloblastic fibroodontoma
ameloblastic fibroodontoma
Rare tumor that must be differentiated from ameloblastic fibroodontoma as it is more aggressive and requires surgical resection:
odontoameloblastoma
Describe the radiographic appearance of odontoameloblastoma:
- expansive with destruction of adjacent bone
- rudimentary tooth-like structures similar to complex odontoma
Age/sex/location for odontoameloblastoma:
teens & children
mainly in mandible
3-7% of odontogenic tumors:
adenomatoid odontogenic tumor
histologically a cross between a dentigerous cyst and an ameloblastoma
adenomatoid odontogenic tumor
odontogenic epithelium is arranged in duct-like glandular array:
adenomoatoid odontogenic tumor
Consistently widened follicular space of greater than 3mm if associated iwht crown of impacted teeth (75percent of cases are pericoronal)
adenomatoid odontogenic tumor
Radiographically how do we see an adenomatoid odontogenic tumor?
well delineated radiolucency with corticated border (usually greater than 3 cm)
Age/sex/location most common for adenomatoid odontogenic tumor
Females to males 2:1
adolescents (10-19 years)
anterior jaws
more common in maxilla
Treament of adenomatoid odontogenic tumor:
enucleation and recurrence
adenomatoid odontogenic tumor
adenomatoid odontogenic tumor
adenomatoid odontogenic tumor
adenomatoid odontogenic tumor
adenomatoid odontogenic tumor
Approximately 50% of pindborg tumors occur with:
impacted teeth
radiographically describe a pindborg tumor may appear:
- radiopaque flecks due to calcified amyloid
- breakdown product of neoplastic epithelial cells (these mineralizations are called Leisengangs rings)
Age/sex/site most common for pindborg tumors:
mean age of 40 years
mandible: maxilla 2:1
poster mandible
Pindborg tumor treatments:
large lesion require en bloc resections
Pindborg tumor =
calcifying epithelial odontogenic tumor
pindborg tumor
pindborg tumor (calcifying epithelial odontogenic tumor)
pindborg tumor
Extremely variable presentation with approximately 2-16% behaving as neoplasms:
gorlin cyst
Gorlin cyst=
calcifying odontogenic cyst
Gorlin cyst size:
2cm -12 cm
Gorlins cysts are commonly seen in ____ population and ___ area:
- occur at any age but commonly diagnosed in teens & young adults
- no sex favors
- 65% in anterior maxilla
Treatment for gorlins cyst:
simple enucleation with minimal recurrence
Gorlins cyst