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

Figure 1 from Regenerative Endodontic Treatment: Report of Two Cases with Different Clinical Management and Outcomes

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International Association of Endodontic Education, Research and Practice

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Periapical radiograph

The Effect of Mineral Trioxide Aggregate on the Periapical Tissues after Unintentional Extrusion beyond the Apical Foramen. - Abstract - Europe PMC

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

Preoperative radiograph of tooth, number 36, note the good height of

Figure 1 from Regenerative Endodontic Treatment: Report of Two Cases with Different Clinical Management and Outcomes

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

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

Clinical and radiographic outcomes of regenerative endodontic procedures for traumatized permanent necrotic teeth with apical periodontitis and external root resorption - Lu - 2023 - International Endodontic Journal - Wiley Online Library

A) Preoperative radiograph on tooth #21 with extensive resorption;