Nitrous oxide Sedation
Also known as "laughing gas", this colorless gas is inhaled through a mask or nosepiece. It can cause feelings of euphoria, calmness, and sleepiness, and can also help relax muscles.

 

Patients can quickly return to normal after stopping the inhalation, but may feel groggy for most of the day. Nitrous oxide is often used for simple dental exams and cleanings, or for children who are anxious about the dentist or have a strong gag reflex.

However, patients are not fully unconscious during IV sedation, and will still be conscious enough to respond to questions and requests.