Snap-in dentures lifespan is hard to predict, but you can expect your denture to last up to 15 years when properly cared for. It might need to be replaced after that time, but the good news is that the procedure will be much simpler on this occasion. You will only need to come to the office for new impressions, and in a few days, you will have your new denture fitted. Don’t worry about the implants – they can last forever!