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Radiology
Explanation: Cervical burnout is an optical illusion that occurs on dental radiographs, where the area around the cementoenamel junction appears darker due to the difference in density between the enamel and the underlying dentin. This can lead to mi
Prosthodontics
When a patient closes in centric occlusion, if the lower jaw is placed anteriorly in relation to the upper jaw, it is called pre-normal occlusion.