Lead Free Laboratory
Posted on 09/28/2011
One of the more common questions we receive from doctors regarding alloys is the questions about lead content in crowns. We are a "lead free" laboratory which means that none of our alloys used contain lead.
The real concern about lead in crowns was evaluated at length by the ADA (see link below). In their discussion of the topic, they found traces of lead in various feldspathic porcelains. According to the article, the trace elements of lead in feldspathic porcelain result from the fact that porcelain is a natural mineral mined from the earth and refined for dental use. As a result, porcelain will contain many naturally occurring elements including trace elements of lead. However, based on comprehensive testing analysis by the ADA, they concluded that "...we are confident that no measurable levels of lead are released from dental crowns made from dental porcelain typical of available source." This is due to the fact that the mouth never reaches a temperature that could possible release lead or other elements that make up porcelain.
The real concern about lead in crowns was evaluated at length by the ADA (see link below). In their discussion of the topic, they found traces of lead in various feldspathic porcelains. According to the article, the trace elements of lead in feldspathic porcelain result from the fact that porcelain is a natural mineral mined from the earth and refined for dental use. As a result, porcelain will contain many naturally occurring elements including trace elements of lead. However, based on comprehensive testing analysis by the ADA, they concluded that "...we are confident that no measurable levels of lead are released from dental crowns made from dental porcelain typical of available source." This is due to the fact that the mouth never reaches a temperature that could possible release lead or other elements that make up porcelain.
Lead in Dental Crowns, PFM, Crown and Bridge, Dental Lab Tech
- ADA Article on Lead : http://www.ada.org/3268.aspx