In some cases, an implant-supported denture may be the best fit. These types of dentures are used in conjunction with dental implants for added security. Overdentures are a type of implant-supported denture that sits on top of the gums but is held in place by dental implants. This type of denture provides improved aesthetics. Patients typically feel more secure with fixed (permanent) dentures as they are stronger than removable false teeth, provide consistent tooth positioning and have a better bite and provide longer protection of the oral structure.