PMC5203891_01
Initial radiograph of the maxillary right central incisor.
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By radiographic examination a circumscribed lesion in the apical region of the maxillary right central incisor with presumed periapical cyst and an incomplete apical root formation was observed (Figure 1).
Intracanal medication of calcium hydroxide.
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Intracanal medication of calcium hydroxide (Callen, SS White, Rio de Janeiro, RJ, Brazil) was applied prior to the surgical procedure and sealed with glass ionomer restorative material (Figure 2).
Postsurgical aspect.
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Radiographically, the operated area and the need of new root application of calcium hydroxide paste were evident (Figure 3).
Root canal final filling with a MTA-based endodontic cement.
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After the removal of intracanal calcium hydroxide, the root canal final filling with cone rolled technique associated with a MTA-based endodontic cement was performed (MTA-Fillapex, Angelus, Londrina, PR, Brazil) (Figure 4).
Crown darkening of maxillary right central incisor.
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The crown darkening of tooth maxillary right central incisor (11) observed by the color scale (Vitapan 3D-Master, Vita Zahnfabrik GmbH, Germany) provided the use of dental office whitening technique (Figure 5).
Final result after bleaching procedure.
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Three applications of whitening product were performed during forty-five minutes in one unique clinical session, and, at the end of the proposed treatment, a satisfactory change was observed in the chromatic aspect in the color of the central incisor (Figure 6).