# No More “Fat Lip”: How Targeted Numbing Works

> Fatemi Family Dentistry · https://fatemifamilydentistry.com/targeted-dental-numbing-no-more-fat-lip/
> Updated 2026-08-31
> The numb-face, drooping-lip feeling after the dentist isn't inevitable. How computer-controlled, single-tooth numbing targets only the tooth being treated. Revi

*Medically reviewed by Dr. Ali Fatemi, DDS, FAGD, MAGD, FICOI, MaCSD — Fatemi Family Dentistry, Gaithersburg & Lexington Park, MD.*

**The half-numb face, the drooping lip, the two hours of not being able to drink coffee without wearing it — that’s not the treatment, it’s the anesthetic spreading further than it needed to.** Newer, targeted numbing can numb just the tooth being worked on and leave the rest of your face feeling normal. Here’s how it’s different from the classic dental shot.

## Why the traditional shot numbs so much

A standard lower-jaw injection (a “block”) deposits anesthetic near a main nerve branch, which numbs everything downstream of it — the tooth, yes, but also your lip, cheek, and half your tongue. It works, but it’s a broad approach for what is often a single-tooth job, and that over-numbing is the part patients dislike most.

## What targeted, computer-controlled numbing does

We use a computer-controlled delivery system that lets us numb a **single tooth** by delivering anesthetic precisely, at a controlled, steady rate. Two things change as a result:

- **Less collateral numbness.** Because it targets the specific tooth, your lip and face are far less likely to go numb — many patients walk out able to talk and eat normally.
- **A gentler injection.** The sting of a dental shot comes largely from anesthetic being pushed in too fast. Computer-controlled flow delivers it slowly and evenly, which most people find noticeably more comfortable than a hand-pushed syringe.

Dr. Fatemi uses an electronic anaesthesia system that delivers the anaesthetic slowly and steadily, which significantly reduces the discomfort of the injection itself.

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## Who benefits most

Targeted numbing is especially worth asking about if you:

- hate the lingering numb-face feeling and want to get back to your day;
- have a single tooth being treated rather than a whole quadrant;
- are anxious specifically about “the shot” — the slower delivery takes the edge off;
- have had trouble getting fully numb with standard injections in the past.

## How it fits with sedation

Numbing and sedation do different jobs and often work together. Local anesthetic blocks pain at the tooth; [sedation](/iv-sedation-dentistry/) calms your whole body and nerves. For a comfortable, anxious, or lengthy visit you might have both — targeted numbing so the tooth feels nothing, and sedation so you’re relaxed or asleep for the experience. They’re complementary, not either/or.

## It’s a small thing that changes the whole visit

Comfort details like this are easy to overlook when choosing a dentist, but they’re exactly what determines whether you actually keep your appointments. Not having to plan your afternoon around a numb face is a bigger deal than it sounds.

[**See the comfort technology we use across our care →**](/services/)

Curious whether targeted numbing is right for your treatment? [Ask our Gaithersburg or Lexington Park team](/contact-us/).

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*General information, not a diagnosis. Which anesthetic approach suits a given procedure is a clinical decision made with you. Please confirm all clinical content against your practice’s regulatory and compliance requirements before publication.*

## Practice locations

- **Gaithersburg** — 604 S Frederick Ave #209, Gaithersburg, MD 20877 · (301) 740-2686
- **Lexington Park** — 22684 Three Notch Rd, Lexington Park, MD 20653 · (301) 737-4747