Synergistic application of platelet-rich fibrin and mineral trioxide aggregate for apexification: A scoping review
Traumatically induced immature teeth, characterized by open apices, pose significant challenges in endodontic management, as the lack of an apical barrier predisposes to overextension of the filling material, microbial leakage, and compromised apical sealing. Mineral trioxide aggregate (MTA) has been extensively used for apexification due to its excellent sealing ability and biocompatibility; however, it mainly functions as a mechanical plug and lacks true biological integration with periapical tissues, thereby limiting its regenerative potential. In contrast, platelet-rich fibrin (PRF), which is enriched with autologous growth factors, enhances cellular responses, promotes tissue regeneration, and provides a biologically favorable environment for apical healing. This scoping review aims to critically synthesize the current evidence on the combined use of PRF and MTA for apexification in immature teeth with open apices, with an emphasis on the biological rationale underlying their proposed synergy and the key knowledge gaps relevant to future clinical translation. The scoping review was conducted across ScienceDirect, PubMed, and Scopus, focusing on the biological mechanisms and clinical outcomes of PRF and MTA in apexification, particularly in reducing extrusion, improving sealing, and supporting periapical tissue regeneration. Thirteen studies were included, showing that PRF promotes mineralized tissue formation through increased proliferation and lineage-specific differentiation of progenitor cells within periapical tissues, whereas its fibrin matrix prevents the overextension of MTA and provides a scaffold that creates a favorable microenvironment for cellular activity. The combination of MTA and PRF was found to enhance biological sealing and support hard tissue formation at the apex, facilitating a more controlled and biologically integrated apexification process. Nevertheless, further clinical studies with larger cohorts and extended follow-ups are warranted to confirm therapeutic efficacy and establish standardized clinical protocols.
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