After placing amalgam into the cavity preparation, the operator will most likely use which instrument to compact the amalgam into the preparation?

When the brain is foggy and memory is affected the Qi is said to be _______________

a. stagnant b. rebellious c. sinking d. None of the above

What is the concentration of a given toxic material that generally may be tolerated without ill effects?

A. Toxicity B. Threshold limit value (TLV) C. Long-term exposure limit (LTEL) D. Acute exposure limit (AEL)