The calming inhalant known as laughing gas is for patients who are mildly or moderately anxious or nervous. It eases their anxieties so that they can relax and undergo treatment comfortably and safely. The gas is administered by placing a small hood over the patient's nose. As the gas takes effect, the patient becomes relaxed, but is still awake and can communicate. When the gas is turned off, the effects of sedation wear off almost immediately.

Patients who are more anxious may need an oral medication that is stronger than nitrous oxide. With oral sedation, the patient may be sleepy but can be aroused and will respond to simple commands. Minor side effects such as nausea or vomiting can occur with some medications. Before a visit in which a patient is to receive oral sedation, he/she will receive instructions about eating and drinking, what to expect and what to watch for after treatment. You will need assistance to get home after sedation.