The teeth and the jaw bone have a very close association- when teeth are lost due to gum disease or cavities, the jaw bone that was holding the teeth begins to dissolve or resorb.
Loss of bone in terms if height width and volume can cause problems in retention of dentures in the upper and lower jaw. In such situations, implants can be used to provide the needed stability and retention to the dentures
An Implant supported overdenture is a removable denture which derives its support from multiple implants secured in the jaw bone.