Dental anxiety is very common, and many patients feel nervous about treatment. Sedation dentistry allows you to receive the care you need in a calm and relaxed state. We provide three recognised forms of sedation: inhalation sedation, oral sedation, and intravenous (IV) sedation.
Each method works in a different way and is suitable for different levels of anxiety and types of procedure. This guide explains what each option involves, how long its effects last, and what to expect afterwards.
Inhalation Sedation
What it is:
Inhalation sedation, sometimes called “nitrous oxide” or “laughing gas,” involves breathing a carefully controlled mixture of nitrous oxide and oxygen through a small mask that fits comfortably over your nose.
What to expect:
- You will begin to feel relaxed within a few minutes.
- You remain awake and able to talk to your dentist throughout.
- Once the gas is stopped, the effects wear off quickly—usually within five to ten minutes.
After treatment:
Because recovery is so fast, most patients are able to leave the surgery unaccompanied and continue their normal activities, including driving and working, shortly afterwards.
Possible side effects:
Some patients experience mild light-headedness or tingling in the hands and feet, but these effects disappear almost immediately once breathing normal air again.
Oral Sedation
What it is:
Oral sedation is achieved by taking a prescribed sedative tablet before your appointment. The medicine helps reduce anxiety and creates a sense of calm while keeping you awake and able to respond.
What to expect:
- The sedative is usually taken about an hour before treatment.
- You will feel relaxed and slightly drowsy but will still be conscious.
- Local anaesthetic may still be used to prevent discomfort during the procedure.
After treatment:
Because the sedative can stay in your system for several hours, you will need someone to accompany you to and from your appointment. You should not drive, operate machinery, or return to work for the rest of the day.
Possible side effects:
Drowsiness, slower reaction times and temporary forgetfulness are common. These effects normally wear off within 12 to 24 hours.
Intravenous (IV) Sedation
What it is:
IV sedation delivers the sedative directly into your bloodstream through a small needle, usually in your arm or hand. It allows for a deeper level of relaxation than inhalation or oral sedation.
What to expect:
- The sedative works quickly, and the dentist can adjust the dose during treatment.
- You remain conscious but are deeply relaxed and may not remember much about the procedure.
- Monitoring equipment is used throughout to ensure your safety.
After treatment:
The effects of IV sedation can take several hours to wear off. You will need someone to escort you home and stay with you for the remainder of the day. You must not drive, drink alcohol, or make important decisions until the next day.
Possible side effects:
Some patients experience temporary drowsiness, mild dizziness, or a brief period of amnesia. Serious side effects are very rare when sedation is administered by trained professionals.
Choosing the Right Sedation Method
Before recommending any sedation, your dentist will review your medical history, medications, and level of anxiety. The most suitable method depends on your individual needs, the type of treatment planned, and how deeply you wish to be sedated.
All sedation procedures are carried out by trained clinicians following strict safety protocols. Throughout your appointment, your breathing, pulse and oxygen levels are monitored continuously.
Summary
Sedation Type | Onset | Recovery Time | Can I Drive After? | Common Effects |
|---|---|---|---|---|
Inhalation (Nitrous Oxide) | 2–3 minutes | 5–10 minutes | Yes | Light-headedness, warmth |
Oral (Tablet) | 30–60 minutes | Up to 12 hours | No | Drowsiness, forgetfulness |
IV (Intravenous) | 1–2 minutes | Several hours | No | Drowsiness, short-term amnesia |
Final Notes
Sedation dentistry can make dental care accessible and comfortable for patients who might otherwise avoid treatment. Each method is designed to minimise anxiety while ensuring your safety and wellbeing. If you are considering sedation for an upcoming appointment, discuss your options with your dentist — they will help you choose the approach best suited to your comfort and medical background.
Our Team
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