PMC2883809_01
Series of radiographs showing placement of the barrier material and mineral trioxide aggregate. (a) Pre-operative radiograph showing remnants of calcium hydroxide paste; (b) 140 no. K-file placed to working length; (c) System of needles used as a carrier for placement of the barrier material and mineral trioxide aggregate; (d) Barrier material in place in area of the bony lesion; (e) Mineral trioxide aggregate compacted against the barrier material; (f) Backfill performed using thermoplasticized Gutta-percha in the next appointment; (g) Completed coronal restoration
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Radiographic examination revealed Ca(OH)2 paste in the canal and an incomplete formation of the root apex [Figure 1].
Snapshots taken under the dental operating microscope at x8 magnification; (a) Bleeding present at the apical exit of the foramen; (b) Calcium sulfate apical barrier in place; (c) Mineral trioxide aggregate compacted against the apical barrier
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One week later, the tooth was again isolated under rubber dam and the canals thoroughly irrigated with saline to wash out any remnants of the Ca(OH)2 dressing and 17% liquid EDTA Smear Clear (SybronEndo, CA, USA) for removal of the smear layer [Figure 2].
(a) Pre-operative photograph showing discolored maxillary right central incisor; (b) Post-operative photograph showing tooth restored with an all-ceramic crown
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AG, Germany) all ceramic crown was fabricated and cemented using RelyX-100 cement (3M ESPE, Germany). A 3-month follow-up revealed complete healing and bone formation [Figure 3].