It is recommended that dentures be replaced every 5-8 years. If you have delayed replacing your dentures for over 5 years, be ready for a long adjustment period, usually 60+ days. The changes to your jaws and muscles during that time are significant. The bone loss could be 5-15mm; add 5-10 mm of wear on your denture teeth, and the changes are huge. To succeed, you need to wear them for 8-12 hours daily so your muscles and ligaments can adapt. Contact Accura Denture Clinic for all your denture needs.