الفهرس 
Introduction
Criteria of Membranes Used for GBROnly 14 pages are availabe for public view
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Abstract
the aim of this study was to evaluate dental implants placement in narrow edentulous ridge expanded by micro saw ridge splitting technique and expanders. ten patients, 5 males and 5 females with an age range from 40 to 65 years, were included in this study. the patients were selected for prosthetic rehabilitation using dental implants in a knife-edge ridge from oral surgery department, faculty of dentistry, mansoura university for all patients required surgical ridge splitting by microsaw and expansion by expanders prior to dental implant placement. a total number of 23 dental implants were placed. the expanded ridges were 3 in the maxilla, and 7 in the mandible. all patients received porcelain fused to metal restorations. patients were evaluated clinically and radiographically throughout the study period at 6, 12, 18, and 24 month. the clinical evaluation was measuring the implant stability, gingival health, peri-implant probing depth, plaque, and the amount of alveolar ridge expansion. the radiographic evaluation was measuring the marginal bone level. regarding implant success and survival, all implants placed in the expanded areas were within the limits of criteria proposed. the amount of ridge expansion measured as the difference between postoperative width and preoperative width ranged from 4.9 to 8.3 mm at the crestal point with a mean of 6.4 mm, 2.3 to 6.4 mm at the middle point with a mean of 4.6 mm, and 1.1 to 2.6 mm at the apical point with a mean of 1.9 mm.