For most patients, the word “anaesthetic” does more to settle nerves than any amount of reassurance about the procedure itself. Knowing what goes in, how it works, and what to expect from it is genuinely useful before you come in for surgical tooth extraction in Dreghorn. So here’s a straightforward explanation — no jargon where it can be avoided, honest about what works and what doesn’t.
Local Anaesthetic: The Default and the Right Choice for Most
The standard anaesthetic for surgical tooth extraction in a general dental practice is local anaesthetic. Specifically, a dental local anaesthetic solution injected near the nerve that supplies the tooth and surrounding tissues. It doesn’t knock you out, it doesn’t sedate you — it simply switches off pain signals from a specific area while you remain fully awake and aware of everything else.
The active agent in most dental local anaesthetics is lidocaine, typically combined with a small amount of adrenaline (epinephrine). The adrenaline isn’t there for your heart — it’s a vasoconstrictor. It narrows the blood vessels at the injection site, which keeps the anaesthetic concentrated in the right area for longer, reduces bleeding during the procedure, and means the numbness lasts long enough to complete the work comfortably.
Actually, that’s worth being specific about. The numbness from a lidocaine-with-adrenaline block typically lasts two to four hours for the soft tissue (lip, tongue, gum) and slightly less for the pulp of the tooth itself. You’ll feel numb for noticeably longer after the procedure than the procedure took.
How We Deliver It for Different Teeth
The injection technique depends on which tooth is being removed. It’s not one-size-fits-all, and getting the right block in the right place is what makes the difference between a comfortable extraction and an uncomfortable one.
For lower teeth — including the lower wisdom teeth most commonly needing surgical removal — we use an inferior alveolar nerve block. The needle goes into the soft tissue at the back of the mouth near the mandibular foramen, the point where the inferior alveolar nerve enters the lower jaw. Done correctly, this numbs the lower teeth on that side, the lower lip, and part of the tongue. It takes three to five minutes to reach full depth of anaesthesia, which is why we wait after the injection rather than starting immediately.
For upper teeth, we typically use infiltration anaesthetic — injected into the tissue above the tooth. The upper jaw bone is less dense than the lower jaw, so the anaesthetic diffuses through to the nerve endings more easily. For upper wisdom teeth, a palatal injection is often added to ensure the palate-side of the gum is adequately numb.
| Tooth Location | Injection Type | Area Numbed | Time to Take Effect |
|---|---|---|---|
| Upper front or back teeth | Infiltration | Local gum and tooth | 1–2 minutes |
| Upper wisdom tooth | Infiltration + palatal block | Tooth, buccal gum, palate | 2–3 minutes |
| Lower back teeth and wisdom teeth | Inferior alveolar nerve block | Entire lower quadrant, lip, tongue | 3–5 minutes |
| Lower front teeth | Mental nerve block or infiltration | Front lower teeth and chin | 2–3 minutes |
Does the Injection Hurt?
The honest answer is that it can sting briefly, particularly the inferior alveolar block. We apply topical anaesthetic gel to the gum before the injection to reduce the initial sharp sensation, and we inject slowly — fast injection is a major contributor to discomfort and there’s no reason for it. Slow, steady pressure is far kinder than speed.
In our experience, the anticipation is consistently worse than the reality. We’ve had patients grip the armrests through the topical gel stage and then express surprise that the injection itself wasn’t what they were bracing for. The discomfort is real but brief — typically a few seconds of stinging or pressure. Not pleasant, but manageable.
But here’s the thing patients don’t always realise: if you’re still feeling pain when we start the extraction, tell us. We stop and we top up. There’s no award for enduring it, and working through a patient’s discomfort isn’t something we want to do any more than you want to experience it. Adequate anaesthesia is non-negotiable. We’ve topped up patients mid-procedure and it doesn’t extend things dramatically.
What You’ll Feel (and Won’t Feel) During the Procedure
Numb doesn’t mean you feel nothing at all. Patients often don’t realise this going in and then think something has gone wrong when they feel pressure or vibration during the extraction.
Local anaesthetic blocks pain signals. It doesn’t eliminate the sense of pressure, touch, or movement. When we apply force to section a tooth or lever it from the socket, you feel that as pressure — sometimes quite significant pressure. You might feel vibration from instruments. You might sense the temperature of irrigation fluid. None of that is pain, but it can be startling if you weren’t expecting it.
We always explain this before we start. The sensory experiences during a surgical extraction are: pressure, pushing, vibration, and sometimes a cracking or crunching sound as a tooth or root breaks away from the socket. The sounds, in particular, seem much larger inside your head than they actually are. It’s worth knowing that beforehand.
What If I Want Sedation?
Some patients want more than local anaesthetic alone, and that’s a reasonable preference rather than a failing. Conscious sedation — most commonly intravenous sedation with midazolam — is used in some settings for anxious patients or for complex surgical cases.
With IV sedation, you remain conscious but deeply relaxed, and you typically have little or no memory of the procedure afterwards. It’s used alongside local anaesthetic, not instead of it — you still need to be numb; the sedation addresses the anxiety and awareness rather than the pain.
IV sedation requires additional monitoring, a recovery period, and someone to take you home. It’s not always available at every general dental practice for routine surgical extractions, but we can discuss what’s appropriate for your situation. For patients with significant dental anxiety, we can discuss options to make the experience as manageable as possible.
According to NHS Inform’s guidance on tooth extraction, local anaesthetic is the standard approach for extraction procedures, with sedation and general anaesthetic reserved for specific clinical indications or significant patient anxiety. General anaesthetic for extractions is now generally delivered only in hospital settings in Scotland.
What About General Anaesthetic?
General anaesthetic for dental extractions is much less commonly used than it was 20 or 30 years ago. In our experience, the shift away from GA for routine extractions has been a good one — the risks associated with general anaesthetic are real, even in healthy adults, and local anaesthetic done properly achieves the same result without those risks.
GA for dental extractions is now typically reserved for patients who are unable to cooperate with local anaesthetic treatment (for example, those with significant learning disabilities or severe phobias that prevent any conscious treatment), or for very complex surgical procedures that require hospital-level care. Your own GP or dentist can make a referral if there are clear clinical grounds.
Look, the vast majority of surgical extractions, including complex lower wisdom teeth, are completely manageable under local anaesthetic. The patients who come in convinced they need to be knocked out often leave having had a far less dramatic experience than they feared.
We Had a Patient Worth Mentioning
We had a patient in his fifties who’d refused dental treatment for over a decade because of a traumatic experience with anaesthetic in childhood — he’d been told he was numb when he wasn’t, and the extraction proceeded anyway. Understandably, he’d avoided everything since. When he came to us, we spent a considerable amount of time at consultation just talking through how we work. We did a simple test at the start of every injection thereafter — touch the area with an instrument and ask what he felt before we did anything further. Two extractions later, no problems. In our experience, the patients with the worst dental anxiety are usually the ones who were failed by poor communication in the past, not patients whose anxiety is irrational.
Getting Ready for Your Appointment
Before a surgical extraction under local anaesthetic, eat normally — don’t come in on an empty stomach. Have a good meal two to three hours beforehand. You’ll want food in you, and most patients find the idea of eating easier before the procedure than after. Wear comfortable clothing. Arrange a lift home if possible.
If you have any questions about what anaesthetic we’ll use for your extraction, or if you’re nervous about the procedure, talk to us before you book. We’re at StormDental, reachable on 01294 218 733. We’re in Dreghorn, North Ayrshire, and we’ve helped a lot of anxious patients through surgical extractions they thought they couldn’t face. The conversation beforehand makes an enormous difference — we’d rather have it than not.
