REAL CASE
We saved teeth that were
recommended for extraction
Successful preservation of teeth after
other hospitals recommended extraction.
Periapical Lesion Healing
Molar recommended for extraction due to root-tip inflammation
Before
After
Complete healing of periapical lesion 1 year 2 months after root canal treatment
Periapical Lesion Healing
Molar with pus due to severe inflammation
Before
After
Complete healing of periapical lesion 6 months after treatment
Re-Root Canal Treatment
Molar with recurrence after treatment at another hospital
Before
After
Successfully treated by finding an additional canal through re-root canal treatment, complete recovery after 1 year 9 months
Apicoectomy
Front tooth with inflammation spread to the root tip
Before
After
Complete healing of lesion after re-root canal treatment and apicoectomy
"
Is there any way to save my teeth
instead of getting implants?
Other places just told me I had to pull them out...
At Yonsei Ona, 3 specialists
look for possibilities together
Specialists from each field review together
to find what one doctor might miss.
Integrative Dentistry Specialist
Overall dental status diagnosis
Comprehensive assessment including how cavities affect other teeth
Prosthodontics Specialist
Tooth restoration planning
Prosthetic design to ensure saved teeth last a long time
Orthodontics Specialist
Occlusal analysis
Treatment considering the balance of biting force after procedure
When 3 specialists look together,
more teeth can be saved
Extraction is the last resort.
We find every possibility through collaboration.
TREATMENT
Cavity & Root Canal Treatment
Guiding you through the process of
preserving your natural teeth
Cavity Treatment
Early Cavity Treatment
Detecting hidden cavities with Q-ray diagnosis
Resin Treatment
Aesthetic restoration with the same color as natural teeth
Inlay · Onlay
Precise preservation treatment even for large cavities without extraction
Root Canal Treatment
Pain Relief
Restoring comfort by removing severe toothache
Tooth Preservation
Saving natural teeth without extraction
RF Plasma Sterilization
Reducing recurrence with 3D root canal sterilization
DIAGNOSIS SYSTEM
We don't just look
at your teeth
We provide integrated oral care solutions considering
overall health status and future predictions.
Four Data-Driven Diagnosis System
CBCT 3D Diagnosis
Accurately identifying interproximal cavities and periodontitis through 3D imaging
Q-ray Precision Diagnosis
Detecting early cavities and tooth cracks that are difficult to see with CBCT
Q-ray Plaque Analysis
Objectively explaining the need for treatment by quantifying plaque levels
Oral Microbe Test
Identifying potential oral disease factors in advance
"Since every step of the treatment decision is presented logically,
patients trust the process themselves."
Q-RAY SYSTEM
Q-ray Diagnosis System
Q-ray Cam Pro
Overall check of oral status by capturing full arches (upper and lower)
Q-ray Pen C
Precise imaging of individual teeth to observe status and progress
Q-ray View Pro
Improving treatment accuracy by checking oral status simultaneously during procedure
Predicting Oral Disease with AI Image Analysis
Image Correction
ISP-based precision correction
Image Analysis
AI-based automatic extraction
Diagnosis
Automatic tooth status classification
Data Management
Cloud EHR integration
Accurate diagnosis is the start of accurate treatment.
Integrated diagnosis looking at past, present, and future.
PLASMA ENDO
Reducing Root Canal Recurrence
with Plasma Technology
Completely sterilizing bacteria within root canals
three-dimensionally with high-frequency energy.
Easy ENDO RF Plasma System
3D sterilization of bacteria in root canals using high-frequency energy
Why Plasma Endo?
The root canal is a 3D structure, making it difficult for files to reach everywhere. Residual organic matter and bacteria in micro canals, accessory canals, and dentinal tubules are hard to remove using traditional methods. RF Plasma effectively sterilizes these areas using high-frequency energy.
3D Sterilization
Sterilizing even fine root canals and accessory canals that files cannot reach
Effective Hemostasis
Rapid hemostasis and coagulation even in cases of heavy bleeding
Reduced Recurrence
Preventing recurrence by completely removing residual organic matter and bacteria
How Yonsei Ona is Different
Treatment Method
General Clinic
Yonsei Ona
Mechanical Nerve Removal
Used
Used
Chemical Cleaning
Used
Used
Plasma Endo
Not Used or
Used Alone
Traditional +
Plasma Combined
Philosophy
Efficiency-focused
Quality-focused
"To leave no room for bacteria to hide,
we combine all available methods."
SCIENTIFIC DIAGNOSIS
Manage Your Teeth to
Prevent More Cavities
Preventing recurrence and protecting other teeth
The first dental hospital in Korea to introduce NGS microbial testing
🧬 Collaborating with Global Genomics Leader Macrogen
NGS (Next-Generation Sequencing)
Precisely analyzing over 700 types of oral microbes
to identify cavity-causing bacteria in advance.
Why Microbial Testing for Cavities?
Cavities aren't just caused by "not brushing." In oral environments with many cavity-causing bacteria like Streptococcus mutans, cavities are prone to return even after treatment. Knowing the causative bacteria allows for post-treatment management and prevention for other teeth.
Personalized Analysis Report
Detailed results provided within 2-3 weeks after testing
Oral Health Determines Systemic Health
Harmful oral bacteria can enter the bloodstream and spread throughout the body,
linking to cardiovascular disease, diabetes, dementia, and more.
Oral Microbes and Systemic Health
Latest medical research shows that periodontal bacteria are closely linked to heart disease, stroke, and diabetes. Early detection of harmful bacteria through oral microbial testing can prevent systemic health issues.
We Recommend This Test For
Frequent Cavity Recurrence
Precisely analyzing the type and amount of cavity-causing bacteria
Post-Treatment Maintenance
Monitoring to prevent recurrence around treated areas
Prevention for Other Teeth
Preventing new cavities by improving the oral environment
Simple Test Process
Saliva Collection
Takes 3 min
NGS Analysis
Macrogen
Consultation
After 2-3 weeks
Cavity treatment—the next step is what matters.
We take responsibility for prevention and recurrence protection.
ONE-DAY TREATMENT
24-Hour Completion
Digital Inlay System
We aim for rapid treatment completion with
digital scanning and an in-house dental lab.
Precise Digital Scanning
Accurately 3D scan teeth with an intraoral scanner
for more precise and comfortable treatment
without the uncomfortable impression-taking process.
In-house Milling Machine Fabrication
Based on digital scan data, high-quality ceramic blocks
are precisely milled in-house, enabling
treatment completion within 24 hours.
In-house Dental Laboratory
While external labs take at least 5-7 days,
direct fabrication in our in-house lab allows for
fast and precise prosthetic completion.
Advantages of One-Day Inlay
Fast Treatment Completion
Treatment is completed in a single visit, without disrupting your busy schedule.
Precise Prosthetics
Perfectly custom-made through digital scanning and milling machines.
Immediate Use
You can enjoy regular meals immediately without the need for temporary prosthetics.
Don't stop your busy life for dental treatment.
Completed like a natural tooth in just one day.
DENTAL PHOBIA CARE
Afraid of the Dentist?
We Understand Your Heart
CEO Dr. Kim Yu-seong × Mental Health Specialists
Safe Dental Treatment System for Phobia Patients
Many Dentists Say This:
"Now, please relax. You'll be fine as we go along."
"Let's do sleep treatment. It costs $200-$300."
These are either too passive or too aggressive responses.
Sleep treatment is costly and can be risky
for patients with systemic diseases.
Yonsei Ona's
Step-by-Step Personalized Phobia Care
Phobia Scale Evaluation
Accurate level evaluation using empathetic questions that allow patients to answer comfortably, rather than a simple survey.
Psychological Stability Content
Psychological stability videos co-produced with mental health specialists + application of Tell-Show-Do therapy.
Medication-Assisted Treatment
Prescribing safe sedatives like Alprazolam based on evidence to alleviate anxiety.
Sleep (Sedation) Treatment
Securing safety after a systemic disease inquiry, with real-time sedation dosage adjustment using precision equipment.
Yonsei Ona's Dental Phobia Evaluation Survey
We conduct a 5-question evaluation before treatment
to precisely identify the patient's anxiety level.
Treatment methods are adjusted based on individual psychological status.
Tell-Show-Do Therapy
Anxiety doesn't disappear just with words.
We let you see, touch, and experience instruments step-by-step.
Tell
Explain
Show
Show
Do
Experience
Dedicated Spaces for Comfortable Treatment
Tension-Relieving Surgery Waiting Room
A dedicated waiting space where you can compose yourself in a comfortable environment.
Dedicated Recovery Room
An independent recovery space where you can rest comfortably after sleep anesthesia.
What is Conscious Sedation?
It is a treatment method where you receive the procedure in a slightly drowsy state and won't remember most of what happened during it.
It is safe because you relax comfortably while remaining conscious, allowing you to express your state and respond during treatment.
Safety
Procedure performed while maintaining consciousness
Specialists monitor blood pressure, pulse, and oxygen saturation
Use of globally recognized medications
Significantly lower risk of sequelae/side effects as it's not general anesthesia
Reversal agents available to wake up at any time
Comfort
Sedation therapy possible with a simple injection
Only a comfortable feeling remains after the procedure
Confidence in dental treatment with only calm and stable memories
Simple procedure with low cost burden
Yonsei Ona's
Sedation System
Direct Specialist Care
Performed directly by dentists experienced in anesthesia
Systematic Pre-consultation
Thorough checks of systemic diseases, medications, respiratory health, etc.
Safe Medication Use
Medications meeting international standards, with fast recovery and fewer side effects
Continuous Monitoring
Safety management through real-time measurement of oxygen saturation, heart rate, etc.
Post-treatment Recovery Care
Safe return home after sufficient rest in a stable recovery room
Yonsei Ona's Infusion Method
General Clinic (Bolus Method)
Injecting drugs all at once, making it difficult to control sedation depth and potentially causing issues.
Yonsei Ona (Infusion Method)
KALS-certified doctors monitor anesthesia depth and adjust dosage in real-time.
What is KALS?
Korean Advanced Life Support
A Korean advanced life support certification from the Korean Association of Cardiopulmonary Resuscitation, which is specialized emergency training only available to doctors and dentists.
Safe sleep anesthesia with expensive, infusion-specific equipment.
"For those afraid of the dentist,"
Feel understood at Yonsei Ona,
and overcome it at your own pace.
SPECIALIZED TREATMENT
Extraction? It's too early.
Natural Teeth to the End
We maximize natural tooth preservation
through precision diagnosis and specialized treatment.
Yonsei Ona's Natural Tooth Preservation System
Precision diagnosis of hidden issues with Q-ray
Complete sterilization within root canals with RF Plasma
Optimal treatment decisions through 5-Specialist Collaboration
Specialized Treatments for Natural Tooth Preservation
Root Canal & Re-Root Canal
Reducing recurrence rates by completely sterilizing root canal bacteria three-dimensionally with the RF plasma system.
Pulp Regeneration (Regenerative Endodontics)
A pediatric root canal treatment that revitalizes nerves in permanent teeth that have stopped growing, allowing roots to continue developing.
Dental Trauma Management
Precisely diagnosing and rapidly responding to dental trauma through collaboration among 5 specialists.
Apicoectomy
A treatment that maximizes natural tooth preservation by removing only the inflammation at the root tip instead of extraction.
Dental Autotransplantation
An advanced treatment that saves natural teeth by extracting a tooth, removing the source of inflammation, and replanting it.
"Saving natural teeth is
the mission of a dentist."
We do our best to save even one more tooth.
COMPARISON
How Yonsei Ona
is Different
Results and prognosis can vary for
the same cavity or root canal treatment.
Comparison Items
General Clinic
Yonsei Ona
Diagnosis Method
Visual + X-ray
Q-ray + CBCT + Microbial Test
Root Canal Sterilization
Mechanical + Chemical
+ RF Plasma Sterilization
Prosthetic Fabrication
External Lab (5-7 days)
In-house Lab (Same-day possible)
Treatment Philosophy
Efficiency-focused
Natural tooth preservation-focused
Collaboration System
Single Doctor
5-Specialist Collaboration
Unique Differentiation of Yonsei Ona
Precision Diagnosis System
Using Q-ray to detect early cavities and cracks
not visible to the naked eye.
RF Plasma Sterilization
Reducing recurrence rates with 3D complete sterilization
of fine canals that files cannot reach.
5-Specialist Collaboration
Even for complex cases, specialists from each field
decide on the optimal treatment direction together.
Results and prognosis vary depending on where
you receive cavity and root canal treatment.
5 Yonsei-Trained Specialists
Yonsei Ona Dental
Expert Medical Team
Dr. Yuseong Kim
Chief DirectorCurrent) Yonsei University Clinical Professor
Board-Certified Prosthodontist (MOHW)
Board-Certified Integrated Dentistry Specialist (MOHW)
- Chief Director, Yonsei Ona Dental Hospital
- Yonsei University College of Dentistry Graduate
- Yonsei University Dental Hospital Clinical Practice
- Yonsei University Dental Hospital Intern
- Ajou University Dental Hospital Resident
- Master's Degree in Periodontal Implant Prosthodontics, Ajou University
- Certified Prosthodontist (Ministry of Health and Welfare)
- Taiwan Bio Tech Consulting Physician
- Implant Placement Patent No. 10-2537546
- Dental Stapler Patent Pending
- Advanced Cardiac Life Support (ACLS) Provider
- CPR Certification
- Korean Academy of Prosthodontics Digital Master Course
- UCLA Dental Hospital Externship
- TMJ Therapy Certification
- TMJ Disorder Training Completed
- TMJ Disorder Education & Research Association Member
- Korean Academy of Prosthodontics Member
- Korean Academy of Oral and Maxillofacial Implantology Member
- Korean Academy of Esthetic Dentistry Member
- Korean Academy of Conservative Dentistry Member
- Former) Vice Director, Boryeong Hana Plant
- Former) Vice Director, Ace Dental
- Former) Vice Director, Ansan Yonsei Dental
Dr. Jinhyung Kim
DirectorCurrent) Yonsei University Clinical Professor
Board-Certified Integrated Dentistry Specialist (MOHW)
- Director, Yonsei Ona Dental Hospital
- Yonsei University College of Dentistry Graduate
- Yonsei University Dental Hospital Clinical Practice
- Taiwan Bio Tech Consulting Physician
- Korean Public Health Dentists Association Representative
- TMJ Therapy Certification
- TMJ Disorder Training Completed
- TMJ Disorder Education & Research Association Member
- Korean Academy of Prosthodontics Member
- Korean Academy of Oral and Maxillofacial Implantology Member
- Korean Academy of Esthetic Dentistry Member
- Korean Academy of Conservative Dentistry Member
- U-Penn Endo Course Completed
- Osstem Master Course Completed
- Former) KDCA Oral Examiner
- Former) Dental Director, Dongbu Detention Center Medical Department
- Former) Vice Director, Smile365
- Former) Vice Director, Kim's Plant
Dr. Taewon Kim
DirectorBoard-Certified Integrated Dentistry Specialist (MOHW)
- Yonsei University College of Dentistry Graduate
- Yonsei University Dental Hospital Clinical Practice
- Cre'ad Endo Course Completed
- Osstem AIC Implant Course Completed
- TMJ Disorder Training Completed
- TMJ Disorder Education & Research Association Member
- Korean Academy of Integrated Dentistry Member
- Korean Academy of Esthetic Dentistry Member
- Former) Director, Su Dental Prosthodontics
- Former) Vice Director, Jungang Dental Clinic
- Former) Chief Director, Gwanggyo 365 Lium Dental Hospital
Dr. Taewook Kim
DentistMaster's Degree in Dentistry, Seoul National University
- Seoul National University Graduate School of Dentistry Graduate
- Seoul National University Dental Hospital Comprehensive Care Unit
- TMJ Therapy Certification
- National Health Insurance Corporation Certified Oral Examiner
- U-Penn Endodontics Course
- Osstem AIC Implant Master Course Completed
- Dentis CTS Implant Gold Course Completed
- ATC Esthetic Prosthetics Research Association Member
- American Heart Association BLS Provider
- Former) Vice Director, Seoul Kunst Dental Clinic
Dr. Seungmin Ryu
Orthodontics DirectorBoard-Certified Orthodontist (MOHW)
Yonsei University College of Dentistry (Graduated with Honors)
- Yonsei University Dental Hospital Intern / Orthodontics Resident
- Korean Association of Orthodontists Certified & Member
- Yonsei University Orthodontics Research Association Member
- Yonsei University Graduate School Combined Master's & PhD Program (Orthodontics)
- UCSF & UOP Orthodontics Exchange Program
- World Federation of Orthodontists (WFO) Fellowship
- American Association of Orthodontists (AAO) Member
- Invisalign Certification
- Korean Dental Association Award - Yonsei University
- KAO Residency Academic Conference Excellence Award
- Taiwan International Orthodontics Representative (Korea)
- TAO & APOS International Orthodontics Excellence Award
- Yonsei University Orthodontics Department Outstanding Resident Award
Consulting Physician
Dr. Youngjin Choi
Consulting PhysicianCurrent) Professor of Oral & Maxillofacial Surgery, Chung-Ang University Gwangmyeong Hospital
Current) Clinical Professor, Seoul Asan Medical Center
- Master's Degree in Dentistry, University of Ulsan
- Wonkwang University College of Dentistry Graduate
- Seoul National University Dental Hospital Intern
- Seoul Asan Medical Center Oral & Maxillofacial Surgery Resident
- Board-Certified Oral & Maxillofacial Surgeon (MOHW)
- Board-Certified Integrated Dentistry Specialist (MOHW)
- Korean Association of Maxillofacial Plastic & Reconstructive Surgery Certified
- Korean Association of Oral and Maxillofacial Surgeons Member
- Korean Society of Orthognathic Surgery Associate Member
- SCI Paper Co-First Author (J Craniomaxillofac Surgery)
- Former) Dental Director, Cheongyang Public Health Center
Why Yonsei Ona Dental
Is the Best Choice
University Hospital
Level Care
Two Yonsei University Clinical Professors
and top specialists provide collaborative care
with cutting-edge technology
Official Partner of
Major University Hospitals
Post-treatment follow-up care from university hospitals,
sharing clinical cases and close collaboration
Seoul National University Bundang Hospital
Yonsei Severance Hospital
Ajou University Hospital
Chung-Ang University Hospital
Dankook University Hospital
Active Academic Research
We collaborate with university professors, mentor residents,
and stay updated on the latest clinical data and research
Student Clinical Mentoring (Dr. Yuseong Kim)
Student Clinical Mentoring (Dr. Jinhyung Kim)
89th Korean Academy of Prosthodontics Conference Presentation
Extensive Clinical Experience
We continuously accumulate far more clinical experience than typical neighborhood dental clinics.
Latest Research Updates
We stay connected with university professors and mentor residents to keep up with the latest clinical data and research trends.
Implant Placement Patent Filed
We are dedicated to implant research.
Constantly striving for better treatments.
Dental Stapler Patent Pending
A Dentist's Guide to
Truly Safe Dental Treatment
Published for public oral health education
Spreading accurate dental knowledge
“We hope patients can receive treatment
with peace of mind, armed with proper knowledge
and free from fear of dental care”
- Dr. Yuseong Kim, Chief Director
365-Day Service
Evening Hours Available
Made possible by our large team and facility
Weekdays
Evening Hours
Weekends/Holidays
Regular Hours
Even during evenings and weekends,
our care is provided directly by
our Chief Directors themselves
Our Building
Yonsei Ona Dental Hospital
Sol Square Building, 2nd Floor
Sol Square Bldg. 2F, Guseong-dong, Giheung-gu, Yongin, Korea
5-min walk from Guseong Station Exit 2 (Suin-Bundang Line, GTX-A)
How to Find Us
Sol Square 2F, Guseong-dong, Giheung-gu, Yongin, Gyeonggi, Korea
Across from Daiso Yongin Guseong Store
From Guseong Station: Turn left → Pass Daiso → Turn right
From Emart Traders: Go straight 1km
From Suji IC: Exit towards Guseong → Go straight 1.5km
Convenient Parking Available
Sol Square Underground Parking (B1-B5)
※ Vehicle registration required at front desk
B2 and B4 have no elevator access. (B1, B3, B5 recommended)
Yonsei Ona Dental prioritizes your convenience.
From comfortable parking to pleasant treatment spaces,
we are building a patient-centered dental clinic.
Office Hours
Contact us using your preferred method
Frequently Asked Questions
Another clinic said I need extraction. Can you save it?
Yes, there's a good chance. Yonsei Ona Dental performs thorough diagnosis with precision diagnostic equipment. We can find ways to save teeth that weren't visible at regular clinics. Saving natural teeth is our mission. We'll provide the best solution after precise diagnosis.
Is root canal treatment painful?
Our state-of-the-art pain-minimizing anesthesia system minimizes pain. For anxious patients, conscious sedation is available for comfortable treatment. Precise treatment minimizes recurrence and side effects, and we provide continuous post-treatment care.
How long does cavity treatment take?
Early cavities are quickly completed with resin treatment, and larger cavities can be quickly treated with our inlay system. If root canal treatment is needed, 2-3 visits are required, but precise treatment minimizes the number of visits. Exact duration will be provided based on your oral condition.
Is cavity treatment covered by insurance?
Yes, most cavity treatments are covered by health insurance. Resin treatment, root canal treatment, and crowns can receive insurance benefits, while inlays/onlays may require some out-of-pocket payment. We'll provide detailed information about costs and insurance coverage during your initial visit.