A) Preoperative periapical radiograph of tooth #21. Note the

Preoperative periapical radiographs for tooth #21. A, 20 years earlier.

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Mineral trioxide aggregate apexification: a 20‐year case review - Bogen - 2021 - Australian Endodontic Journal - Wiley Online Library

Case 1: teeth #8 and #9. (A ) The preoperative periapical radiograph

A mature carious tooth (#21) with a periapical radiolucency. (A) The

Case 3: Tooth no. 21- (A) Preoperative radiograph; (B–D) Radiographs at

Pre-operative X-ray: suggested or obligatory - Style Italiano Endodontics

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Periapical radiographs of failed cases. (A1) Initial periapical