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Radiographic Stereotypes

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Radiolucent lesions seen on radiographs develop from both odontogenic and non-odontogenic structures. They characterize a broad spectrum of lesions (Avril et al., 2013) A sequential study of all the radiographic characteristics of the image helps ensure recognition and collection of all the information contained in the image and in turn improves the accuracy of interpretation. Analysis of any image should include: Step 1: Localize the anomaly Step 2: Assess the periphery and shape Step 3: Analyse the internal structure Step 4: Analyse the effects of the lesion on peripheral structures. A radiolucent lesion in the mandibular premolar region can have the following differential diagnosis; 1. Mental foramen: It is typically the anterior limit of the Inferior Alveolar Nerve. Due to …show more content…

Acute/Chronic apical periodontitis. 3. Periapical abscess: Small or large radiolucent area, ill-defined or diffused, may have cortical expansion in chronic situations. Associated tooth will have extensive caries or restoration involving or in close proximity to pulp space. Will have associated widening of the Periodontal Ligament Space. Pulp vitality tests are needed to confirm diagnosis. 4. Periapical granuloma: Well circumscribed, rounded (around apex). May have a thin radio-opaque border, tooth involved will most likely have deep carious lesion or restoration in close proximity to pulp space. Tooth will be non-vital. 5. Periapical cyst: Similar to a granuloma, the differentiation may not be possible unless other distinctiveness of a cyst, such as displacement of contiguous structures and expansion of the external cortical boundaries of the jaw, are seen. Lesions larger than 1 cm in diameter usually are radicular cysts. Other periapical radiolucencies to consider are an early stage of Periapical cemental dysplasia and an apical scar or a surgical defect because in such cases, normal bone may never fill in the defect completely. The patient’s history helps with the

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