If the thought of sitting in a dental chair makes you want to cancel the appointment, you are not alone. Dental anxiety stops a lot of people from getting the care they need, and for some, the fear goes well beyond nerves. Sedation dentistry, and IV sedation in particular, exists precisely for situations like this. It is designed to help anxious patients get through dental treatment they have been putting off, sometimes for years.
This article explains what IV sedation is, what undergoing IV sedation involves, and what to expect on the day.
Quick Overview
- IV sedation, also called intravenous sedation or twilight sedation, delivers sedative drugs directly into the bloodstream through an IV line, producing a state of deep relaxation.
- Most patients feel drowsy or drift into a light sleep during the procedure, though they remain able to respond if needed.
- It is most commonly used for patients with severe dental anxiety, a strong gag reflex, or those undergoing complex procedures.
- IV sedation is administered and monitored by qualified professionals, and your vital signs are checked throughout the procedure.
Below, we explain how it works, who it suits, and what recovery looks like.
What Is IV Sedation?
IV sedation is a form of conscious sedation where a sedative medication is delivered through a small IV line, usually placed in the back of your hand or arm. The medication enters your bloodstream directly, which means it takes effect quickly, and the level of sedation can be adjusted throughout the procedure.
You will not be under general anaesthesia. You are not fully unconscious. Instead, most patients describe the experience as drifting into a deeply relaxed, drowsy state. Some patients feel sleepy enough to fall into a deep sleep during the procedure, while others stay awake but feel calm and detached from what is happening. Either way, most people have little to no memory of the treatment once it is over.
This is different from inhalation sedation, which uses nitrous oxide gas inhaled through a mask, and from oral sedation, which involves taking a sedative tablet before your appointment. IV sedation produces a deeper level of sedation than both of these options, which is why it is the preferred choice for patients with severe dental anxiety or those undergoing lengthy or complex procedures.
How IV Sedation Works
Before the procedure begins, your treating team will review your medical history, current regular medications, and overall health to confirm you are a good candidate. Your blood pressure, heart rate, and oxygen levels will be monitored throughout using monitoring equipment.
The IV line is placed once you are settled in the chair. Sedative drugs are introduced gradually through the line, and within a few minutes, you will begin to feel drowsy. Most patients feel relaxed almost immediately as the sedation takes effect. Local anaesthesia is still administered to the treatment area to manage discomfort. IV sedation produces deep relaxation but does not replace the need for a local anaesthetic for managing discomfort during the procedure.
During the entire procedure, your vital signs are monitored continuously. The sedation level can be adjusted as needed. You remain able to respond to basic instructions, though you will feel too relaxed to be anxious or distressed.
When the procedure is complete, the sedation is reduced, and you will gradually become more alert. You will feel drowsy for several hours after the appointment, which is why you must arrange for someone to drive you home. Most patients feel back to normal the following day, though recovery time varies between individuals.
Who Is a Good Candidate for IV Sedation?
IV sedation is not necessary for every patient, but it can make an enormous difference for the right person. Your dentist will assess your situation and recommend IV sedation when other options are unlikely to be sufficient for your level of anxiety or the complexity of your treatment. Sedation may also be considered for patients who have previously had difficulty tolerating dental treatment under local anaesthesia alone.
Severe dental anxiety or phobia
For patients whose dental anxiety is severe enough to prevent them from attending appointments or completing treatment, IV sedation allows necessary dental care to go ahead without distress, whether that involves their teeth, gums, or more involved dental surgery. This is the most common reason patients choose twilight sedation or twilight dentistry.
Strong gag reflex
A pronounced gag reflex can make even straightforward dental treatment difficult to complete. IV sedation significantly reduces the gag reflex response, allowing the dentist to work more effectively and comfortably for the patient.
Complex or lengthy procedures
Some dental surgery, including multiple extractions, dental implant placement, or other complex procedures, takes considerable time to complete. IV sedation makes it possible to complete more work in one visit, reducing the number of appointments needed.
Patients who struggle with local anaesthesia
Some people find that local anaesthesia alone does not adequately manage their anxiety, even when physical discomfort is well managed. IV sedation addresses the anxiety component separately from pain relief, working alongside the local anaesthetic rather than replacing it.
What Are the Possible Risks?
IV sedation is generally safe when administered by a qualified professional with appropriate monitoring equipment in place. However, like any dental procedure involving sedative drugs, there are possible risks to understand before proceeding.
Common side effects include feeling drowsy for several hours after the procedure, dry mouth, and some people feel nauseous on waking. Breathing difficulties are rare but can occur, particularly in patients with certain medical conditions. This is one reason a thorough review of your medical history is conducted before the procedure, and why monitoring of vital signs, including blood pressure, heart rate, and oxygen levels, is continuous throughout.
Allergic reactions to sedative medications are uncommon but possible. Your treating team will ask about any known allergies and medical conditions as part of the pre-procedure assessment.
At Boon Dental, IV sedation is administered by a dedicated anaesthetist with an emergency medical doctor present for close monitoring and supervision throughout.
How IV Sedation Compares to Other Sedation Options
Understanding where IV sedation sits compared to other options helps you and your dentist choose the right approach.
Inhalation sedation using nitrous oxide, also called happy gas, produces a mild, calming effect and wears off within minutes. It suits patients with mild to moderate dental anxiety and shorter procedures. Oral sedation involves taking a sedative tablet before your appointment. It produces a moderate level of sedation and is suited to longer procedures where a deeper level of calm is needed, but IV sedation is not required.
IV sedation delivers the deepest level of sedation short of general anaesthesia. It is reserved for patients with severe anxiety, those with complex dental care needs, or situations where other sedation options have not been sufficient.
General anaesthesia places the patient in full unconsciousness and requires specialist facilities and monitoring. IV sedation sits between oral sedation and general anaesthesia in terms of depth, offering deep relaxation with a faster recovery time than a full general anaesthetic.
What to Expect on the Day
Your dentist will give you specific instructions before your IV sedation appointment. These typically include fasting from food and certain drinks for several hours beforehand, stopping some regular medications if advised, and arranging transport home, as you will not be able to drive yourself.
On arrival, the anaesthetist will confirm your medical history and answer any questions. The IV line is placed, and sedation begins. Most patients feel calm and relaxed within a few minutes. During the procedure, you may feel sleepy or drift off entirely. When the treatment is complete, you will be monitored while the sedation wears off before being discharged into the care of whoever is collecting you.
Find Out If IV Sedation Is Right for You
We provide IV sedation with a dedicated anaesthetist present throughout the procedure. If dental anxiety has been affecting your oral health by keeping you away from necessary care, our friendly team can walk you through whether IV sedation is the right option for your situation. Please call us on (02) 8188 3903 to discuss your options.
Frequently Asked Questions
Will I feel discomfort during IV sedation?
IV sedation produces deep relaxation but does not eliminate physical sensation on its own. Local anaesthesia is still administered to numb the treatment area, so you should not feel discomfort during the procedure. The combination of IV sedation and local anaesthetic means most patients feel neither discomfort nor anxiety throughout the treatment.
Can I have IV sedation if I take regular medications?
You must disclose all regular medications to your dentist and the anaesthetist before your appointment. Some medications interact with sedative drugs and may need to be paused or adjusted before the procedure. Do not stop any prescribed medication without guidance from your treating team, as this needs to be managed carefully based on your individual medical history.
Is IV sedation the same as being put to sleep?
No, though it is easy to see why the two are confused. General anaesthesia renders a patient fully unconscious and requires specialist facilities and a dedicated medical team. IV sedation produces deep relaxation, and while many patients do fall asleep during the procedure, they remain able to respond to basic verbal instructions. It is a lighter state than full general anaesthesia, with a faster recovery time and a lower risk profile.
References
https://medlineplus.gov/ency/article/007409.htm
https://pmc.ncbi.nlm.nih.gov/articles/PMC5564087
