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Dental Radiography Interpretation
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Root Fracture
A disruption of the tooth structure that may appear as a radiolucent line across the tooth root.
Dental Caries
Manifest as radiolucent areas on the tooth, indicating decay caused by bacterial processes.
Root Resorption
The loss of tooth root structure, appearing as an irregular or blunted root end, which may result from trauma, reimplantation, or orthodontic movement.
Radiopacity
Indicates the presence of a substance that is resistant to the passage of X-rays, often suggestive of metal restorations or calcified structures.
Odontoma
A radiopaque lesion that may contain tooth-like structures within it, representing a benign odontogenic tumor made up of enamel and dentin.
Impacted Tooth
A tooth that is visibly prevented from erupting into the proper position, which may cause displacement or resorption of adjacent teeth.
Lamina dura
A dense radiopaque line surrounding the tooth root, indicating healthy periodontal bone support.
Pulp Chamber and Root Canal
Central radiolucent areas within the tooth where the nerve and blood vessels are located.
Cemento-enamel Junction (CEJ)
The boundary where the enamel, which covers the tooth crown, and the cementum, which covers the root, meet.
Radiolucency
Suggests an area that allows X-ray penetration, typically indicative of decay, cysts, or periodontal disease.
Periapical Lesion
A radiolucent area at the apex of a tooth root, often indicative of a dental abscess or cyst.
Crown to Root Ratio
The proportion of the visible crown to the length of the root(s), which helps assess periodontal stability.
Interproximal Bone Loss
A reduction in the height of the alveolar bone between two teeth, typically indicating periodontal disease.
Furcation Involvement
Radiolucent areas in the bone around the branching point of a multi-rooted tooth, indicating advanced periodontal disease.
Periodontal Ligament (PDL) Space
A thin radiolucent line surrounding the tooth root that represents the space occupied by the periodontal ligament.
Amalgam Overhang
Excessive amalgam restoration material extends beyond the crown of the tooth, creating an area that can trap plaque and debris.
Condensing Osteitis
A localized area of increased bone density, often at the apex of an infected tooth, indicative of chronic inflammation.
Calculus
Calcified dental plaque that appears as irregular radiopacities, which may be found on the surfaces of teeth or within the periodontal pocket.
Dentigerous Cyst
A radiolucent lesion that surrounds the crown of an unerupted or developing tooth, potentially leading to delayed eruption or displacement.
Bifurcation
The area where a multi-rooted tooth splits into separate roots, which can be the site of furcation involvement in gum disease.
Periapical Radiolucency
A dark area at the end of a tooth root indicating a pathologic change, such as a cyst, granuloma, or abscess at or around the tooth apex.
Mixed Radiolucent-Radiopaque Lesion
A lesion that has both dark and white areas within it, suggesting a tissue density that varies in consistency or composition.
Enamel Pearl
A small, round radiopacity located on root surfaces that consists of ectopic enamel.
Maxillary Sinus
An air-filled cavity above the upper teeth that can appear radiopaque if infected (sinusitis) or may show the proximity to upper teeth roots.
Zygomatic Arch
A bony arch on the side of the skull that can sometimes be confused with a foreign body or pathology on dental X-rays.
Mandibular Canal
A radiolucent band outlined by two thin radiopaque lines that runs through the mandible, allowing passage of the inferior alveolar nerve and blood vessels.
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