Cicadas spend years underground and come out once in a blue moon for a frenzy of activity. But certain broods, like the one that emerged in 2004, come out like clockwork every 13 or 17 years. In this Science Update, you'll hear what's so special about these numbers. Why cicadas come out in their prime.
Product Information. Gluma Desensitizer - Heraeus Kulzer is a simple, one-step chairside procedure for treating and preventing dentin hypersensitivity. Gluma is the most well-known and trusted desensitizer in the dental industry world wide. Used in over 50 million restorations, GlumaÂ® Desensitizer is preferred over all others for preventing and eliminating hypersensitivity. Just one drop of Gluma is all you need and the results are fast and effective.
Dental amalgam is a dental filling material used to fill cavities caused by tooth decay. It has been used for more than 150 years in hundreds of millions of patients around the world. Dental amalgam is a mixture of metals, consisting of liquid (elemental) mercury and a powdered alloy composed of silver, tin, and copper. Approximately 50% of dental amalgam is elemental mercury by weight.