Thirty-six implants were placed into 2 patients with fully edentulous jaws. Provisional prosthesis were placed into 34 of 36 implants which implant stability quotient（ISQ） was larger than 60 at the time of fixture placement. After 3 months, osseointegration of implants completed and permanence reparations were made. None implant lost among 18 months to 26 months since the immediate restoration was loaded. The average accumulate bone loss was 0.41 mm.
