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Gingival recession (GR) can cause aesthetic and functional problems. Using connective tissue graft (CTG) and coronally advanced flap (CAF) is considered the technique of choice for treating GR. Considering the morbidity resulting from taking CTG, different alternative biomaterials have been described, including plasma-rich fibrin (PRF) membrane. Studies in lower teeth are few because of the complexity of the factors that can influence obtaining less predictable outcomes.  Objective . To compare between CAF + PRF and CAF + CTG in the treatment of lower teeth Miller I gingival recession.  Methodology . Split-mouth included 26 isolated GR (13 in each side of the mouth). The left side was treated with CAF + PRF and the right side with CAF + CTG. Clinical variables, probing depth (PD), GR, keratinized tissue (KT), vestibular soft tissue thickness (VSTT), and teeth sensitivity (TS), were assessed at the baseline. GR, KT, VSTT, extraoral inflammation (EI), and patient discomfort (PaD) were assessed at 45 days.  Results . Statistically greater VSTT at 45 days was obtained using CAF + CTG ( p  < 0.05). Less EI and PaD were obtained using CAF + PRF ( p  < 0.05). No change was observed in GR, KT, and TS values in the intergroup or intragroup comparisons.  Conclusion . Even with the limitations of this study, using PRF and CTG in lower teeth demonstrated an improvement in terms of root coverage, although it was without a total percentage of coverage. Regarding the VSTT, better results were obtained using the CTG + CAF, suggesting eventually long-term stable clinical results. We suggest a combined technique for future investigations.

Treatment of Miller I Mandibular Gingival Recessions Using PRF vs. Connective Graft