The coronally advanced flap in the treatment of bilateral multiple gingival recessions with or without tunneling the maxillary midline papilla : A randomized clinical trial

Twenty healthy subjects with at least two Miller Class I gingival recessions (RECs) crossing the midline in the maxilla were enrolled for the study. Fifty-six (mean initial REC = 2.3 ± 0.9 mm) and 75 (mean initial REC = 2.3 ± 1.1 mm) RECs were treated in the test and control groups, respectively. All of the cases were treated by means of CAF without vertical releasing incisions: ten were randomly assigned to the test group and ten to the control group. Clinical evaluations in terms of REC were performed at baseline (preoperative) and after one year. Differences in REC reduction (RECred) and in complete root coverage (CRC) between the two groups were statistically analyzed both for all of the RECs of each treatment group and for the central incisors only.