Abstract
Background– Periodontal disease, if not interfered, will headway further with attachment loss involving the bifurcation or trifurcation of multirooted teeth. Furcation involved molar teeth respond less favorably to conventional periodontal therapy alone resulting into tooth loss. Combining osseous grafting with guided tissue regeneration membrane may enhance the response to treatment as compared to graft – only therapy by achieving mechanical stabilization and preventing micromovement of the bone graft material.
 
 Aim & Objective – To compare the efficacy of demineralized freeze-dried bone allograft alone or in combination with guided tissue regeneration membrane in the treatment of mandibular Grade II furcation defects.
 
 Materials & method - In this study a total number of 20 patients with 20 mandibular sites (buccal grade II furcation involvement) were evaluated. They were divided into two groups: Control group (bone graft only) and test group (bone graft + GTR). The clinical parameters assessed were vertical probing depth, horizontal probing depth and relative clinical attachment level.
 
 Results – In this study the statistical analyses comparing test and control sites at baseline revealed no significant differences between the two groups for any of the clinical parameters considered. At 6 month evaluation, significant difference was found between two groups regarding VPD, HPD and rCAL.
 
 Conclusion – It was concluded that there is a significant enhanced effect of using DFDBA bone graft in combination with GTR membrane over bone graft alone for the treatment of mandibular Grade II furcation defects.
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