Did you every wonder why that after wearing Dentures 2-3 years your Dentures become Loose and Irritating. That's because of your Hard Plastic Dentures.
After 2-3 years of wearing Hard Plastic Dentures your Gums will start to wear down enough to causeyour Dentures to become Loose because of loss of suction. Your Dentures are much harder than your Gums so what do you think will wear first, your Gums of course.
Whem your Gums wear down just a little it will leave a gap between your Gums and Dentures causing and air pocket to where your Dentures won't seal anymore and will become Loose and Irritating.
This is the main reason soft liners were perfected to HELP STOP GUM SHRINKAGE! Some soft liners have a resilient texture (bounce back elasticity) stays Soft but Firm to help Save your Gums from Wear Tear of your Hard Plastic Dentures.
As long as you Reline your Dentures with a soft liner your Gums won't Shrink to any large degree. If your Gums don't Shrink you will always be able to wear Dentures with Satisfaction.
Department of Removable Prosthodontics, School of Dentistry,
University of Tokushima, Japan.