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Sleep dentistry & sedation

Fear of Dentist?

If you feel anxious or fearful about dental appointments, sedation dentistry can provide significant benefits for you. By inducing a state of relaxation, sedation provides an effective solution for patients with dental anxiety, allowing you to sleep peacefully during your treatment and overcome your fear of dentists.

Don't delay your dental appointment any further. Ensure a secure and comfortable dental experience by scheduling a consultation with your dentist at Nicholson Road Dental Centre.

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The Penthrox inhaler, commonly known as the "Green Whistle"

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What is Penthrox?

Penthrox (Methoxyflurane) is a medication used to alleviate pain and induce sedation. It is a transparent and odoriferous liquid that transforms into vapour or gas when poured into the Penthrox inhaler. The patient handles the hand-held Penthrox inhaler and self-administers the medication, adjusting the level of sedation based on their intake rate. Widely known as the "green whistle," the Penthrox inhaler is utilized by paramedics to provide pain relief in emergency situations.


Penthrox is delivered via a specialized inhaler designed for this purpose and typically takes full effect after 6-10 inhalations. Following the initial 6-10 breaths, you may continue inhaling continuously or as directed by our dentist.

What is the administration method of Penthrox?

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Penthrox is a non-opioid alternative for pain management and can also be used in place of nitrous oxide (also known as laughing gas) and is generally safe for use. However, it should be avoided if a patient:

  • Is allergic to methoxyflurane.

  • Has a history or has a family member with a history of malignant hyperthermia.

  • Has reacted badly to inhaled anaesthetics in the past.

  • Has liver, kidney, heart or circulation problems.

  • Is unconscious or having difficulty breathing.

Possible side effects of sedation may include reduced concentration, nausea, and feelings of tiredness or drowsiness. Although these effects dissipate relatively quickly, it is advisable to have a companion accompany you to your dental appointment if sedation is planned.

 Is Penthrox dangerous?

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