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The difference in acrylic (plastic) vs. metal (Cobalt Chrome) dentures in Sutton

Metal Dentures Vs Plastic Dentures Sutton

Many people ask our dentist in Sutton about metal dentures vs plastic dentures, so we thought we would write an article to explain the main differences! If you have no teeth left then plastic dentures are generally the best, however if you have some remaining teeth, it’s definitely worth considering a metal denture, as they have so many advantages.


If you have remaining teeth present, we can use these teeth to help keep the denture in place, improve stability, and improve support. We can place clasps, which are the metal wires that clip around your teeth, and they help to keep the denture in as well as help stop it from rotating. You can actually use clasps on plastic dentures, but they don’t work near as well as the proper cobalt chrome ones that are placed in metal dentures. This is due to many reasons, the main one being the type of metal. In metal dentures, the clasps are made from cobalt chrome, and are cast as part of the actual metal framework. The properties of cobalt chrome are the perfect balance between deformation, stiffness, and elasticity, meaning that it will perform well for many years. With the plastic dentures, we can only really ‘glue in’ stainless steel clasps, which are not very stiff and tend to deform very quickly.


Metal dentures also have rest seats placed in them for better support.

Dentures can either be tooth supported (best), gum supported (worst), or a tooth and gum supported (second best).

Support is the element that stops the denture from sinking into the mouth and moving around when you bite down. All metal dentures will have some element of tooth support and the more support you have, the better. Plastic dentures have the worst kind of support (gum supported) and when you bite down, all the pressure will go onto your denture and then onto your gums. Your gums are not very good at withstanding this pressure, as they are much softer than your teeth and plastic dentures are often referred to as ‘gum strippers’ by dentists for this reason. Plastic dentures can cause a great deal of damage to the gums surrounding your teeth and that’s why teeth with well made and well engineered metal dentures last a lot longer.


As metal is much stronger than plastic, we can make it a lot thinner and smaller, meaning that your dentures wont feel as bulky as the plastic ones. As they are less bulky, they will also build up less plaque, meaning your teeth last longer.

Better Fit

Metal dentures have a great fit compared to acrylic dentures due to the way the metal is cast, meaning that they are more comfortable.

Leave your palate uncovered

As we can place clasps for better retention, meaning that the dentures stay in really well – we don’t need to cover your palate. This has the following advantages:

  • Taste of food is better compared to an acrylic (plastic) denture, which covers the roof of the mouth
  • More comfort during eating, as you can feel the texture of food on your palate
  • More comfort whilst wearing the denture
  • Zero gagging as the denture doesn’t go far back in your mouth

As you can see, there are so many advantages of the metal dentures when compared to the plastic ones and it’s surprising how many dentists still make plastic dentures when there are better alternatives. If your considering getting a denture, or would like to upgrade your current denture to a one that performs a lot better, then give us a call and we would be happy to help. Our dedicated clinic is based in Carshalton, Sutton.

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