This clinical case report presents a technique utilizing autogenous cancellous bone from maxillary tuberosity to fill two infrabony defects distal to mandibular molars in a patient diagnosed with aggressive periodontitis. After debridement a 6 mm defect was present distal to mandibular right first molar and 6.5 mm defect was present distal to mandibular second molar of same side. Autogenous bone graft from maxillary tuberosity was placed in both the defects. There was a significant bony fill present six months post surgery and probing depth reduced by 7mm on both the sites.