Prosthetic Rehabilitation of Edentulous Flabby Ridge using Modified Hobkirk Window Impression Technique: A Case Report Mobile denture-bearing tissues in the form of flabby ridges are susceptible to displacement under masticatory forces, leading to loss of peripheral seal. Conventional impression-making techniques may record the mobile tissue in a distorted state, adversely affecting the retention and stability of the definitive prosthesis. Hence, this case report describes a modified impression technique used to record the flabby edentulous ridge in an undisplaced state to avoid compression and rebounding of the mobile tissue. A 49-year-old male patient reported to the Department of Prosthodontics complaining of difficulty in chewing food due to missing teeth for the past one year. Intraoral examination revealed the healed edentulous ridges with flabby, displaceable tissue on the residual ridge crest with respect to the anterior segment in both maxillary and mandibular arches. Prosthetic rehabilitation using removable complete denture prosthesis was planned with definitive impressions made using modified Hobkirk technique. A modified impression technique used to record the flabby edentulous ridge in an undisplaced state to avoid compression and rebounding of the mobile tissue gave a satisfactory outcome. This technique is simple to implement and adheres to the principles of preventive prosthodontics. Periodic follow-up showed that the patient was satisfied with the prosthesis.