Aluminum oxide poisoning

By Gary M. Verigin, DDS, CTN

As more people become aware of the health risks of mercury amalgam fillings, you see more dental practices marketing themselves as “metal-free.” Sounds great, no?

It’s also inaccurate – and not just because these dentists often do place metal restorations such as gold crowns. As dental materials expert Jess Clifford has noted, “There is no such creation as a metal-free restorative” – not even tooth-colored restorations. All modern composites, glass ionomers (dental cements), porcelain and ceramics contain some metal. It’s not that “metal-free” dental offices are trying to mislead you. They just seem to be using it as shorthand for “mercury-free dentistry.”

But it’s still inaccurate.

I became curious about the composition of porcelain crowns and called one of the manufacturers. I was told their porcelain was pure ceramic. Thanks. I called another and asked what their ceramic was made out of. Porcelain I was told. I called another and asked what their porcelain ceramic was made out of. Natural products. Knowing that mercury was “natural” I went to scientists other than manufacturers. Natural porcelain ceramic is made from clay B kaolin specifically B which is 45 percent aluminum oxide. Oh! So porcelain crowns are really aluminum. The aluminum does come out of the crown and I have personally seen some tragic cases of poisoning from dental porcelain ceramic aluminum crowns. Obviously not everyone has violent reactions, but when they occur, it is not a happy site [sic].

Scary, no? Makes you want to avoid porcelain all together, doesn’t it? There’s just one problem: aluminum oxide is a benign form of the element. As Clifford explains, while aluminum in its “fully reduced (shiny metal) form…will react with a vast number of chemical constituents, ” some of which are highly toxic,

not all forms of aluminum are readily reactive, nor do they have appreciable toxicity concerns. In order to be a toxic problem, aluminum must be ionizable or dissociable or otherwise available to bind chemically with tissue constituents. If the aluminum does not have opportunity to chemically separate and bind, toxic constituents are simply not formed. [emphasis added]

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