Conscious sedation or nitrous- oxygen oxide inhalation sedation, consists of administering a controlled mixture of oxygen and nitrous oxide through a nasal mask, by means of special the apparatus MASTER FLUX AS3000- Tecno Gaz. Is a type of sedation indicated to both children and adults with phobias, diminishing the anxiety and fear of the dentist, the patient becomes calm and relaxed, even euphoric. The drowsiness and loss of attention can be present throughout the procedure but the patient is conscious and able to communicate with the doctor.
Equally, inhalation sedation is aimed at people with high sensation of vomiting, those with special needs, epilepsy, or other health problems that hinder the collaboration with the dentist.

The nitrous oxide is safe and non-toxic for health and has no side effects on the heart, brain, lungs, kidney, or live, being indicated in cases of high blood pressure, heart attack, angina pectoris, diabetes, liver failure.
It is well known that inhalation sedation doesn't totally replace local anesthesia, but due to its weak analgesic effect pain disappears discreetly especially at gum levels, so the needle prick sensation is diminished.

Among the contraindications of this technique are the following: numerous, repeated interventions, or those exceeding 6 hours, pregnancy (first and last quarter), immuno-depressed patients, drug addicts, claustrophobic patients, with severe respiratory tract infections, chronic lung disease or any condition of obstructive nature on the respiratory track, patients who can't stand the nasal mask, oral breathers, and not the least, the lack of discernment.

Very rare side effects were experienced by patients during the inhalation sedation method: hallucinations, dizziness, hypotension, or vertigo. In general, this is due to over sedation with a too high concentration of nitrous oxide. It is important to differentiate these symptoms from the "floating sensation" that occurs naturally for patients who have never benefited from inhalation sedation.

Within 15 minutes after stopping the administration, the nitrous oxide is completely eliminated from the body, and the effects disappear. The ability to drive is not affected on long term.