| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 3167603 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology | 2010 | 5 Pages |
ObjectiveThe levels of 10 heavy metals (arsenic, bismuth, cadmium, chromium, copper, iron, lead, manganese, nickel, and zinc) in gray Portland cement (GPC), white Portland cement (WPC), gray MTA (GMTA), and white MTA (WMTA) were analyzed by inductively coupled plasma-atomic emission spectrometry (ICP-AES).Study designOne gram of each material was digested with 80°C “aqua-regia” (7 mL of 60% HNO3 and 21 mL of 35% HCl), filtered, and analyzed by ICP-AES. The analysis was performed 6 times and the data were analyzed statistically.ResultsArsenic and lead concentrations were the highest in GPC (P < .05). GPC had much more of 7 heavy metals than the other 3 cements (P < .05). GMTA and WMTA had higher purity than GPC and WPC (P < .05), particularly when arsenic content was considered.ConclusionIf a clinician is considering using Portland cement versus MTA, the differences in purity may be considered.
