DenSureFit Upper Denture Reline Kit. Most people require 2 silicons applicators to get snug fit on the upper denture. The full kit is used to get a great initial fit. What is the extra silicone and Snug-Up Tip for? Even when someone gets a great initial fit with DenSureFit, some people will get loose a few days or weeks later. What Might Cause a Denture to Get Loose After a Reline? Loosening after a soft reline can occur as a result of: Shrinking of gums (typical with those in their first 18 months post-extraction) Reduction of inflammation (gums can become inflamed without you being aware of it from hitting/rubbing of the gums on hard acrylic, especially when eating; medications; other situations) What is a Snug-Up Application? It is not always necessary to remove and reapply your DenSureFit liner when your denture loosens. More silicone may be applied over the existing liner around the middle of the wall/trough area to fill the new void and snug the denture back up again. This is called a Snug-Up application. The Snug-Up procedure is located in the instruction booklet. Note: The silicone liner must be in good condition and bacteria-free to add more to it. If it is not in good condition, it needs to be removed and start from scratch again. Good condition means that it is being properly soaked/cleaned in a denture cleanser daily; is not lifting; does not have tears). How to Use the Extra Silicone Applicator and Snug-Up Tip If your denture is very loose, you can use the entire applicator of silicone all at once for a Snug-Up. Save the Snug-Up Tip for future use. HALF NOW?. HALF LATER! Or, instead of waiting until you get very loose, you can apply of the applicator of silicone when you are a little loose (one line of silicone around the wall or trough of the denture) following the Snug-Up instructions in the booklet.