Natural teeth wear down and stain over the years, and so do dentures. Your mouth and jaw also change over time, so your dentures may require adjusting or refitting 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.