When it hits $500 an ounce I will pull out my silver filling and sell them. I have one tooth in my drawer that has a gold filling in it for sale too.
Gold is $1865/oz per Kittco just now
Over the long haul, the price of gold to silver is 15:1
$1865/15=$124 per oz of silver.
Historically silver has been underpriced for a long time and pricewise has about an uptick of $100 to normalize with history