On a mandibular periapical radiograph, the mandibular canal is a ____ band that appears below or superimposed over the apices of the mandibular ____ teeth.

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On a mandibular periapical radiograph, the mandibular canal appears as a radiolucent band that is located below or superimposed over the apices of the mandibular molars. The canal may not be visible on radiographs of incisors or canines. The radiographic appearance of the mandibular canal can help identify the location of important anatomic landmarks, such as the mental foramen, and can aid in the diagnosis and treatment of pathologic conditions that involve the mandibular canal.

On a Mandibular Periapical Radiograph, the Mandibular Canal Is a ____