Purpose: Severe posterior maxillary bone resorption often requires sinus augmentation; however, medically compromised elderly patients may be at increased risk of surgical morbidity and prolonged treatment. This report describes full-arch rehabilitation using localized ridge augmentation and anterior implant placement without sinus augmentation.

Case Presentation: A 72-year-old woman with arrhythmia, hypertension, and type 2 diabetes mellitus presented with maxillary partial edentulism and poor denture retention. Clinical and radiographic examinations revealed severe posterior maxillary ridge resorption and insufficient residual bone height. Considering the patient’s systemic condition, sinus augmentation was avoided. Localized ridge augmentation was performed, followed by staged placement of four implants in the anterior maxilla. Definitive rehabilitation consisted of an implant-supported zirconia fixed prosthesis in the anterior region and an implant-crown-retained removable partial denture (ICRPD) in the posterior region.

Results: During approximately 12 months of follow-up, no complications such as pain, infection, implant mobility, or peri-implant pathology were observed. Radiographic evaluation demonstrated stable peri-implant bone levels with minimal marginal bone loss. The patient reported satisfactory masticatory function, esthetics, and prosthesis stability.

Conclusion: Localized ridge augmentation combined with anterior implant placement may provide a predictable and minimally invasive alternative to sinus augmentation in medically compromised patients with insufficient maxillary bone volume. Full-arch rehabilitation using an ICRPD can reduce surgical burden while maintaining favorable functional and esthetic outcomes.