Martin, You have not provided an independent source that says silver is a better protector than lead from x-rays. Although I am not a scientist and do not know whether you are correct, you are simply quoting yourself, or your own interpretation of certain facts (absorption rate), when you mention references. I would like to see some other conclusive reference that says (for a given thickness of metal) that silver protects better than lead from x-rays.. A 20 lb. silver protector used by a doctor or dental office would cost about $1350. That is not an exorbitant cost if it did indeed provide better protection than lead.(posted 8471 days ago)