![]() ![]() This lesion is usually diagnosed with panoramic radiographs, and is often found in previous extraction sites. A notable example of this finding is the focal osteoporotic bone marrow defect (Figure 2). Some lesions appear completely radiolucent, while a small number present with a residual trabecular pattern of bone within the lesion. When a pericoronal space of an unerupted tooth is greater than 5 mm and the roots are fully formed, the lesion is most likely a dentigerous cyst or other odontogenic cyst, rather than a hyperplastic dental follicle (Figure 1). Anatomical features can alter the viewer’s perception and mimic pathology. Intraoral imagery has about 4% magnification, but it can be affected by a variety of technicalities related to placement of the sensor and angulation of the X-ray beam. Panoramic imagery is magnified 20% to 25%, and is notorious for distortion. Differences in technique, as well as X-ray beam geometry between panoramic and intraoral radiography units, must also be taken into account. The width of the follicular space depends on the radiographic modality used. Patient age, degree of root formation, size of the follicle and tooth location are important factors when forming a differential diagnoses for a pericoronal radiolucency. The majority of these cases represent hyperplastic dental follicles. One of the most common clinical observations seen among radiolucent lesions is the pericoronal radiolucency around unerupted teeth. In general, findings in dental radiographs are classified as radiolucent, radiopaque or mixed density, depending on their appearance when compared to the adjacent bone. As such, clinicians must continually refine their diagnostic skills and knowledge of anatomy in order to recognize the most common variations seen in normal dental radiographs - as well as the most frequently encountered incidental findings. Oral radiology has transformed the practice of dentistry and broadened the horizons of all dental specialties, molding the dental profession into an ever-changing and dynamic field. The views expressed in this article are those of the authors and do not reflect the official policy of the U.S. Identify the most frequently encountered findings in dental.List the factors that affect a clinician’s ability to make a.Discuss the classifications of findings in dental radiography.OBJECTIVESĪfter reading this course, the participant should be able to: This 2 credit hour self-study activity is electronically mediated. The authors have no commercial conflicts of interest to disclose. This course was published in the March 2016 issue and expires 03/31/19.
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