Purpose: A clinical case is presented demonstrating the utilization of intraoral welding (syncrystallizer) to stabilize immediate one-pieceimplants during osteointegration for a fixed full-arch upper and lower rehabilitation with flapless surgical approach.Materials and methods: The surgical and prosthetic technique including postextraction placement of one-piece implants, modification ofthe implants intraorally for prosthetic angulation, and the method of initial bracing the implants, is described. The procedure has beensubdivided by arch, with each arch being treated in a similar manner during a single surgical appointment for the full mouth implanttreatment.Outcome: No complications are reported, and no implant has been lost one and a half years following surgical placement and restoration.The patient maintains appropriate oral hygiene and is pleased with the functional and esthetic results. The radiographs demonstratemaintenance of the osseous crestal levels with no peri-implant bone loss.Conclusions: The technique has demonstrated an effective aid for immediate implant stabilization allowing immediate loading withouthampering the osteointegration process.