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Abstract
Twenty-four Endosteal root form screw-type one-pace small diameter implants with (2.4 mm) diameter and 10mm length were inserted at the symphyseal area of six completely edentulous patients to support a mandibular overdenture. The patients were divided into two groups the implants in the first group were immediately loaded and the denture base section opposite to the four implants was relieved to accommodate the soft silicone liner. While for the second group, relief of the denture base opposite to the implants was made for about forty-five days after surgery after that period soft silicone liner was added to the denture as the first group.
The effect of the immediate and delayed immediate loading on the implant’s supporting structure was radiography evaluated. Periapical radiograph using Parallel technique were conducted to monitor the changes in crestal bone height, using Rinn film Holders. The periapical radiographs were taken at the time of insertion of the implant, 3, 6 and 12 month after insertion.