The disto-mesial angle periapical technique for a mandibular 3rd molar involves positioning the x-ray film or sensor inside the patient's mouth near the tooth. The x-ray beam is directed from the distal side and captures an image to view the distal and mesial angles.
To apply the disto-mesial angle periapical technique on a mandibular 3rd molar, the dentist would position the x-ray film or sensor inside the patient's mouth, near the area of the tooth in question. The x-ray beam would be directed at the tooth from the distal (back) side and pass through the entire tooth, capturing an image on the film or sensor. This technique allows for a clear view of the distal and mesial angles of the mandibular 3rd molar.
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