Sedation dentistry uses medication to help patients relax during dental procedures. Options range from happy gas (nitrous oxide) for mild anxiety through to twilight sedation (IV sedation) for moderate-to-deep relaxation, and general anaesthesia in a hospital setting for patients who want to be fully asleep during treatment.
Here at Pitt Street Dental Centre in Sydney CBD, we offer all three levels of sleep dentistry, making complete dental care accessible to patients who experience dental anxiety, have a strong gag reflex, or need extensive treatment completed in fewer appointments. Dr Cai holds surgical accreditation at Westmead Private Hospital and Strathfield Private Hospital for procedures requiring general anaesthesia.
Sedation can be combined with virtually any dental treatment, from routine check-ups to implant surgery and smile makeovers.
When Fear Has Been Making the Decisions for You
You know you need to see a dentist. You have known for a while. But the thought of sitting in that chair, hearing the sounds, feeling the vulnerability of it, keeps pushing the appointment back. Another month. Another year.
You are not alone in this. Dental anxiety affects a significant number of adults, and it has nothing to do with toughness or willpower. It is real, it is common, and it is the reason sedation dentistry exists.
Here at Pitt Street Dental Centre, we have designed every part of the experience around making you feel safe and in control. The environment itself, dimmed lighting, aromatherapy, noise-cancelling headsets, Netflix on the ceiling, is built to take the edge off before any clinical work begins. And for patients who need more than atmosphere, we offer a full range of sedation options so you can receive the care you need without the distress.
What Are the Sedation Options at Pitt Street Dental Centre?
We offer three levels of sedation, and the right choice depends on your level of anxiety, the treatment being performed, and your personal preference.
Happy Gas (Nitrous Oxide)
Happy gas is a mild sedative inhaled through a small mask that sits over your nose. It takes effect within minutes, creating a calm, relaxed state while you remain fully conscious and able to communicate. When the mask is removed, the effects wear off within minutes. You can drive yourself home and resume your normal day immediately. Happy gas is ideal for patients with mild anxiety or those who want to take the edge off a routine procedure.
Twilight Sedation (IV Sedation)
Twilight sedation is administered through an IV line by a qualified sedationist. You enter a deeply relaxed, drowsy state where you are technically conscious but unlikely to remember the procedure afterwards. Most patients describe it as feeling like they slept through the appointment. Twilight sedation is ideal for patients with moderate-to-significant anxiety, those undergoing longer procedures, or anyone who wants multiple treatments completed in a single visit without the stress.
General Anaesthesia (Hospital-Based)
For patients who want to be completely asleep during their treatment, Dr Cai performs procedures under general anaesthesia at Westmead Private Hospital and Strathfield Private Hospital. You are fully unconscious throughout, with an anaesthetist monitoring you continuously. This option is used for complex surgical cases such as implant placement, All-on-4 procedures, and patients with severe dental phobia who cannot tolerate treatment in any other setting.
Each option has different preparation requirements, recovery times, and costs. Dr Cai will discuss which level of sedation is appropriate for your situation and treatment plan.
Who Benefits from Sedation Dentistry?
Sedation dentistry is not just for patients with phobias. It is for anyone who wants a more comfortable dental experience:
“I have dental anxiety that has prevented me from seeing a dentist for years”
“I have a strong gag reflex that makes dental treatment difficult”
“I need extensive work done and I want to complete as much as possible in fewer appointments”
“I find it hard to sit still for long procedures”
“I had a bad dental visit in the past and the thought of treatment makes me anxious”
“I want implants, a smile makeover, or complex treatment but I cannot face it without sedation”
We never judge patients for their anxiety. If you have been avoiding the dentist for years because of fear, you are exactly the kind of patient we are set up to help. The combination of our calming environment and sedation options means you can finally get the care you need in a way that feels manageable.
What Does a Sedation Dentistry Appointment Look Like?
01
Consultation (30 to 45 minutes)
We start with a conversation, not a procedure. Dr Cai will discuss your anxiety, your dental history, and what treatment you need. He will explain the sedation options available and recommend the level that suits your situation. If you are not ready for treatment on the first visit, that is completely fine. We can take it at your pace.
02
Pre-Appointment Preparation
For happy gas, no preparation is needed. For twilight sedation, you will need to fast for six hours beforehand and arrange someone to drive you home. For general anaesthesia at hospital, you will receive a pre-admission pack with detailed instructions.
03
Your Treatment Day
You arrive at our practice (or the hospital for GA). The sedation is administered, and once you are comfortably relaxed, Dr Cai begins the dental treatment. Throughout the procedure, your vital signs are monitored. For twilight sedation, most patients have little to no memory of the appointment afterwards.
04
Recovery
Happy gas wears off within minutes. You can leave and drive immediately. Twilight sedation requires a recovery period of 30 to 60 minutes in our practice, and you will need someone to take you home. You should rest for the remainder of the day and avoid driving or making important decisions. General anaesthesia requires several hours of hospital recovery and a full day of rest at home.
05
Follow-Up
We schedule a follow-up to check the dental work and discuss any further treatment. Many patients find that once they have experienced sedation dentistry, subsequent visits feel less daunting, even without sedation.
Happy Gas vs Twilight Sedation vs General Anaesthesia: Comparing Your Options
Happy Gas (Nitrous Oxide)
Twilight Sedation (IV)
General Anaesthesia
Level of sedation
Level of sedationMild relaxation
Level of sedationDeep relaxation (conscious but drowsy)
Level of sedationFully asleep
Administered by
Administered byDentist
Administered byQualified sedationist
Administered byAnaesthetist
Where
WhereIn our Sydney CBD practice
WhereIn our Sydney CBD practice
WherePrivate hospital
Memory of procedure
Memory of procedureYes (you remember everything)
Memory of procedureUsually little to no memory
Memory of procedureNo memory
Recovery time
Recovery timeMinutes
Recovery time30 to 60 minutes
Recovery timeSeveral hours
Can drive home
Can drive homeYes
Can drive homeNo (need someone to collect you)
Can drive homeNo
Fasting required
Fasting requiredNo
Fasting requiredYes (6 hours)
Fasting requiredYes (6+ hours)
Best for
Best forMild anxiety, short procedures
Best forModerate anxiety, longer procedures
Best forSevere phobia, complex surgery
Dr Cai will recommend the appropriate level based on your treatment and comfort needs.
What Are the Risks of Sedation Dentistry? What Should I Know?
All forms of sedation carry some degree of risk, which is why they are administered or supervised by qualified professionals. Dr Cai and the sedation team assess your medical history, current medications, and overall health before recommending any sedation option.
Possible risks:
- Happy gas: minimal risks. Some patients experience mild nausea. The gas is quickly reversible by removing the mask
- Twilight sedation: rare risks include allergic reaction to the medication, respiratory depression, or cardiovascular effects. A qualified sedationist monitors you throughout the procedure
- General anaesthesia: carries the standard risks of any hospital-based anaesthetic, including allergic reaction, respiratory complications, and adverse medication interactions. A specialist anaesthetist monitors you continuously, with full hospital emergency infrastructure available
Recovery considerations by sedation type:
- Happy gas: No restrictions. Resume normal activities immediately. You can drive yourself home
- Twilight sedation: Rest for the remainder of the day. Do not drive, operate machinery, sign legal documents, or consume alcohol for 24 hours. Have someone take you home and stay with you for the first few hours
- General anaesthesia: Rest for 24 to 48 hours. Follow all hospital discharge instructions. Do not drive for 24 hours. Arrange someone to stay with you on the night of the procedure
Transparent pricing, no surprises
Sedation costs are listed separately on our price list. Download it to see the cost of each sedation option alongside your treatment pricing.
Frequently Asked Questions About Sedation Dentistry
How much does sedation dentistry cost in Sydney?
The cost depends on the type of sedation and the length of your appointment. Happy gas is the most affordable option. Twilight sedation carries a separate fee for the sedationist. General anaesthesia includes hospital and anaesthetist fees. We publish all sedation pricing on our downloadable price list, and your treatment quote will include the sedation cost so there are no surprises.
Is sedation dentistry safe?
Yes, when administered by qualified professionals with appropriate monitoring. Happy gas has been used in dentistry for over 150 years with an excellent safety record. Twilight sedation is managed by a qualified sedationist who monitors your vital signs throughout. General anaesthesia is conducted in a hospital with a specialist anaesthetist and full emergency infrastructure. Dr Cai reviews your medical history before recommending any sedation option.
Can I have sedation for a routine check-up and clean?
Absolutely. There is no minimum threshold of treatment required for sedation. If anxiety has been keeping you from having a simple check-up, happy gas or twilight sedation can make it completely manageable.
Will I feel any pain during the procedure?
No. Sedation is used alongside local anaesthetic, not instead of it. The sedation manages your anxiety and awareness, while the local anaesthetic ensures you feel no pain. With twilight sedation, most patients have no memory of the procedure at all.
I have not been to a dentist in years because of anxiety. Will you judge me?
Never. We see patients in this situation regularly, and we understand exactly how they got there. There is no judgement here. We will take it at your pace, start with a conversation, and only proceed with treatment when you are ready.
Payment Plans
Why Choose Pitt Street Dental Centre for Sedation Dentistry in Sydney?
All three sedation levels under one roof
Happy gas, twilight sedation, and hospital-based general anaesthesia. We offer the full spectrum so you get the right level of comfort for your situation, not a one-size-fits-all approach.
Hospital accreditation for complex cases
Dr Cai holds surgical accreditation at Westmead Private Hospital and Strathfield Private Hospital. For patients who need general anaesthesia or whose cases require hospital-level surgical infrastructure, we have the access and the appointment.
An environment designed to calm you before sedation even starts
Dimmed lighting, aromatherapy, noise-cancelling headsets, Netflix on the ceiling, a complimentary beverage menu, and a lounge-style waiting area. Many of our anxious patients tell us the atmosphere alone makes a significant difference to how they feel before treatment begins.
Experience with anxious and phobic patients
We do not rush anxious patients. We listen, we explain, we let you set the pace. Dr Cai and the team have extensive experience managing patients who have avoided dentistry for years due to fear. We understand the psychology of dental anxiety as well as the clinical solutions.
Complete dental capability with sedation
Whether you need a routine check-up, a single crown, or a full mouth rehabilitation with implants and veneers, we can deliver it under sedation. You do not need to be referred elsewhere. Everything happens here or at our accredited hospital facilities.
INSIGHTS & INSPIRATION
Dr Andy _ IV Sedation for Extraction & Bone Graft
Dr Mario – IV Sedation Extraction with Patient Grace
Dr Andy – Talking about IV Sedation
Dr Andy – IV Sedation for Wisdoms Teeth Removal with Patient Elis
Author Attribution:
Medically reviewed by Dr Michael Cai, BDSc (Hons) WA MRACDS (GDP) – July 2026
Medical Disclaimer:
The information on this page is intended for general educational purposes only and should not be considered a substitute for professional dental advice. Treatment outcomes vary between individuals. All surgical procedures carry risks. Please consult Dr Michael Cai or one of our qualified dentists at Pitt Street Dental Centre for personalised advice about your dental health.
