Dental Emergency Advise: 

Denture rubbing against the gum

Use a denture fixative, sometimes it restricts the movement of the denture and helps. Otherwise contact the dentist. Your dentist is going to investigate the reason for loose denture. Sometimes it is just enough to reline them, sometimes you need a new denture and in some other cases even a new denture will not help and dentist have to increase the retention of denture by inserting implants and a new denture will clicks into the implants. This is called an "Over-denture ". If you want to know about over-dentures and implants please read our dental implants section Here or contact us.