Abstract: The application of static surgical guides significantly enhances the accuracy and predictability of implant surgery in edentulous jaws. However, when monolithic guides are used in complex bone reduction procedures, osteotomy and implant placement often need to be performed in separate stages, leading to suboptimal treatment efficiency. This article reports a case of full-arch implant rehabilitation in a completely edentulous patient. A fully digital modular surgical guide was utilized for the mandible. Its modular design allowed for staged intraoperative assembly and use, enabling integrated guidance for both bone reduction and implant placement. Additionally, based on the digitally planned pick-up technique, the temporary prosthesis was designed and fabricated preoperatively, followed by immediate loading after surgery. The definitive prosthesis was delivered six months later using a digital impression. A three-year follow-up showed favorable implant osseointegration, stable restorative outcomes, and high patient satisfaction both functionally and esthetically. This digital modular guide protocol effectively improved the efficiency and clinical outcomes of complex edentulous jaw rehabilitation and may serve as a reference for the management of similar cases.

Key words: Edentulous jaws, Implant rehabilitation, Digital, Modular surgical guide