Controlling fear and anxiety originated from dental treatment has been one of the major dentist¡¯s concerns. It is very interesting that the first person who used nitrous oxide was a dentist, Horace Wells, in medical history. Sedation, particularly conscious sedation, becomes more and more popular in Korea these days. Pedodontists who care for children and oral surgeons who carry out invasive and stressful minor oral surgery, including implant placement, seem to get more interests in conscious sedation. Here, sedation in dentistry was classified and summarized briefly, based on the administration route of sedatives. The outline of dose and complication of each sedative were also described, especially focused on intravenous sedatives.
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