case_images: PMC5203891_01
case_images: Initial radiograph of the maxillary right central incisor.
case_images: CRID2016-3830813.001.jpg
case_images: PMC5203891_01_CRID2016-3830813.001.jpg
case_images: fig1
case_images: 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).
case_images: Intracanal medication of calcium hydroxide.
case_images: CRID2016-3830813.002.jpg
case_images: PMC5203891_01_CRID2016-3830813.002.jpg
case_images: fig2
case_images: 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).
case_images: Postsurgical aspect.
case_images: CRID2016-3830813.003.jpg
case_images: PMC5203891_01_CRID2016-3830813.003.jpg
case_images: fig3
case_images: Radiographically, the operated area and the need of new root application of calcium hydroxide paste were evident (Figure 3).
case_images: Root canal final filling with a MTA-based endodontic cement.
case_images: CRID2016-3830813.004.jpg
case_images: PMC5203891_01_CRID2016-3830813.004.jpg
case_images: fig4
case_images: 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).
case_images: Crown darkening of maxillary right central incisor.
case_images: CRID2016-3830813.005.jpg
case_images: PMC5203891_01_CRID2016-3830813.005.jpg
case_images: fig5
case_images: 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).
case_images: Final result after bleaching procedure.
case_images: CRID2016-3830813.006.jpg
case_images: PMC5203891_01_CRID2016-3830813.006.jpg
case_images: fig6
case_images: 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).