Beware of foreign made dental work.  Several recent investigative reports have found lead in crowns made in China.  This is an obvious health hazard which most vendors of these products will not disclose. 

Besides the health issues, many of these imported crowns have other issues.  So are made so poorly, they don't fit.  In a test done for WJLA TV (an ABC affiliate), Good Morning America reported 10 crowns were ordered from 3 dental labs in China.  The results we awful.  None of the 10 crowns matched the perscription.  They would never fit properly! The crowns were then sent to a chemical testing lab where the crowns contained as much as 490 parts per million of lead.  Childrens toys, which only seem like they are in their mouths 24 hours a day, have a limit of 90 parts per million.

In a seperate test by another ABC affiliate, WBNS TV 10 in Colombus, Ohio, crowns were ordered from 4 dental labs in China and the lead content was 210 parts per million.

The Daily Mail of London, Engalnd reported that there were 4 cases of lead poisoning in the USA attributed to Chinese made dental fixtures.