In (Group I) The healing abutment was first removed and the gingival collar irrigated with 0.12% chlorhexidine. The locator attachment was inserted into the implant fixture and torqued to 30 N cm, leaving the attachment base protruding at least 2 mm above the tissue surface. The denture surface of the denture was further relieved to increase the spaces surrounding the attachment assembly and to accommodate the self-curing denture base resin. The denture was inserted after the relief space was filled with resin, and the patient was guided to occlude at centric occlusion. The denture was removed after the resin was cured and adjusted accordingly to assure a comfortable fit.