Figure 1

(A) The use of the periodontal probe to measure the vertical and horizontal dimensions of the surgically induced class II furcation defect in mandibular third (P3) and fourth (P4) premolars. (B) P3 defect filled with β-TCP only and P4 filled with β-TCP mixed in Aloe vera gel (C) Adaptation of trimmed collagen membranes over the grafted defects (D) Proper closure of the defects by the interproximal interrupted sutures.