To compare the regenerative effects of a demineralized freeze dried bone allograft (DFDBA) particulate in a biologic thermoplastic carrier (Regenafil) to the standard of care. To compare the regenerative effects of a demineralized freeze dried bone allograft (DFDBA) particulate in the treatment of intraosseous vertical defects following six months of healing. This was accomplished by evaluating clinical parameters including probing depth, attachment level and bleeding upon probing, using attachment level as the primary outcome variable.