At CrownBuyers we evaluate the precious metal content in your gold tooth using X Ray Flourescence Spectrometry (XRF). As outlined in the above video from Thermoscientific, the process is as follows:
Separate. Remove metal from remaining tooth matter.
Weigh. Place separated metal on scientific scale. Examples of a typical gold scale:
X Ray. Place the gold tooth/bridge on a neutral surface beneath the handheld XRF, which returns blend of various metals by percentages. Other examples of XRF spectrometry used in measuring the precious metal content of dental crowns, caps and bridges:
Evaluate. Multiply percent gold content by metal’s weight, then the grams by the current, unrefined gold value. Most crowns average 15 karat in purity and gold price varies daily.
If you’ve got an appetite for more on the how and why of X Ray Flourescence, feast your scientific mind on this: http://en.wikipedia.org/wiki/X-ray_fluorescence