Management of Unstable Dentures on Atrophied Mandibular Ridges Using Different Impression Materials for Recording the Neutral Zone: A Case Series

Patients presenting with highly resorbed residual ridges present a challenge during prosthodontic rehabilitation due to the lack of any anatomic features to provide retention or stability of the complete denture prosthesis. Prosthetic rehabilitation of atrophied residual ridges using removable complete denture prostheses with the implementation of the neutral zone technique of three patients has been described. The neutral zone was recorded using green stick compound, admix of medium-fusing and low-fusing impression compound, and soft liner respectively. The definitive prosthesis was fabricated using compression molding technique and the final prosthesis was delivered to the respective patients with instructions on usage and hygiene of the prosthesis. The prosthetic rehabilitation of severely resorbed mandibular residual ridges is challenging for a prosthodontist. Prostheses fabricated using the neutral zone technique provide better stability, speech, patient comfort, and satisfaction. The case series presents the clinical significance of neutral zone for artificial teeth arrangement and contouring of polished surfaces of complete dentures.