The following clinical measurements were taken at the same day of the surgery (baseline) at 6 and 12 months follow-up: 1) Plaque index (PI); 2) Gingival index (GI); 3) Bleeding on probing (BOP); 4) Probing pocket depth (PPD); 5) Gingival recession (GR); 6) Clinical attachment level (CAL) and 7) Mobility (M). PPD, GR and CAL were recorded at the deepest site per tooth: using the same periodontal probe (Hu-friedy CP-8) and a customized stent with guiding grooves.