Natural teeth wear down and stain over the years, and dentures will, too. Your mouth and jaw also change over time so your dentures may require adjusting or rebasing periodically. It is wise to see your denturist at least once a year to ensure your dentures continue to fit well, and to have any necessary adjustments made. In most cases and with optimum care, your dentures should last between 5 and 10 years. Being proactive with denture care is always more effective than waiting until you have a major problem and trying to back track.