Study design, settings, and ethical approval
This randomized split‐mouth double‐blinded clinical trial has utilized a superiority design with a 1:1 allocation ratio to compare two techniques, consisting of FGG, with and without i‐PRF application in the treatment of deep (≥3 mm) recessions affecting the anterior teeth. This study was undertaken from March 2021 and December 2021 at the Department of Periodontology, Faculty of Dentistry, Damascus University. The study protocol, questionnaires, and informed consent are in full accordance with the ethical guidelines of the Declaration of Helsinki. The research project was ethically approved by the Local Research Ethics Committee of the Faculty of Dentistry (UDDS‐24082020/SRC‐2794). The project was self‐funded and it was registered at the ISRCTN registry under ID number: ISRCTN46963726. This randomized clinical trial has been written according to the new CONSORT statement.