Tumors of Odontogenic Ectomesenchyme Flashcards
What are two examples of odontogenic tumors of ectomesenchyme?
Odontogenic myxoma
cementoblastoma
Why is the odontogenic myxoma assumed to be of odontogenic origin?
because it ONLY affects the jaw bones as a CENTRAL lesion…. no other bones
True or False: Odontogenic Myxoma only affects older adults
False
wide age range of affected
primarily young adults (avg 25-30)
What is the radiographic presentation of odontogenic myxoma?
unilocular (small) or multilocular (large)
resorption or displacement of roots
thin, wispy trabeculae of residual bone
soap bubble appearance
The lesional _______ of odontogenic myxoma into adjacent bony trabeculae contributes to the recurrence rates
proliferation/infiltration
What shape are the fibroblastic cells of odontogenic myxoma?
spindle-shaped or stellate-shaped
What is the treatment for odontogenic myxoma?
small lesions: curettage
large lesions: en bloc or segmental resection
What is the recurrence rate for odontogenic myxoma?
up to 25%
Most cementoblastoma occur in the ______ ______ region.
mandibular molar
How often is pain/swelling associated with cementoblastoma?
2/3 of cases
True or False: The radiographic features of cementoblastoma are very distinguishable.
True, they are almost pathognomonic
What are the radiographic features of cementoblastoma?
well-circumscribed radiopaque mass with a fine radiolucent border that is FUSED to the resorbed root of a tooth (mandibular molar)
True or False: The PDL surrounds the cementoblastoma.
True
True or False: Treatment of a cementoblastoma often involves extraction of the involved tooth.
True, as well as enucleation of the lesion
Other than extraction of the involved tooth, what can be done in order to treat a cementoblastoma?
endo treatment with enucleation of the lesion and amputation of the involved root
