Anaesthesia for dental and children's procedures
The anaesthetic and sedation choices used to safely and comfortably carry out dental treatment or procedures in children and, sometimes, anxious adults.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- Options range from local anaesthetic, through sedation, to a general anaesthetic — matched to the procedure, the child's age and how anxious they are.
- For children, a general anaesthetic should be given by a specialist children's anaesthetist in a hospital with proper monitoring and recovery; it is not a decision taken lightly.
- Fasting before sedation or a general anaesthetic matters, and parents should not fast a child longer than instructed; tell the team if the child becomes unwell beforehand.
- Common after-effects (sickness, sore throat, drowsiness, grumpiness) are usually mild and short-lived; serious problems are rare but should always be discussed.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Allows treatment to be done comfortably that would be too difficult while fully awake
Sedation in an ordinary dental chair may not be safe for very young children or those with significant breathing, heart or airway problems — a hospital...
The child is cared for in recovery and reunited with a parent as soon as it is safe. They may be drowsy, tearful or unsteady — this usually settles...
A general anaesthetic for a child given by a specialist children's anaesthetist with a recovery team.
The child is cared for in recovery and reunited with a parent as soon as it is safe. They may be drowsy, tearful...
Once awake, comfortable and able to drink, the child can usually go home. Some children are a little sick or...
Expect tiredness and a quiet evening. Offer sips of fluid then light food. Give pain relief as advised for any...
Children should be supervised and kept from rough play. Adults must not drive, drink alcohol or make important...
What are the anaesthetic and sedation options for dental and children's procedures?
Some dental treatment and minor procedures are hard to do while a person is fully awake — particularly for young children, very anxious patients, or where several teeth need treating at once. Anaesthetic and sedation choices make this possible safely and comfortably.
The options range from local anaesthetic alone (numbing the area), through sedation (inhaled 'gas', or medicine by mouth or vein to help relaxation), to a general anaesthetic (fully asleep). For children, a general anaesthetic is always given by a specialist children's anaesthetist in a hospital with the right equipment and a recovery team.
An older child or young person who has enough understanding and the capacity to decide may be able to give consent for themselves. Otherwise, consent is given by a person with parental responsibility (or someone else with lawful authority). Whichever applies, the child or young person should still be involved and their views and agreement sought as far as their age allows. The exact legal position is a little different in Scotland from England, Wales and Northern Ireland, so the team will explain what applies to you. Good services give clear preparation for both child and parent, including what to do if the child becomes unwell beforehand.
The aim is to match the lightest, safest option to the procedure and the person. A general anaesthetic is not chosen lightly for a child, but where it is needed it allows treatment to be completed in one go with the child fully asleep and unaware.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Sedation vs general anaesthetic for a child
| Sedation | General anaesthetic | |
|---|---|---|
| Awareness | Awake but relaxed | Fully asleep |
| Setting | Dental clinic or hospital | Hospital with children's team |
| Recovery | Usually quicker | Longer; monitored recovery |
| Used when | Mild anxiety, simple work | Young child or lots to treat |
The right choice depends on the child's age, the amount of treatment and how anxious they are. A general anaesthetic is used when lighter options will not work safely.
Preparing for your treatment
- Follow the fasting instructions exactly, and do not fast your child any longer than told — it is hard for little ones to go without food and drink for too long.
- Tell the team if your child becomes unwell (cough, cold, temperature) before the appointment, as the procedure may need to be postponed.
- Share all medicines, allergies, and any breathing, heart or other health problems, including snoring or sleep apnoea.
- If you, or an older teenager having the procedure, take a weight-loss or type 2 diabetes medicine such as semaglutide (brand names Wegovy, Ozempic or Rybelsus) or a similar 'GLP-1' or 'GIP' medicine — including any bought privately or online — tell the anaesthetist well before the day, as these can leave food in the stomach despite fasting; do not stop them without advice.
- Bring a parent or person with parental responsibility to consent and stay with the child; an older child or young person with enough understanding may also be able to consent for themselves.
- Prepare your child gently and honestly in age-appropriate words; bring a comforter, favourite toy or book.
- Arrange a day or two off nursery, school or work, and transport home (no driving for the patient after sedation or a general anaesthetic).
- Ask whether a children's anaesthetist will be present and how the recovery is staffed.
What happens
Before the procedure the team checks the treatment plan, confirms fasting, and consent is agreed — given by the young person themselves if they have the understanding and capacity to decide, or otherwise by a person with parental responsibility, with the child still involved as much as their age allows. For a general anaesthetic, a specialist children's anaesthetist meets you and explains how the child will go off to sleep — often by breathing anaesthetic gas through a mask, or through a cannula, sometimes with numbing cream applied first. A parent can usually be with the child until they are asleep.
During the procedure the child is monitored closely. With sedation they are relaxed but breathing on their own; under general anaesthetic they are fully asleep and unaware, with breathing and vital signs watched throughout. The dental or surgical treatment is then carried out.
Afterwards the child is cared for in a recovery area and a parent is reunited with them as soon as it is safe. The team checks the child is awake, comfortable and able to drink before going home. Most children recover quickly, though they may be drowsy, tearful or unsteady at first.
Is this treatment right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- Sedation in an ordinary dental chair may not be safe for very young children or those with significant breathing, heart or airway problems — a hospital general anaesthetic with a children's anaesthetist is safer.
- A general anaesthetic may be inappropriate if the same treatment can be done comfortably with local anaesthetic or simple measures.
- A child who is acutely unwell (chest infection, fever) is usually safer postponed.
- Treatment under anaesthetic does not address ongoing causes of decay, so it is not a substitute for prevention.
Delay or rearrange if…
- The child has a cough, cold, temperature or other acute illness.
- Fasting instructions have not been followed.
- There are unaddressed breathing problems such as significant snoring or sleep apnoea.
- Valid consent cannot be obtained — whether from a young person with the capacity to decide or from a person with parental responsibility.
- There are safeguarding concerns that need addressing before proceeding.
Alternatives to discuss
- Local anaesthetic alone for older children and adults having straightforward treatment.
- Inhaled gas (nitrous oxide) for mild anxiety and simpler procedures.
- Behavioural support, distraction and a gradual approach for anxious children.
- Prevention and conservative dental care to reduce the need for treatment under anaesthetic.
- Referral to a specialist paediatric dental service.
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Comfort, sedation or contrast choices
If local anaesthetic, sedation, contrast or pain relief is used, ask what is planned, why, and what it means afterwards.
Benefits
- Allows treatment to be done comfortably that would be too difficult while fully awake
- Lets several teeth or problems be treated in one visit under general anaesthetic
- Reduces fear and distress for very anxious children and adults
- Local anaesthetic and sedation keep lighter options available where suitable
- Treatment is carried out by trained teams with proper monitoring
- Avoids repeated distressing attempts at treatment while awake
Risks & complications
- Feeling sick, sometimes with vomiting, afterwards
- A sore throat after a general anaesthetic
- Drowsiness, dizziness or feeling 'foggy' on waking
- Being tearful, grumpy or unsteady for a while
- Minor grazes to the lips or a headache
- Sedation not being enough, so a general anaesthetic is needed instead
- A temporary dip in breathing or oxygen, managed by the team
- Distress or agitation on waking
- Minor damage to teeth, especially if loose or already weak
- A serious allergic reaction to the anaesthetic medicines
- Breathing or airway problems needing active treatment
- Stomach contents passing into the lungs (aspiration), which is why fasting matters
- Very rare serious complications, including, extremely rarely, a life-threatening event
For children, the most important safeguard is that a general anaesthetic is given by a specialist children's anaesthetist in a hospital with the right monitoring and recovery team — not in an ordinary dental chair. Tell the team about any breathing problems, snoring, recent colds, allergies or family problems with anaesthetics. Ask which option is planned, who will give it, and what the recovery looks like.
Published figures to discuss
Common after-effects such as sickness, sore throat, headache and drowsiness affect a noticeable minority of children but are usually mild and short-lived. Serious complications of modern children's anaesthesia are rare. Exact rates depend strongly on the child's age, health and the procedure, so figures should be treated cautiously.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Common minor after-effects (sickness, sore throat, headache, dizziness) in children | Reported in roughly 1 in 10 to 2 in 10 children | Usually mild and short-lived and treatable; based on RCoA patient information. | RCoA — Your child's general anaesthetic (information for parents and guardians)rcoa.ac.ukPublished figure |
| Serious complications of a general anaesthetic in a healthy child | Rare | Risk is higher in very young, premature or less well children; your anaesthetist will discuss your child's specific risk. | Great Ormond Street Hospital — Side effects and risks of a general anaestheticgosh.nhs.ukSource-linked context |
| Emergence agitation or distress after anaesthesia | Common to uncommon in young children depending on age, anaesthetic and procedure | Usually short-lived, but parents should be warned that crying or confusion can happen despite good pain control. | Guide sourcesClinical context |
| Airway events during dental anaesthesia or sedation | Uncommon but important | Dental work shares the airway with the anaesthetist, which is why fasting, airway assessment and trained staff matter. | Guide sourcesClinical context |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
Most children and adults recover from sedation or a general anaesthetic over the rest of the day. Children may be drowsy, tearful or unsteady at first, which is normal. The anaesthetic medicines can affect judgement and reactions for up to 24 hours in adults.
- Drowsiness, tearfulness or grumpiness on waking
- Mild nausea, occasionally a single episode of vomiting
- A sore throat or sore mouth that settles over a few days
- Being clingy or unsettled for the rest of the day
- A quiet, tired evening with a good sleep
Aftercare
- Supervise a child closely for the rest of the day and keep them from rough or risky play.
- Offer sips of clear fluid first, then light food as tolerated.
- Give pain relief such as paracetamol or ibuprofen as advised for any soreness.
- Follow the specific dental aftercare (soft diet, avoiding the numb side until sensation returns).
- Adults must not drive, drink alcohol or operate machinery for 24 hours after sedation or a general anaesthetic.
- Watch for warning signs of breathing problems, bleeding or being very unwell (see below).
- Keep any follow-up or review appointment.
- Have the clinic or hospital contact number to hand.
- Fasting instructions understood and not over-applied
- Person with parental responsibility attending to consent and stay
- Comforter, toy or book packed for the child
- Transport home arranged (no driving after sedation/GA)
- Day or two off nursery, school or work booked
- Children's pain relief at home and dosing checked
- Clinic or hospital contact number saved
⚠ Get urgent help if…
- Difficulty breathing, noisy breathing, or blue lips after going home
- A child who is very drowsy and cannot be woken properly
- Repeated vomiting, or unable to keep any fluids down
- Heavy or ongoing bleeding from the mouth after dental work
- A high temperature, severe pain or a child who seems very unwell
- A rash, facial swelling or wheeze suggesting an allergic reaction
- Signs of dehydration in a child (very few wet nappies, drowsiness, dry mouth)
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your specialist gives you.
Results & realistic expectations
The anaesthetic or sedation is there to allow treatment to be carried out safely and comfortably — it is not a test with a result. A good outcome is that the planned treatment was completed, the child or adult was kept safe and comfortable, and they recovered well.
The dentist or surgeon will explain what was done and any follow-up needed. Completing treatment under anaesthetic does not stop future tooth decay, so ongoing dental care and prevention still matter.
Related tests, treatments or support
Local anaesthetic is often combined with sedation or a general anaesthetic so the area stays comfortable during and after treatment. Where a general anaesthetic is used for a child's dental work, the dentist usually completes all the needed treatment in one go to avoid repeat anaesthetics.
Follow-up & long-term care
You should be given written aftercare advice and a contact number before going home. The dental or surgical team will arrange any review and explain ongoing care. For children, prevention advice (brushing, diet, fluoride) is important to reduce the chance of needing another anaesthetic in future.
Repeat, follow-on and what comes next
- If sedation is not enough, a general anaesthetic on another day may be needed.
- Tooth decay can return, so further dental treatment may be needed if prevention is not improved.
- Occasionally treatment cannot be completed as planned and a further visit is required.
- A poorly tolerated anaesthetic should be recorded to plan future care.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- A general anaesthetic for a child given by a specialist children's anaesthetist with a recovery team.
- A parent reunited with the child in recovery as soon as it is safe.
- Clear written aftercare, warning signs, pain-relief advice and a contact number.
- Discharge only when the child is awake, comfortable and able to drink (and an adult escort for sedated/anaesthetised patients).
- Prevention advice and dental follow-up to reduce the chance of needing another anaesthetic.
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- The anaesthetic or sedation choice and whether a specialist anaesthetist is needed
- The hospital or day-case facility fee and recovery care
- The amount and type of dental or surgical treatment carried out
- Whether an overnight stay is needed for a younger or less well child
- Monitoring and nursing care during and after
- Follow-up appointments and any further treatment
- Medicines used during and after the procedure
- The anaesthetist's or sedationist's fee and qualifications for treating children
- The hospital or day-case facility fee and recovery care
- The dental or surgical treatment fee
- Follow-up appointments and what is included
- What happens, and any extra cost, if the procedure must be postponed (for example illness)
- What happens if a complication occurs
- The cancellation policy
On the NHS? Children's dental and hospital procedures are generally available on the NHS when clinically needed; some sedation or dental options are also offered privately, sometimes for faster access.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- Agreeing to dental sedation or anaesthesia without it being clear who gives and monitors it.
- Not explaining the difference between sedation and a general anaesthetic for a child.
- Fasting instructions that are unclear, or a child fasted far longer than necessary.
- No discussion of what happens if the child is unwell on the day.
- No written aftercare advice or contact number; prevention not discussed.
Marketing red flags
- Offering general anaesthesia or deep sedation for children outside a properly equipped hospital setting.
- Promising a child will feel 'nothing at all' with light sedation alone.
- Downplaying fasting rules or the need to postpone if the child is unwell.
- Presenting anaesthesia as completely without risks.
Choosing a specialist safely
- Check the specialist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- Which option are you recommending for my child, and why that one?
- Will a specialist children's anaesthetist give the anaesthetic, and where?
- What are the specific risks for my child given their age and health?
- What are the fasting instructions, and what should I do if they become unwell beforehand?
- How long will recovery take, and what should I expect afterwards?
- What can we do to avoid needing another anaesthetic in future?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the specialist who carries out my treatment, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this treatment not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
Is a general anaesthetic safe for my child?
Can my child's dental work be done with sedation instead of a general anaesthetic?
Why does my child need to fast, and for how long?
Can I stay with my child?
What if my child has a cold on the day?
Who gives consent for my child's anaesthetic?
Do weight-loss or diabetes injections like Wegovy or Ozempic matter before an anaesthetic?
Will this be on the NHS?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: RCoA — Your child's general anaesthetic (information for parents and guardians) RCoA — Guidelines for the Provision of Paediatric Anaesthesia Services (GPAS chapter 10) RCoA — Sedation explained (patient leaflet) Great Ormond Street Hospital — Side effects and risks of a general anaesthetic NHS — General anaesthesia MHRA — GLP-1/GIP medicines: aspiration risk during general anaesthesia or deep sedation Scottish Government — children's consent (Age of Legal Capacity (Scotland) Act 1991 / Children (Scotland) Act 1995 guidance) Welsh Government — children's consent when engaging with specialist services (guidance for professionals)
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
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