Female patient, 51 years old, healthy, full edentulous for 27 years, when extracted the maxillary anterior teeth and replaced them immediately. Then was rehabilitated with upper and lower removable denture. She came to us in order to perform new removable dentures. During intra-oral examination we observed poor reabsorption in both alveolar ridges and a markedly strangled conformation on anterior region of upper ridge with great palatine-vestibular volume. Although that anatomic deformation and after analyze the aesthetic profile we chose to perform mucous-supported dentures without surgery keeping the upper teeth crimped without lip flap. Although anatomical conditions of the patient appeared to be unfavorable to achieving a mucous-supported prosthesis without pre-prosthetic surgery, we take advantage of the superior alveolar conformation performing a quite satisfactory rehabilitation, either aesthetic and functional. Keywords: Complete denture, facial aesthetics, bony undercut, preprosthetic surgery