See with your own eyes how mercury vapor escapes from dental amalgam. Itäó»s odorless, colorless, and tasteless, but it casts a shadow in black light! Over thirty minutes of new material has been added to this updated version, including expert interviews, and a demonstration of safe amalgam removal. Great for showing patients and a great tool for teaching. Anyone who has seen this before NEEDS to see it again. Also, for those who doubt that the smoke from the smoking tooth is mercury vapor, take a look at the 1 minute äóìIt Really Is Mercury!äó