24 Questions
What is the most common site for ameloblastic fibroma?
Mandibular molar region
How does the age group affected by ameloblastic fibroma compare to conventional ameloblastoma?
It affects younger age groups
What is the typical radiographic appearance of ameloblastic fibroma?
Unilocular
How does the background surrounding tissue of ameloblastic fibroma differ from that of ameloblastoma?
It contains loose, cellular fibromyxoid CT similar to immature developing pulp of teeth
What is a common feature associated with ameloblastic fibroma in radiographs?
Unerupted teeth
What is the histological composition of the epithelium in ameloblastic fibroma?
Thin strands and cords of odontogenic epithelium containing stellate reticulum cells
Which odontogenic tumor is associated with pain mainly in the first molar region?
Cementoblastoma
What is the typical age range for patients affected by cemento-ossifying fibroma?
20-40 years
Which odontogenic tumor causes a slowly enlarging painless swelling mainly in the molar and premolar region?
Cemento-ossifying fibroma
Which odontogenic tumor is composed of dense mass of acellular cementum in a fibrous stroma?
Cementoblastoma
What radiographic feature is associated with juvenile ossifying fibroma?
Well-defined radiolucency with gradual calcification surrounded by radiolucent rim
What makes the extraction of a tooth affected by cementoblastoma very difficult?
Resorption of the related roots caused by the attachment of the mass
Which odontogenic tumor variant is seen in younger patients?
Juvenile ossifying fibroma
What histological feature is characteristic of cemento-ossifying fibroma?
Composed of cellular fibrous connective tissue stroma containing trabeculae of bone & numerous cementicles.
Which odontogenic tumor variant used to be discussed in bone tumors, but recently moved to the WHO classification of odontogenic tumors?
Cemento-ossifying fibroma
Which odontogenic tumor was first included in the odontogenic tumors in the recent 2017 WHO classification?
Primordial odontogenic tumor
What age group is most commonly affected by odontogenic myxoma?
People in their second or third decade of life
Which odontogenic tumor is characterized by a 'soap bubble' appearance in radiographs and a 'tennis racket' appearance?
Odontogenic myxoma
What is the most common clinical presentation of odontogenic fibroma?
Painless swelling mainly in the mandible
Which odontogenic tumor is associated with impacted teeth and can sometimes cause bone expansion?
Compound odontome
What distinguishes complex odontomes from compound odontomes histologically?
Presence of enamel, dentin, cementum, and pulp tissues but not well-organized as in normal teeth
What is the characteristic radiographic appearance of complex odontomes?
Solid radiopaque mass with a surrounding radiolucent zone
Which structure is primarily affected by cementoblastoma?
Periodontal ligament
What distinguishes odontogenic myxoma from ameloblastoma histologically?
(Strands of odontogenic epithelium within the connective tissue)
Recap on odontogenic tumors of mixed origin, focusing on ameloblastic fibroma. Discussing its characteristics, common age group, growth pattern, and the most frequent site of occurrence.
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