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Nitrous Oxide

Nitrous Oxide (Laughing Gas Conscious Sedation) - Houston, TX

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People of all ages have fears and anxieties about going to the dentist for routine cleanings or oral surgery. Instead of choosing pain and poor oral health, Houston area patients can visit board-certified periodontist Dr. Robert Porras at Texas Periodontal Associates to get their treatments while under the calming effects of nitrous oxide sedation. Frequently called laughing gas, nitrous oxide sedation is an odorless gas that is inhaled through the nose to relax the patient during their treatment. Nitrous oxide is a mild form of sedation, so the patient will usually stay awake during the procedure to help them follow any instructions from Dr. Porras or his staff. Nitrous oxide is good for procedures that involve the gums since it acts as a painkiller for soft tissue.

Reasons for Nitrous Oxide

  • For greater comfort during procedures
  • To minimize fears and anxieties
  • Sedation without injections
  • Patient remains awake
  • Able to drive after their procedure
  • To minimize or eliminate gag reflex


The doctor will fit the nasal hood or cannula over the patients face and then turn on the flow of nitrous oxide gas. Laughing gas begins to work quickly by relaxing the patient and minimizing discomfort within 2 – 3 minutes. The doctor or his staff will monitor the patient and increase or decrease the flow of gas based on the patient’s needs. While the gas is inhaled, the patient may feel euphoric and begin to feel a tingling sensation in their arms and legs. Patients should remain awake and able to hear and follow the doctor’s instructions during the procedure.


The nitrous oxide gas will be stopped after the procedure and the sedative effects leave the body fairly quickly. In 3 – 5 minutes, the patient should fell normal again and be able to drive themselves home. Patients can avoid developing nausea from the nitrous oxide by eating a moderate meal 4 hours before their appointment. Nitrous oxide is not known to cause allergies or serious side effects when used properly, but patients should contact their doctor if they are concerned after their procedure.

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Eliminate Fear and Discomfort

For patients who have fear or anxiety about dental procedures, nitrous oxide sedation is a gentle, safe method to get through a dental visit. Laughing gas sedation can give patients the relaxation they need to get their teeth and gums repaired so they no longer have to live in pain.

Related Procedures

* All information subject to change. Images may contain models. Individual results are not guaranteed and may vary. All procedures are performed under intravenous conscious sedation.