lecture 3

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dentistry oral Radiology Flashcards on lecture 3, created by Haneen Kokash on 11/02/2021.
Haneen Kokash
Flashcards by Haneen Kokash, updated more than 1 year ago
Haneen Kokash
Created by Haneen Kokash about 3 years ago
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Question Answer
cherubism: bilateral origin in the midramus region the mandibular molars have been displaced anteriorly on both sides. it is central giant cell lesion
round lesion attached to cemento-enamel junction (CEJ) Corticated Border
ameloblastoma a benign lesion periphery sup the alveolar canal canal shifted/displaced inf oval in shape teeth seperated or displacing the molars
salivary gland defect or stafne bone cavity below the canal not odontogenic
origin in inf canal it self could be neural(if symmetrical expansion) or vascular could be like hemangioma or neurofibroma
no cortical periphery so related to sinus like mucous retention psuodocyst Dome-shaped, smooth in appearance.
multiple malignant myeloma multiple,small punched-out lesions
The most common malignancy squamous cell carcinoma
Punched-Out Border well defined no bone analogous to hole surrounding has a normal appearance ex: multiple myeloma
Corticated Border well defined margin thin, uniform radiopaque line of reactive bone at the periphery of a lesion commonly seen with cysts and benign slow-growing tumors
Sclerotic Margin wider zone of transition made up of a thick radiopaque border of reactive bone not uniform seen with periapical osseous dysplasia indicate a very slow rate of growth or the potential for the lesion to stimulate the production of surrounding bone
Sclerotic Margin periapical osseous dysplasia
Soft Tissue Capsule well defined A radiopaque lesion presence of a radiolucent line This soft tissue capsule may be seen in conjunction with a corticated periphery observed with odontomas and cementoblastomas
  radiopaque mass associated with the root of the first bicuspid prominent radiolucent periphery (arrows) is characteristic of a soft tissue capsule of this benign cementoblastoma.
so this is benign cementoblastoma.
well defined Thin, radiolucent periphery indicating a soft tissue capsule internal radiopaque structure odontoma
so this is odontoma
Blending Border: ill defined border gradual-wide zone of transition Examples : sclerosing osteitis and fibrous dysplasia
sclerosing osteitis ill defined border - gradual
Invasive Border: ill defined border of radiolucency with few or no trabeculae wide zone of transition associated → rapid growth and can be seen with malignant lesions.
ill defined Invasive border squamous cell carcinoma(malignant) severe periodontitis, or due to LCH – langerhans cell histocytosis)
malignant neoplasm, in this case a lymphoma ill defined Invasive border
Scalloped shape keratocyst (benign)
oval shaped residual cyst
orange peel appearance ONLY associated with fibrous dysplasia.
giant cell granulomas
ameloblastoma - Periapical image small, soap bubble—like compartment
ameloblastoma - Axial CT
myxoma
malignancy lesion widening of the PDL.
malignancy resulting in symmetrical expansions (in this case it is asymmetrical expansions). This is an example of a lymphoma
osteomyelitis. new periosteal bone indication of inflammation of bone
sunray appearance or codman triangles indication of osteomyelitis sunray appearance: 1. Malignancy (usually osteosarcoma, condrosarcoma). 2. Benign tumor like hemangioma
sunray appearance: 1. Malignancy (usually osteosarcoma, condrosarcoma). 2. Benign tumor like hemangioma
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