The coronally advanced flap (CAF) has demonstrated controversial results in the treatment of gingival recession (GRs). The hypothesis of this study was that the CAF can partially reduce GR values over time. Root coverage (RC) in 24 Miller Class I GRs treated with a CAF by one experienced operator is presented with several periodontal parameters and postoperative morbidity. The mean percentage of RC was 80.35% at 3 months and 58.56% at 24 months; these differences were statistically significant. Keratinized gingival width, keratinized papillary gingival height, and gingival thickness were related to RC at 6 months. Postoperative pain was not statistically different over time. The CAF is not a predictable treatment for Miller Class I GRs after a 2-year follow-up period.