Odontogenic Tumors

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Quizzes Created: 12 | Total Attempts: 33,793
Questions: 27 | Attempts: 2,615

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Odontogenic Tumors - Quiz

IPFW Oral Path Odontogenic Tumors


Questions and Answers
  • 1. 

    An Ameloblastoma is the most common epithelial tumor.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Ameloblastoma is indeed the most common epithelial tumor. It is a slow-growing, benign tumor that originates from the cells that form the enamel of the teeth. Although it is a benign tumor, it can be locally aggressive and invasive, causing destruction of the jawbone. Ameloblastoma commonly occurs in the mandible (lower jaw) and is more prevalent in males than females. Therefore, the statement "An Ameloblastoma is the most common epithelial tumor" is true.

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  • 2. 

    Ameloblastomas can originate from the epithelial lining of odontogenic cysts.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Ameloblastomas are a type of benign tumor that typically occur in the jawbone. They are believed to originate from the epithelial lining of odontogenic cysts, which are fluid-filled sacs that form around the roots of teeth. This connection between ameloblastomas and odontogenic cysts suggests that the development of ameloblastomas may be related to the abnormal growth of the epithelial cells in these cysts. Therefore, the statement "Ameloblastomas can originate from the epithelial lining of odontogenic cysts" is true.

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  • 3. 

    Cystic ameloblastomas occur in older adults than ameloblastomas do.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Mean age for ameloblastomas = 40, cystic is 35

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  • 4. 

    MER stands for Multilocular Expansile Radiolucency and is found on radiographs of a patient with an ameloblastoma.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    An ameloblastoma is a benign tumor that commonly occurs in the jaw. When a patient with an ameloblastoma undergoes radiographic imaging, a multilocular expansile radiolucency (MER) may be observed. This refers to a radiolucent area on the image that appears as multiple cavities or compartments within the bone, indicating the presence of the tumor. Therefore, the statement that MER is found on radiographs of a patient with an ameloblastoma is true.

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  • 5. 

    An ameloblastoma can look like a dentigerious cyst (radiolucency around erupting crown) on a radiograph.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Ameloblastoma is a benign tumor that originates from the cells that form tooth enamel. It can sometimes appear similar to a dentigerous cyst on a radiograph. A dentigerous cyst is a fluid-filled sac that forms around an unerupted or partially erupted tooth. Both conditions can present as radiolucencies around the crown of a tooth on an X-ray. Therefore, the statement that an ameloblastoma can look like a dentigerous cyst on a radiograph is true.

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  • 6. 

    An adenomatoid odontogenic tumor can also be called a Pindborg Tumor.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    A Calcifying Epithelial Odontogenic Tumor is called a Pindborg

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  • 7. 

    A calcifying epithelial odontogenic tumor may originate from the stratum intermedium of the enamel organ.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A calcifying epithelial odontogenic tumor is a rare benign tumor that originates from the tooth-forming tissues. The stratum intermedium is a layer of cells within the enamel organ, which is responsible for the formation of enamel. Therefore, it is possible for a calcifying epithelial odontogenic tumor to originate from the stratum intermedium of the enamel organ. This statement is true.

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  • 8. 

    The anterior maxilla is usually the location affected in a calcifying epithelial odontogenic tumor.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Mandible twice affected, usually molar ramus area

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  • 9. 

    A calcifying epithelial odontogenic tumor is usually from impacted teeth and looks like a bullseye target from concentric calcific deposits.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A calcifying epithelial odontogenic tumor is a type of tumor that typically originates from impacted teeth. It is characterized by the presence of concentric calcific deposits, which give it the appearance of a bullseye target. Therefore, the statement that a calcifying epithelial odontogenic tumor usually looks like a bullseye target from concentric calcific deposits is true.

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  • 10. 

    Calcifying Epithelial Odontogenic Tumors have a high recurrence rate and can metastasize through the lymph nodes.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    20% recurrence, does not metastisize

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  • 11. 

    An adenomatoid odontogenic tumor can look like a dentigerous cyst because it is usually around the crown of an impacted tooth.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    An adenomatoid odontogenic tumor is a benign tumor that typically occurs around the crown of an impacted tooth. This location and appearance can be similar to that of a dentigerous cyst, which is another type of benign cyst that forms around the crown of an impacted tooth. Therefore, it is true that an adenomatoid odontogenic tumor can resemble a dentigerous cyst.

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  • 12. 

    An odontogenic myxoma is a mixed tumor from both epithelial and mesenchymal origin.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Mesenchymal tumor

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  • 13. 

    A central odontogenic fibroma mimics dental pulp or follicular connective tissue microscopically.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    An odontogenic myxoma does

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  • 14. 

    An odontogenic myxoma can recur because it has a loose, gelatinous consistency and absence of encapsulation.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    An odontogenic myxoma can recur because it has a loose, gelatinous consistency and absence of encapsulation. This means that the tumor is not contained within a defined boundary, making it more likely to spread and regrow after treatment. Additionally, the gelatinous consistency can make it difficult to completely remove the tumor during surgery, increasing the chances of recurrence. Therefore, it is true that an odontogenic myxoma can recur.

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  • 15. 

    A central odontogenic fibroma is the central counterpart to a peripheral odontogenic fibroma.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is true because a central odontogenic fibroma is indeed the central counterpart to a peripheral odontogenic fibroma. This means that both types of fibromas are related and have similar characteristics, but the central odontogenic fibroma occurs in the central part of the jawbone, while the peripheral odontogenic fibroma occurs in the soft tissues surrounding the teeth.

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  • 16. 

    A cementoblastoma has mesenchymal origin.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A cementoblastoma is a rare benign tumor that arises from the cells responsible for forming cementum, which is a hard tissue that covers the roots of teeth. These cells, known as cementoblasts, have a mesenchymal origin. Mesenchyme is a type of embryonic connective tissue that gives rise to various structures, including bone, cartilage, and other connective tissues. Therefore, it is correct to say that a cementoblastoma has a mesenchymal origin.

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  • 17. 

    A cementoblastoma can replace the root of a tooth showing an opaque lesion surrounded by an radiolucent ring.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A cementoblastoma is a rare benign tumor that originates from the cells responsible for forming the cementum, which is the hard tissue that covers the root of a tooth. This tumor can cause the replacement of the root of a tooth, leading to an opaque lesion on a dental X-ray. The opaque lesion is surrounded by a radiolucent ring, which is an area of decreased density. Therefore, the statement that a cementoblastoma can replace the root of a tooth showing an opaque lesion surrounded by a radiolucent ring is true.

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  • 18. 

    A cementoblastoma can be treated with enucleation or surgical excision.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Tooth must be sacrificed completely

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  • 19. 

    A periapical cementoosseous dysplasia is a benign neoplasm.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    a reactive or dysplastic process

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  • 20. 

    A periapical cementoosseous dysplasia is an uncommon occurrence of a radiolucency at the apex of a non-vital tooth.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    very common and tooth is vital

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  • 21. 

    A florid cementoosseous dysplasia usually occurs in black females and is an excessive occurrence of periapical cementoosseous dysplasia.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A florid cementoosseous dysplasia is a condition that typically affects black females and involves an excessive occurrence of periapical cementoosseous dysplasia. This means that there is an abnormal growth of cementum and bone in the tooth roots and surrounding areas. Therefore, the statement that a florid cementoosseous dysplasia usually occurs in black females and is an excessive occurrence of periapical cementoosseous dysplasia is true.

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  • 22. 

    A periapical cementoosseous dysplasia originates from remnants of the reduced enamel epithelium.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    mesenchymal origin

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  • 23. 

    An ameloblastic fibroma is composed of neoplastic epithelium and mesenchyme.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Ameloblastic fibroma is a benign tumor that originates from the odontogenic epithelium and mesenchyme. It is characterized by the presence of neoplastic epithelial cells and mesenchymal cells. Therefore, the statement that an ameloblastic fibroma is composed of neoplastic epithelium and mesenchyme is true.

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  • 24. 

    An ameloblastic fibroma commonly occurs in black females and can be found in all quadrants of the mouth.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Periapical cementoosseous dysplasia, ameloblastic fibroma is found in children and young adults

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  • 25. 

    An opaque focus in an ameloblastic fibro-odontoma is due to an odontoma.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    An ameloblastic fibroma has radiolucency

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  • 26. 

    The most common odontogenic tumor is an odontoma and is a mixed tumor.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The most common odontogenic tumor is an odontoma, which is a mixed tumor. This means that it is composed of different types of dental tissues such as enamel, dentin, and cementum. Odontomas are usually benign and can occur in both the primary and permanent dentitions. They are often discovered during routine dental X-rays and may cause disturbances in tooth eruption or alignment. Treatment usually involves surgical removal, and the prognosis is generally excellent.

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  • 27. 

    A complex odontoma shows numerous miniature teeth, usually in the anterior jaw.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Compound, complex shoes amorphous conglomerations of hard tissue (enamel/dentin)

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