Tooth decay treatment was never associated with something pleasant and painless. Millions of people suffer from odontophobia, and it is quite understandable – toothache is a real suffering and all those devices in the dentist’s cabinet look scary and remind the modern modifications of torture devices from the times of Great Inquisition. Especially they scare little patients. However, today’s dentistry technologies have gone ahead quite far and there exists a possibility to cure teeth without any painful feelings. The development of anesthesiology allows applying local anesthesia, general anesthesia and sedation. If everything is clear about local and general anesthesia, the word “sedation” seems not to be understood by many patients. So, let us drag away the mystery curtain and determine this notion.