Archive for 28. Februar 2008

Bleirückstände in chinesischem Zahnersatz?

Februar 28, 2008

in Deutschland war bislang noch nichts entdeckt worden, doch aus den USA schwappen die ersten

Documented Cases of Lead Contamination in Off Shore Dental Laboratory Restorations

Recently, NADL was contacted by a dental patient in Ohio who has documentation of lead contamination in her dental restoration. The affected patient, a senior citizen, received a three-unit dental bridge from a dentist in Ohio. After having an adverse reaction to her dental work, and having it removed, the dentist disclosed that the prescription was sent to an offshore dental laboratory and disclosed to the patient that the restoration was made in China. The patient then had the restoration sent to a chemical laboratory for analysis. The documentation of the dental material analysis of this patient’s restoration showed unsafe levels of lead in the porcelain on the restoration.  This case has attracted the attention of an Ohio television reporter who was already working on a story about offshore dental laboratory work. As part of the reporter’s investigative research for the story, the TV station ordered a series of crowns from several offshore dental laboratories. One of those restorations contained 210 parts per million of lead in the materials. The U.S. Congress, in response to the toy recalls in 2007, lowered the acceptable levels of lead in toys to 90 parts per million.