Derbys removable implant solutions provide you with reliable restorations that utilize the latest technology for a reasonable and consistent price. Implant overdentures are indicated for patients who desire a more stable prosthesis that improves retention, function and speech. The Implant Overdenture is indicated when there are at least two implants in place, and is most common in the mandible. The CAD/CAM Milled Bar Overdenture distributes occlusal loads more evenly across four or more implants, making it ideal for patients with a heavy bite or when the implants have been placed in softer bone.