Approximately 40% of your jawbone structure will be gone after wearing your dentures for just six months. You will begin to notice that your dentures aren't fitting the way they used to after a few years of wearing them as well. This is because over the years, the structure of your jawbone becomes unable to support your denture. The same thing happens even if you are wearing a partial denture.
Once the structure of your jawbone is gone, your options for tooth replacement become very limited. Dental implants can stop bone loss and provide your mouth with natural looking teeth before the jawbone structure is completely lost.