Odontogenic cysts Flashcards
What is it called when surface epithelium grows into the jaw to produce a tooth germ?
odontogenesis
What are they called with a pathologic cavity lined by odontogenic epithelium is filled with fluid or semisolid material?
odontogenic cysts
How can odontogenic cysts form?
inflammation
unknown through developmental
What 2 cysts are inflammatory while all else are developmental?
Radicular cysts
buccal bifurcation cysts
Patient has a radiolucent cyst in place of a missing tooth in the mandibular 3rd molars. What is it called and how?
primordial cyst
degeneration of enamel organ that aborted odontogenesis
Patient walks in with asymptomatic, well circumscribed, pericoronal radiolucency from CEJ around crown in the mandibular 3rd molars and maxillary cuspids. What are they called and how?
dentigerious cyst (or follicular cyst) separation of follicle from around the crown of developing tooth
How do you treat dentigerous cysts (follicular cysts)?
surgical removal of Mn 3rd molars
Cuspids may be able to decompress and pull cuspids in orthodontically
What is the most common type of salivary gland malignancy in adults?
mucoepidermoid carcinoma
What is a rare, benign tumor of odontogenic epithelium?
ameloblastoma
A patient has a periapical pathology and it has devitalized pulp and secondary inflammation. You deem it the most common odontogenic cysts. What is it?
apical periodontal cyst
A patient has a small, well circumscribed radiolucency along the lateral root surface of vital mandibular cuspids bilaterally. What is it and how?
lateral periodontal cyst
from cystic degeneration of rests of Malaise in PDL
A patient has a small, well circumscribed radiolucency along the lateral root surface of vital mandibular cuspids bilaterally. It is polycystic, multilocular, and has come back after you excised it before. What is it?
botryoid odontogenic cyst
A patient’s newborn has some congenital, small yellowish elevations on their alveolar ridge. What is it and what should you do?
dental lamina cysts from degenerating dental lamina
Tx is no treatment. Will self-marsupialize and heal.
An adult patient has soft compressible cysts on mandibular cuspids bilaterally that looks like a mucocele, but you know that mucoceles don’t occur on gingiva. What is it and how and what treatment?
adult gingival cyst
degeneration of rests or glands of Serres (dental lamina)
Tx is excision
Two patients walk into your office. A grandpa and a 2-3 year-old. They both have unilocular or multilocular radiolucency on the posterior mandible (more than Mx). It has expanded and there is draining and pain and the prognosis is clinically aggressive. What is it and how?
parakeratinized odontogenic keratocyst
from dental lamina
After excising a parakeratinized odontogenic keratocyst, what do you advise the patient and what syndrome is it linked to?
There is a 1/3 recurrence and they might have mutation of a tumor suppression gene called basal cell nevus-bifid rib syndrome
What type of odontogenic keratocyst does not recur often and is smaller, less aggressive and not associated with the syndrome?
orthokeratinized odontogenic cyst
A patient has a radiolucent to mixed radiolucent/opaque along the mandible that is asymptomatic and extraosseous. It appears calcified and the teeth have not been able to erupt. What is it and Tx?
calcifying odontogenic cyst (AKA Gorlin Cyst)
Tx; conservative surgical removal
A patient has a large, unilocular to multilocular radiolucency on the mandible. What is it and Tx and what to tell the patient?
glandular odontogenic cyst
Tx surgical excision and 30-50% recurrence
A child patient has an inflammatory cysts occurring on buccal of erupting mandibular 1st molar that is causing buccal swelling. Radiographic findings show unilocular lucency involving furcation of roots. What is it and Tx?
buccal bifurcation cyst or paradental cyst
Tx - enucleation of cyst (not cutting into or dissecting) and do not extract tooth
