This is such an important subject that I would have to say to be very careful with porcelain and ceramics. The aluminum they contain is harmful and that's very unfortunate.

For years, there has been the belief that aluminum causes?or is a major contributing factor for?Alzheimer's disease. We were then told that the experiment was flawed because the instruments being used were aluminum and that they contaminated the material (tissues) being tested. There is, however, other research that says mercury is bad, aluminum is bad, together they are bad-times-100. Needless to say, sifting through research studies is no picnic.

The bottom line is this.

It's one thing to have a single big does of a toxic substance, but it's another altogether to be continually exposed to it every day. The latter is much worse. For this reason, this subject of choosing the right filling material is important business.

For me, it all boils down to this; If you know it's toxic, avoid it, especially if its toxicity (aluminum?) is multiplied by something you already have in your body (mercury).

Unfortunately, I'm not familiar with High Noble. My Dentist uses Diamond Lite in about 80% of his patients.

Take your time and be careful making this important decision.