Conscious sedation in dentistry: what happens on the day, and who can provide it

What conscious sedation actually is

Sedation runs along a continuum, from light anxiolysis through to general anaesthesia, and conscious sedation deliberately occupies the shallow end of it. You keep spontaneous breathing, your protective airway reflexes, and the ability to respond to a spoken instruction or a light touch (Bean & Aruede, 2023). Anything that takes consciousness away is general anaesthesia by definition, and in the UK it is not permitted in a primary dental care setting at all (SDCEP, 2017).

The drug goes in through a small cannula that stays in the vein, not through a single injection withdrawn straight afterwards. The published protocol gives a sense of how deliberately slow the process is: 2 mg of midazolam injected slowly, a 90-second pause to watch how you respond, then further 1 mg increments at one-minute intervals until a safe and satisfactory level is reached (Bean & Aruede, 2023). That stepwise build-up is called titration, and it is the safety mechanism itself. UK guidance rules out fixed doses and bolus techniques in explicit terms, and requires the cannula to stay in place until you meet the discharge criteria (SDCEP, 2017).

Because the endpoint is your response rather than a number, the final dose differs from person to person and from procedure to procedure. In a retrospective series of 233 anxious adults sedated with intravenous midazolam, two variables predicted a higher dose: younger age, and non-surgical periodontal therapy with root planing, a long and uncomfortable appointment by nature. The author is careful to add that the variables which did not predict dose, including medical history, ASA status and current medication, still matter when the treatment plan is drawn up (Abed, 2025).

What sedation changes, and what it leaves untouched

The effect people come for is the calm during the appointment, which makes treatment possible where it had been repeatedly postponed. The second effect is less well known and often more useful: anterograde amnesia. Benzodiazepines interfere with laying down new memories while they are active, so the account you keep of the session tends to be hazy or absent. That matters for anyone whose fear has been built by a run of appointments that went badly, because it interrupts the reinforcement.

Sedation also suppresses a strong gag reflex, which helps in the back of the mouth and during impressions, and it allows work that would have been split across several visits to be done in one sitting. A service evaluation of 100 consecutive patients sedated in a UK general dental practice found that 91 % felt they had received enough sedation and 50 % could remember the events of the treatment, with the most extensive case, immediate full-arch implant loading, averaging 11.7 mg of midazolam over its duration, or 4.5 mg per hour. The authors note that the British National Formulary recommends a maximum of 7.5 mg, and argue from their data that a dose matched to the length of the procedure is a more valid approach than a fixed ceiling, and that age is not an absolute limit on sedating older patients (Cowell et al., 2024).

Three limits belong alongside those benefits. Sedation does not remove pain, which is the job of the local anaesthetic. It does not treat the fear itself, which is what behavioural and psychological approaches are for, covered in our article on the fear of the dentist. And it does not remove the need for you to cooperate, since the whole technique rests on verbal contact being kept.

What is being targeted	What delivers it
Pain during treatment	Local anaesthetic
Anxiety during the visit	Intravenous sedation
Memory of the visit	The amnesic effect
The fear itself	Psychological treatment

Who it suits

Three groups come up consistently in the indications clinicians record. The first is patients whose anxiety is severe enough that the real choice is between treatment under sedation and no treatment at all. The second is long or invasive procedures, such as multiple extractions, extensive implant surgery or bone grafting, where sedation makes a stretch of chair time tolerable that otherwise would not be. The third is people who cannot stay still long enough for careful work, whether for neurological, motor or cognitive reasons.

A full mouth restoration planned as a small number of long appointments falls into the second group by design, and so does the surgical stage of dental implant treatment.

Not every situation is suitable. Pregnancy, a known allergy to the drug and certain drug interactions are contraindications, while upper airway obstruction, obesity and sleep apnoea call for particular caution (Bean & Aruede, 2023). Assessment also records your ASA physical status, a grading of general health: most ASA grade III patients are referred to secondary care, though some can be treated in primary care depending on how stable their condition is and what facilities are available, and ASA grade IV patients requiring dental sedation should be referred to an appropriate secondary care facility (SDCEP, 2017). This is why a full medical history, including medicines you take without a prescription, comes before any decision.

Who is allowed to give it

UK guidance expects assessment for sedation to take place at a separate appointment before the treatment visit, so that the whole history can be considered and so that you have time to think about the options without the pressure of being treated the same day. Assessment on the day is accepted in an emergency, and other arrangements can be justified if they still allow thorough assessment and valid consent (SDCEP, 2017).

Delivery itself sits with a trained dental sedation team, not with an anaesthetist by default. A dentist trained and assessed to the recognised standards can provide intravenous sedation in general practice, working with a trained team, monitoring equipment and emergency drugs on site, and following the same sequence of assessment, titration and discharge that a hospital service would. The UK service evaluation cited above describes exactly that setting, in a single private practice (Cowell et al., 2024). The arrangement differs elsewhere in Europe, and in France in particular the intravenous route is presented by practices as a procedure carried out by a medical anaesthetist, after an anaesthetic consultation and with a recovery area on site. If you are being treated abroad, the question to ask when you book is a simple one: who administers the drug, and where.

Preparing for the appointment

Food and drink is where the advice circulating online is least reliable. UK guidance, produced through a process accredited by NICE, gives a key recommendation that is individual rather than fixed: advice about whether or not to fast is decided case by case, on the patient, the sedation technique and the procedure. Where there is no indication to fast, a patient due to receive conscious sedation can eat and drink on the day of the appointment, avoiding alcoholic drinks and large meals. Where a significant risk of aspiration or another indication is identified, fasting is considered, using the 2-4-6 rule of anaesthesia, that is two hours for clear fluids, four for breast milk and six for solids. The evidence base on fasting before dental sedation is itself described as low quality (SDCEP, 2017).

Situation assessed	Advice that follows
No indication to fast	Eat and drink on the day
Aspiration risk identified	The 2-4-6 fasting rule
Either way	No alcohol, no large meal

That flexibility only applies if your own team has decided it for you and written it in your notes. Whatever instruction you are given in writing takes precedence over anything you read elsewhere, and a stricter protocol does not signal that something is wrong.

Two other requirements are not negotiable. A responsible adult escort must accompany you, be capable of looking after you unaided, and take you home, preferably by car or taxi rather than public transport. That person needs to stay with you for the rest of the day as a minimum, and possibly overnight if you are sedated later in the day. If either of you is unwilling or unable to meet those conditions, the sedation must not go ahead (SDCEP, 2017). Beyond that, carry on with your usual prescribed medicines unless told otherwise, and declare everything you take, prescribed or not.

Local anaesthetic is still needed

Intravenous sedation does not replace local anaesthetic. Midazolam has no analgesic property whatsoever, so without local anaesthetic the pain signal reaches the central nervous system exactly as it normally would, with the single difference that a sedated patient reacts to it less visibly (Bean & Aruede, 2023). The two are therefore used together, with the local anaesthetic usually given once sedation is established, which incidentally removes the apprehension for patients whose particular fear is the needle.

What is monitored while you are sedated

Monitoring starts before the drug is given and does not stop until you are discharged. For an adult having any technique other than inhalation sedation, the minimum is clinical signs, oxygen saturation by pulse oximetry and blood pressure, the last of these recorded before treatment, during it at intervals suited to your condition, and afterwards. Clinical signs here means level of consciousness and depth of sedation, airway patency, rate and depth of breathing, skin colour, capillary refill, and pulse rate, rhythm and volume. ECG and capnography are not currently required for conscious sedation in dentistry, though they may be appropriate for ASA grade III and IV patients (SDCEP, 2017). Equipment never replaces watching the patient, and both run in parallel (Bean & Aruede, 2023).

If sedation goes deeper than intended, flumazenil reverses the benzodiazepine within one to two minutes. Because it wears off faster than midazolam does, giving it means monitoring you closely for up to two hours in case you become re-sedated (Bean & Aruede, 2023). In the series of 100 UK patients, one person needed supplemental oxygen and flumazenil was never required across the whole cohort (Cowell et al., 2024).

Recovery, discharge and the next 24 hours

Recovery is a graded step-down that happens in an area separate from the waiting room, watched by a trained member of the team, with the drugs and equipment for sedation complications immediately to hand. You are only allowed to leave once every discharge criterion is met: oriented in time, place and person; vital signs stable and within normal limits for you, with breathing uncompromised; pain and discomfort dealt with; haemostasis achieved where relevant; the cannula removed; the responsible escort present; and written as well as verbal post-operative instructions handed over. The decision itself rests with the sedationist (SDCEP, 2017).

A prospective cohort of 101 patients sedated intravenously for dental treatment gives a sense of the timings involved. Every procedure was completed without a rescue sedative, vital signs stayed within 20 % of baseline throughout, 69 % of patients rated the anxiolytic effect as high or very high against a mean baseline anxiety score in the phobic range, and psychomotor recovery on a standardised test took a mean of 49 minutes (Grossi et al., 2025). Those figures come from a study of remimazolam, not midazolam, so the recovery time in particular should not be transferred to every drug in use.

The 24 hours afterwards need more caution than most people expect, because you will feel clear-headed some time before you actually are. During that window you must not drive, operate machinery or sign anything legally binding, and you should not be left alone (Bean & Aruede, 2023). Drowsiness and gaps in memory can outlast the appointment by a good margin, and bruising or soreness at the cannula site is ordinary.

Sedation does not have to be permanent

Patients using the technique for the first time usually want to know whether every future appointment will now require it. A prospective Japanese cohort followed 51 patients with dental phobia treated under intravenous sedation and found that 25 of them were able to stop using it over the course of their treatment, while 26 remained dependent on it. The more interesting finding was a mismatch between what the two groups felt and what their bodies did: salivary alpha-amylase, a physiological stress marker, was significantly higher in the sedation-dependent group from the waiting room onwards, while self-reported fear, tension and anxiety scores did not differ between the groups at any point (Takemura et al., 2026). A run of appointments that go well genuinely changes some patients’ relationship with the chair, and what you consciously feel is not always what is being recorded underneath.

That is also the argument for pairing sedation with work on the fear instead of treating it as a complete answer on its own.

At Body Expert, your dental treatment plan in Turkey is built from your radiographs and your medical history, and how your anxiety will be handled is part of that conversation with the team looking after you, with an English-speaking patient coordinator as your point of contact throughout. Request your free quote, with no obligation and a reply within 24 hours.

Sources

Abed, H. (2025). Factors influencing midazolam dose for intravenous sedation in dental patients with anxiety: A retrospective observational study. Oral Health & Preventive Dentistry, 23, 499-506. https://doi.org/10.3290/j.ohpd.c_2226

Bean, T., & Aruede, G. (2023). Conscious sedation in dentistry. In StatPearls. StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK592406/

Cowell, A., Hare, K., & Campbell, C. (2024). Adult intravenous sedation in general dental practice: Indication, effectiveness and patient experiences. British Dental Journal. Advance online publication. https://doi.org/10.1038/s41415-024-7562-x

Grossi, G. B., Menozzi, G., Maiorana, C., Pellegrini, M., Carraro, M., Galeotti, A., Scribante, A., Papaleo, A., Losappio, S., & Sofi, G. (2025). Remimazolam besylate in intravenous conscious sedation for dental treatment: A prospective cohort study. British Dental Journal. Advance online publication. https://doi.org/10.1038/s41415-025-8664-9

Scottish Dental Clinical Effectiveness Programme. (2017). Conscious sedation in dentistry: Dental clinical guidance (3rd ed.). NHS Education for Scotland. https://www.sdcep.org.uk/media/iegenn4c/sdcep-conscious-sedation-guidance.pdf

Takemura, Y., Mukai, Y., Morozumi, T., Arai, K., Wakita, R., Mizutani, A., Matsumoto, A., & Sanuki, T. (2026). Physiological and subjective measures associated with withdrawal from intravenous sedation in dental phobia: A prospective cohort study. Journal of Clinical Medicine, 15(2), 614. https://doi.org/10.3390/jcm15020614