I have a 52-year old male, good overall health with an otherwise intact dentition. He has periodontal disease localized in the mandibular anterior only. I have treatment planned this patient for extraction of #23-26. After the site has healed, I am planning on placing 2 implants in the 23 and 26 sites and restoring with a 4-unit bridge. The mandibular area will require a graft. In the past, I have treated similar defects with particulate graft, tent screws, and collagen extended membrane. I am looking for opinions on any alternative ways to treat this. Putty? Different type of membrane? What do you recommend?