Let your patients see and feel the stability and retention possible with an implant supported overdenture retained by ERA Attachments. The mandibular model and denture use two of each size ERA® Implants, 2.2 and 3.25. This model is also useful in demonstrating overdenture retention with ERA® Cast Overdenture Attachments, ERA® Implant Abutments, and ERA® Direct Overdenture Attachments.