Endodontic Retreatment of Maxillary Second Molar with Four Roots

Figure 1

(a) Panoramic radiograph of the referred patient. (b) Bitewing view of the interesting tooth, which showed a deep carious lesion. (c) X-ray after the first endodontic treatment. In the distal roots, two root fillings are visible, whereas only one filled root canal can be identified in the mesial roots. Note two mesial roots. Buccal: dotted line; palatal: scored line.

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(b)

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