PMC4792059_01
(a) Preoperative radiograph showing periapical radiolucency and immature roots in teeth number 11, 21. (b) Platelet-rich fibrin membrane. (c) Mineral trioxide aggregate apical stops formed against a barrier of platelet-rich fibrin membrane and (d) Postoperative intraoral periapical radiograph showing healing
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F1
Radiographic examination showed immature right and left maxillary central incisors with open apices and periapical radiolucency [Figure 1a]. The PRF clot was retrieved, and fluids were squeezed out to obtain a PRF membrane [Figure 1b]. Apical stops of approximately 3-4 mm thickness of MTA were formed and confirmed radiographically [Figure 1c]. Follow-up radiograph at 6 months interval showed good healing at the apex [Figure 1d].
PMC4792059_02
(a) Preoperative radiograph showing inadequately obturated tooth number 21, and open apex with enlarged canal space and reduced dentinal wall thickness in tooth number 22 and (b) Postoperative radiograph at 12 months showing complete healing
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F2
A periapical radiolucency of about 1.5 cm x 1.5 cm was also seen in relation to this tooth [Figure 2a]. Periapical radiograph at 12 months revealed reduction in radiolucent area at the apical region [Figure 2b].
PMC4792059_03
(a) Preoperative radiograph of tooth number 21 showing periapical radiolucency and immature apex in tooth number 21 and (b) postoperative radiograph at 1-year showing formation of calcific apical barrier and resolution of radiolucency
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F3
Intraoral periapical radiographic examination showed periapical radiolucency measuring approximately 10 mm x 8 mm and an open apex in tooth number 21 [Figure 3a].