Custom Mouth Guards in Seoul
Night guards for grinding and clenching, and sports guards for impact. Compare the types, see how a custom guard is made from a digital scan, and learn how to care for it.
- Since 2002
- 13 dentists
- In-house lab
- EN · 中文 · 日本語
What type of mouth guard do I need?
It depends on the purpose. A night guard (occlusal splint) protects teeth from grinding and clenching during sleep, while a sports guard is thicker and softer to absorb impact. Gangnam One Day Dental Clinic makes both from a digital scan of your teeth, and checks the bite on a night guard with T-Scan so contacts meet evenly. Fitting usually takes 2 visits.
Reviewed by Dr. Kim Jin-hwan , Chief Director · Updated October 5, 2026
Night guard vs sports guard
A night guard is usually a thin, hard or dual-layer acrylic splint covering the upper or lower teeth. It is designed so the opposing teeth glide smoothly across it, which spreads grinding force and stops enamel wear. It is the standard protection for people with teeth grinding.
A sports guard is thicker and made of a softer material that absorbs and spreads the force of a blow. It protects front teeth, lips and the jaw during contact sports and is not designed for nightly grinding.
Why a custom guard rather than a store-bought one
Boil-and-bite and stock guards are inexpensive but often bulky, loose or uneven. An uneven guard can leave some teeth taking all the force, and some people clench more on soft, ill-fitting guards.
A custom guard is designed from a digital intraoral scan, so it fits closely and stays in place without biting to hold it. For night guards, the clinic records contacts with T-Scan Novus during fitting and adjusts the surface so force is shared evenly. This matters especially if you have implants, crowns or veneers, which can chip or overload under grinding.
- Fits your teeth precisely and stays in without effort
- Thinner and easier to speak and sleep with
- Bite balanced on the guard surface
- Can be adjusted at review visits
Not sure if this is right for you? Send a photo or X-ray — a dentist replies on WhatsApp in English, Chinese or Japanese.
Get a free opinionCaring for your mouth guard
Rinse the guard after use, brush it gently with a soft brush and cool water, and let it dry in a ventilated case. Avoid hot water, which can warp it, and keep it away from pets.
Bring it to your regular check-up so the dentist can see wear patterns. Deep grooves or cracks mean it is time to replace it. If you wear a guard and still wake with jaw pain or loud snoring, mention it; a sleep or jaw-joint assessment may be needed.
| Custom night guard | Custom sports guard | Store-bought guard | |
|---|---|---|---|
| Main purpose | Grinding and clenching | Impact protection | Short-term or occasional use |
| Material | Hard or dual-layer acrylic | Thick, soft laminate | Soft thermoplastic |
| Fit | Made from scan; adjusted | Made from scan | Moulded at home; often loose |
| Bite balancing | Yes, checked with T-Scan | Basic check | No |
| Typical lifespan | 2–5 years | 1–2 seasons (sooner for children) | Months |
How it works at Oneday Dental
- Before visit
Tell us the purpose
Say on WhatsApp whether you grind, clench or play a sport, and send photos of your teeth.
- Visit 1
Exam and scan
The dentist checks teeth, jaw and bite, then takes an intraoral scan or impression.
- Lab
Fabrication
The guard is designed and made to your scan in the material suited to its purpose.
- Visit 2
Fit and adjust
The guard is tried in, edges are smoothed and the bite is balanced; night guards are checked with T-Scan.
- 6–12 months
Review
Bring the guard to check-ups so wear and fit can be checked and adjusted.
Hear it from our dentists
Short answers to real patient questions from the Oneday Dental YouTube channel.
Korean audioThings to know before you decide
- A night guard protects teeth but does not stop grinding itself; symptoms can return if it is not worn.
- People with loud snoring or suspected sleep apnea should be assessed before using a standard night guard.
- Children and teens with changing teeth or braces need guards remade more often.
- A guard that feels tight, rocks or causes jaw pain should be adjusted rather than forced in.
Experience you can check
- 2002Founded in Gangnam — 24 years
- 13Dentists in 5 departments
- 3Clinic buildings, 1,570 m²
- 0.01 mmT-Scan bite-force detail
Vice President, Korean Academy of Stomatognathic Function & Occlusion · author on T-Scan implant occlusion (IGI Global)
Custom Mouth Guards: common questions
How long does it take to get a custom mouth guard in Seoul?
Should a night guard go on the upper or lower teeth?
Can I use a sports guard at night for grinding?
How much does a custom mouth guard cost in Seoul?
How do I know when to replace my mouth guard?
You may also want to read
Teeth Grinding & TMJ
Teeth grinding treatment in Seoul: T-Scan bite analysis, TMJ assessment and custom night guards led by an occlusion…
Learn more →Snoring & Sleep Apnea
Sleep apnea and snoring care in Seoul with a custom mandibular advancement device fitted by a dentist in Gangnam.
Learn more →Sensitive Teeth
Sensitive teeth treatment in Seoul: find the cause first, from gum recession to grinding, then fluoride, bonding…
Learn more →Dental Cleaning
Dental cleaning in Seoul: scaling, polishing and gum check in one visit in Gangnam, with English, Chinese…
Learn more →Dental Implants
Dental implants in Seoul with OSSTEM or MegaGen, 3D CT planning and an in-house lab in Gangnam since 2002.
Learn more →Browse: Dental Implants · Cosmetic Dentistry · Orthodontics · Gum Care · General Dentistry · International Patients · Home
Get a dentist's opinion on WhatsApp
Send your question, photos or X-ray. We reply with a plan, timeline and estimate in English, Chinese, Japanese or Korean.
