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J Conserv Dent. 2018 Nov-Dec;21(6):691-695. doi: 10.4103/JCD.JCD_286_18.

Report of a case of platelet-rich fibrin-mediated revascularization of immature 12 with histopathological evaluation.

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1
Department of Conservative Dentistry and Endodontics, Dr. R. Ahmed Dental College and Hospital, Kolkata, West Bengal, India.

Abstract

The procedure of regeneration has shown promising results in the treatment of nonvital teeth with immature apices. However, the tissue being regenerated can only be confirmed through histological examination. This report describes an immature nonvital 12 with apical pathology which was treated via revascularization using 3% NaOCl and 17% ethylenediaminetetraacetic acid as irrigants; Ca(OH)2 as intracanal medicament and platelet-rich fibrin (PRF) as scaffold. On follow-up at 6 and 12 months, healing of periapical lesion, dentinal thickening, and apical closure with a canal exit forming distally were evident. The tooth, however, got fractured and was subsequently extracted at 12 months and sent for histopathological examination. It was revealed that a collagenous matrix for forming hard tissue similar to acellular cementum with a diffuse area of calcification could be seen in pulp space being attached with root canal dentin walls, suggesting that PRF may yield favorable outcomes in regenerative endodontic procedures.

KEYWORDS:

Hard tissue matrix; histopathology; platelet rich fibrin; revascularization

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