The memory of gritting through treatment while hearing "the anesthesia isn't quite working."
Now directly into cancellous bone
for near-instant anesthesia.
Seongmo Dental Clinic operates Quicksleeper, an intraosseous anesthesia device where a computer controls pressure and speed. Because it injects anesthetic directly into the cancellous bone near the nerve, there's no need to wait 5-10 minutes, and you can expect reliable anesthesia even in lower molars and inflamed areas where conventional methods often failed.
Sungshin Univ. Seongmo Dental Clinic Computer-Controlled Intraosseous Anesthesia (Quicksleeper)
It's not that the anesthesia doesn't work — it just wasn't reaching where it needed to. Intraosseous anesthesia changes that.
Sungshin Univ. dental intraosseous anesthesia —
what's different about it?
Quicksleeper is an intraosseous anesthesia device where a computer controls injection pressure and speed, delivering anesthetic directly into the cancellous bone around a tooth root. Seongmo Dental Clinic uses it to shorten the anesthesia wait and secure a reliably high success rate.
Fear of the anesthesia injection, and the experience of being treated in pain when anesthesia didn't quite work, are the biggest causes of dental trauma. To fundamentally solve this, Seongmo Dental Clinic introduced Quicksleeper — a premium intraosseous anesthesia device that requires skilled technique and know-how to use.
Standard infiltration anesthesia injects into the gum mucosa and waits for it to seep through bone. If the bone is thick or inflammation is severe, the drug may not sufficiently reach the nerve, leaving anesthesia incomplete. Intraosseous anesthesia skips that step and delivers directly inside the bone.
Quicksleeper Core Technology
So Comfortable You Won't Even Notice the Injection
Instant Anesthesia — No Waiting
Reliable Anesthesia in Any Case
Eliminating Unnecessary Discomfort
It requires expensive equipment and skilled technique, but we believe that if there's a way to reduce fear, choosing it is simply the right thing to do.
The reason an injection hurts
isn't the needle — it's the pressure
Much of the pain from an anesthesia injection comes from the pressure placed on tissue as anesthetic is pushed in quickly. Computer-controlled injection keeps that speed constant, reducing pressure pain.
It's hard to keep the speed constant when pressing a syringe by hand. Even a slight increase causes tissue to expand suddenly, producing pain — the source of that "sharp, throbbing" sensation many people remember.
In Quicksleeper, a motor pushes anesthetic in at a fixed speed. It starts out very slowly to give tissue time to adjust, then delivers the needed amount evenly. Seongmo Dental Clinic also uses i-ject computer-controlled painless anesthesia alongside it, choosing the method that fits each case.
How We Prepare Before Anesthesia
Topical Anesthesia
Device Selection
Speed Control
Instead of asking you to endure pain, we build conditions where pain doesn't arise.
Lower Molars, Severe Inflammation —
why doesn't anesthesia work well there?
The lower molar area has thick cortical bone that's hard for medication to penetrate, and severely inflamed tissue has reduced anesthetic effect due to its acidic environment. Direct injection into cancellous bone bypasses both barriers.
A tooth that needs root canal treatment is often already severely inflamed. Having anesthesia fail to work at exactly that moment, and enduring pain through treatment, is what drives people away from the dentist.
Seongmo Dental Clinic applies intraosseous anesthesia in these cases to reduce the chance of anesthesia failure. Combined with Plazen RCT® plasma root canal treatment, we can lower the burden of both the anesthesia stage and the disinfection stage.
Especially Helpful In These Cases
Lower Molar Root Canal
Acute Pulpitis · Severe Pain
Past Anesthesia Failure
Most of the time, "I just don't respond well to anesthesia" was a problem with the method, not your body.
After Treatment —
hours of lingering numbness
Because Quicksleeper acts selectively around the tooth being treated, it can reduce the time spent with broad numbness across your lips, tongue, and cheek that makes eating and talking awkward.
Mandibular block anesthesia is broad and reliable, but leaves lips and tongue numb and uncomfortable for hours after treatment. Some people unconsciously bite their numb lip and get hurt.
Intraosseous anesthesia is concentrated around just the tooth that needs it, so this discomfort is reduced. That said, block anesthesia is sometimes more suitable depending on the case, and Seongmo Dental Clinic chooses the method to fit the treatment scope and duration.
After-Anesthesia Care
Until Sensation Returns
Please Let Us Know If
Anesthesia isn't just the start of treatment — it's the step that shapes the entire treatment experience.
Conventional Anesthesia vs. Computer-Controlled Intraosseous Anesthesia
| COMPARISON | Conventional Infiltration/Block | Seongmo Dental Clinic Quicksleeper |
|---|---|---|
| Injection Site | Gum mucosa | Directly into cancellous bone |
| Injection Pressure | Relies on hand feel | Automatic computer control |
| Onset Time | 5-10 min wait | Near-Instant |
| Difficult Cases | May fail with thick cortical bone/inflammation | Reliable effect expected |
| ANESTHESIA EXTENT | Broad — lips, tongue, cheek | Tooth-level, selective |
| After Treatment | Numb for hours | Shorter numbness |
The method used depends on treatment scope, location, and overall health, and block anesthesia may be combined depending on the case.
Intraosseous Anesthesia — Glossary
- Intraosseous Anesthesia
- An anesthesia method that injects anesthetic directly into the cancellous bone around a tooth root.
- Cancellous Bone
- The sponge-like tissue inside bone. Blood vessels and nerves run through it, so drugs spread quickly.
- Cortical Bone
- The hard outer layer of bone. The thicker it is, the harder it is for anesthetic to penetrate.
- Infiltration Anesthesia
- A common anesthesia method that injects into the gum mucosa and lets it seep through bone.
- Block Anesthesia
- A method that numbs a wide area by anesthetizing around a nerve trunk; mainly used in the lower jaw.
- PDL Anesthesia
- A method that injects a small amount into the ligament space around a tooth, numbing only that tooth.
Sungshin Univ. Intraosseous Anesthesia — FAQ
Intraosseous anesthesia means injecting into bone — doesn't that hurt?
We apply topical anesthesia before injecting, and the computer starts at a very slow speed to reduce pressure pain. Many patients say it's comfortable enough that they don't even notice when it starts.
Doesn't making a hole in the bone cause problems?
Intraosseous anesthesia uses a very fine tip to access the cancellous bone, and the site heals naturally on its own. That said, we determine suitability based on the location and your overall health before applying it.
I've been told I don't respond well to anesthesia — will this work for me?
Conventional anesthesia often falls short when the lower jaw's cortical bone is thick or inflammation is severe. In these situations, intraosseous anesthesia delivers anesthetic directly near the nerve, so you can expect a reliable effect.
Do my lips stay numb for a long time after treatment?
Since it numbs selectively at the tooth level, widespread numbness is reduced. That said, if the treatment area is large, block anesthesia may be combined, so it varies by case.
Can children or elderly patients receive this too?
It's less about age and more about overall health, cooperation, and treatment scope. We choose the appropriate anesthesia method after checking medications and medical history.
Is there an extra charge for anesthesia?
Seongmo Dental Clinic provides the anesthesia needed for treatment as part of the standard care process. If any non-covered items are involved, we'll let you know in advance.
References — Authoritative Medical Sources
Related Treatment Info
- All Advanced Equipment (Sungshin Univ.)
- Seongmo Special Care · Saving Natural Teeth
- General Dentistry · Cavities/Root Canal/Scaling
- Implants (Sungshin Univ.)
- Same-Day Restorations (Seongbuk-gu)
- Non-Covered Fee Guide
Results of any dental treatment can vary with individual oral condition, and whether a device applies depends on the case. Treatment method should be decided after a precise diagnosis and thorough consultation with your provider.