fig2

Figure 2. Surgical procedure. (A) The buccal flap design was comparable to the CAF described for the treatment of multiple gingival recessions in mucogingival surgery, characterized by submarginal split-thickness surgical papillae at the interdental area neighboring the defect. Supracrestal soft tissue situated over the bony defect was elevated full thickness. The elevation of the buccal flap proceeded split thickness to enable the coronal advancement of the flap. (B, C) The collagen matrix was sutured at the base of the anatomical papillae of the teeth neighboring the defect, whereas apically it was firmly attached to the periosteum located over the buccal bone apical to the bone defect using single interrupted 7-0 polyglycolic acid sutures. The collagen matrix could act as a buccal missing wall of the defect, and at the same time it could improve root coverage of the neighboring teeth with respect to CAF alone. CAF: Coronally advanced flap.