Zinc helps the makes the adhesive stick better. What are the adverse effects? High levels of zinc can deplete other minerals like iron and copper. Depletion of copper can lead to neurological disorders. The suspicion of ingestion of high levels of zinc is the cause of several lawsuits against manufacturers of zinc
containing denture adhesives.
See ABC Nnews video on the investigation.
After researching the products, I went shopping to see what was on the shelves of three local stores. Intersteingly only three manufacturer's brands and the generic store brand were on the shelves. These were Polygrip (zinc free by Smith Kline Galaxo), Fixodent (zinc by Proctor & Gamble) and Sea Bond (zinc free by Sea Bond).
Both Fixodent and Polygrip dominated the shelf space with several variations of their products taking up 90% of the shelf space. The store brand was zinc free, and the label went to great lengths to point out that it was not manufactured by P & G.I have listed below several denture adhesives and categorized them by whether they contain zinc or not.
Zinc free adhesives
dushion Grip paste is manufactured by Schering-Plough, and is zinc free. It is not your typical paste adhesive and has special instructions to apply and remove
|Poly Grip Powder|
|Protefix powder, paste, liners|
|Secure denture paste liner|
|Staydent denture paste|
|Klutch adhesive powder|