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Radiolucent Lesions, Citation: pg. 462-86 Delong, L & Burkhart, N.…
Radiolucent Lesions
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Neoplasms
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Odontogenic Myxoma
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Characteristics: swelling can occur depending on size, can be uni- or multi-locular, may have scalloped appearance, have a “step ladder” or “honeycombed: appearance, margins may be well defined or may be diffuse,
Dental Implications: enlarged dental follicles or dental papilla of a developing tooth may be mistaken for myxomas upon microscopic examination, can become quite large than causes tooth displacement
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Ameloblastic Fibroma
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Characteristics: swelling can occur depending on expansion, no pain, occasional calcified material containing enamel and dentin (classified as an odontoma, identified as ameloblastic fibroodontoma), normally well-defined and associated with an unerupted tooth
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Langerhans Cell Disease
Etiology: unknown, involves proliferation of Langerhans cells which normally reside in the epidermis; bone marrow; lymph nodes; and mucosa
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Characteristics: poor healing is common, bone lesions resemble a “punched-out” appearance, all bones of the body may be affected, dermatologic conditions evident, premature loosening and exfoliation of teeth in children
Dental Implications: lesions that occur periapically can be confused with periapical cyst or granulomas, tooth vitality would still be present
Treatment/Prognosis: depends on involvement of disease and age of pt, conservative surgical treatment is sometimes the ONLY treatment, chemotherapy for more extensive disease involvement, bone marrow transplant may be done
Developmental Cysts
Eruption Cyst
Etiology: accumulation of fluid or blood between the crown of an erupting tooth and the reduced enamel organ due to trauma
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Characteristics: tissue of eruption cyst may have a darker appearance and appear elevated, seen as a smooth bluish swelling (dome-like) on crest of alveolar ridge, radiographically an enlarged follicular space
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Treatment/Prognosis: no treatment, on occasion removal of the overlying tissue could facilitate a quicker eruption
Dentigerous Cyst
Etiology: cystic change in dental follicle following crown formation when the follicle separates from the crown of tooth
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Characteristics: no symptoms of pain or discomfort, well circumscribed, unilocular (sometimes multi), not calcified so lesion is completely lucent
Dental Implications: delayed tooth eruption, has potential to displace teeth and resorb roots
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Citation: pg. 462-86 Delong, L & Burkhart, N. (2019). General and Oral Pathology for the Dental Hygienist. Third Edition. Philadelphia: Wolter Kluwer.