Background: Class II furcation defects indicate a specific common clinical problem and the need for effective therapy. Connective tissue grafts have been used as a barrier in a limited number of previous reports for protecting and stabilising wounds of furcation sites during the healing period, so as to support bone regeneration when closing mandibular Class II furcation defects. The present case report series was carried out to compare the effectiveness of connective tissue grafts (CTGs) as a barrier with bioresorbable collagen membrane in the treatment of mandibular Class II furcation defects in humans.
Study design: Twenty chronic periodontitis patients with a single Class II furcation defect on a buccal or lingual surface of mandibular teeth were included in the study. Vertical probing pocket depth (V-PPD), vertical relative attachment level (V-RAL) and relative gingival margin level (RGML) were recorded at baseline and 6 months post-surgery.
Results: After 6 months, the mean V-PPD reductions observed in the test group (2.43±0.46mm) and control group (2.21±0.61mm) were statistically significant. However, the difference was not statistically significant between the test group and the control group. In both the test and the control group, the mean RAL gains at 6 months were statistically significant, compared with the baseline data. At 6 months, the mean V-RAL gains in the test group (2.08±0.67) were greater than the control group (1.73±1.15), but the difference was not statistically significant (P=0.06). Complete closure of furcation was achieved at one site in the test group compared with no sites in the control group.
Conclusion: It can be concluded that 6 months after surgery, both connective tissue graft as a barrier, and resorbable collagen membrane resulted in improvement in terms of V-RAL gains and reduction in V-PPD and horizontal probing depth.
Keywords: Class II furcation, collagen membrane, subepithelial connective tissue graft