TOKUSHINKAI GROUP
Matsumura Second Dental Clinic
- Open all year round
- Reception open until 19pm
- Childcare worker on-site
Japan's largest dental group
Operated by the Tokushinkai Group
A comprehensive dental clinic rooted in the local community of Nagaoka City
The world's first periodontal treatment device
Blue Radical
For teeth with severe periodontal disease, radical sterilization technology using hydrogen peroxide and laser irradiation is used to kill oral bacteria, reducing gum swelling and periodontal pockets.
Invisalign
This is an orthodontic system that gradually straightens teeth by wearing mouthpiece-type orthodontic devices for a certain amount of time every day and replacing them every two weeks. Not only are the devices removable and easy to clean, but they are also comfortable to wear and unnoticeable in appearance.
Oral dysfunction
If your child has habits such as having their mouth wide open, chewing slowly, or munching loudly while eating, they may have oral dysfunction.
MFT Program
This preventative orthodontic treatment corrects bad oral habits, strengthens the muscles around the mouth, and promotes proper tooth alignment. It also affects the function of the entire skeleton, muscles, and brain, bringing many benefits to growing children.
Preventive dentistry starting from age 0
Oral and physical health are closely linked. In fact, the development of a healthy body for your child also starts with early prevention of tooth decay. Let's find out what adults can do at the dentist to ensure the beautiful white teeth and smile of your newborn.
Oral surgery by specialists
Our clinic employs Professor Mataga, professor emeritus at Nihon University School of Dentistry, who performs difficult tooth extractions such as impacted teeth.
Implant treatment by a specialist
The implant specialists at our clinic are renowned doctors who serve as lecturers in implant training for the Tokushinkai Group, which operates 30 dental clinics in Tokyo, Niigata, Miyagi, Osaka, and Fukuoka.
INFO Announcements from the clinic
2025.12.18
Information for patients
Conventional health insurance cards cannot be used.
MESSAGE Message to patients
Matsumura Second Dental Clinic Ryuji Koike
Aiming to be a clinic that is easy for patients to visit
Our clinic opened in 2000 and aims to be a clinic that is rooted in local medical care and can provide long-term support to our patients.
When do you go to the dentist?
There are many times when you might want to do this, such as when you experience pain, when you want to remove stains, or when your dentures start to feel uncomfortable.
Problems in the mouth usually don't cause much pain, but they can progress without you realizing it.
And when the pain is obvious, it is often very difficult to cure.
The best way to treat oral problems is to find them early and treat them early. However, I cannot deny that many people have the image that going to the dentist is a painful experience.
We aim to be a clinic that can change that image, and we are continually improving our facilities, service, and treatment techniques.
Our goal is to be a dentist that people can visit with the same feeling as a beauty salon.
We aim to be a clinic where patients say they come not because they are in pain, but because they want to have a clean mouth and keep their mouth clean all the time, so that they can chew with their own teeth for the rest of their lives.
Let's think about your oral health together.
FEATURES Characteristics of Matsumura Second Dental Clinic
Childcare worker on duty.
Preventive dentistry from age 0
Providing treatment support
We have a full-time childcare worker at our clinic. We not only provide free temporary childcare during treatment so that parents who have children and find it difficult to visit the dental clinic can visit without hesitation, but also provide treatment support for children who are afraid of the dentist and provide functional improvement training for children with oral function developmental disorders.
Preventive dentistry starting from age 0
Oral muscle training to help your child achieve the correct bite
Our MTF (Mouth Muscle Training) trainers can give advice on any concerns you may have about your mouth, development, diet, etc. By training your mouth muscles in the correct way, you can achieve the ideal alignment of your teeth.
Please contact us for fluoride application.
Newly grown baby teeth have weak enamel and are more susceptible to cavities than adult teeth. At our clinic, we can apply fluoride to baby teeth that have already grown in to prevent cavities.
Treatment support for children who are afraid of the dentist
Our childcare staff will support your child to ease their anxieties about their treatment and ensure that the treatment goes smoothly.
Temporary childcare service for parents undergoing treatment
To allow parents with children who find it difficult to visit the dental clinic to come without hesitation, our clinic provides free temporary childcare services for children during treatment.
By experienced specialists
Implant treatment
The implant specialists at our clinic are renowned doctors who serve as lecturers in implant training for the Tokushinkai Group, which operates 30 dental clinics in Tokyo, Niigata, Miyagi, Osaka, and Fukuoka.
Specialist of the Japanese Society of Oral Implantology / Clinical Associate Professor of the Department of Implantology, Tokyo Medical and Dental University Tsuneji Okada (Okada Tsuneji)
Japanese Society of Oral Implantology Specialist
Director of Masaka Dental Clinic, Medical Corporation Shiseikai
Clinical Associate Professor, Department of Implantology, Tokyo Medical and Dental University
Advisor of Quartz Dental Clinic, Tokushinkai Medical Corporation
Oral surgery by specialists
Our clinic employs Dr. Mataga, a professor emeritus at Nihon University School of Dentistry. Dr. Mataga holds various instructors, specialists, and certifications in oral surgery, and he performs difficult tooth extractions, such as impacted teeth extractions, at our clinic. If you have any concerns about wisdom teeth, please feel free to contact our staff.
Japanese Society of Oral and Maxillofacial Surgeons Supervisor Izumi Mataga (Izumi Mataga)
Certified clinical training instructor
Certified doctor by the Japanese Society of Oral and Maxillofacial Surgeons
Instructor of the Japanese Society of Oral and Maxillofacial Surgeons
Japanese Society of Temporomandibular Joint Supervisor
Infection Control Doctor (ICD)
Specialist of the Japan Sjögren's Syndrome Study Group
Japanese Society of Hyperthermia Certified Doctor
Japanese Society of Oral Implantology instructor and certified doctor
Certified doctor of the Japan Society of Geriatric Dentistry
Japan Academy of Maxillofacial Implants Supervisor
Certified by the Japanese Society of Psychosomatic Dentistry
Provisional Educational Doctor (Oral and Maxillofacial Surgery) of the Japan Association of Certified Cancer Therapists
Certified doctor and instructor of the Japanese Society of Dental Care for Patients
Certified psychosomatic dentist by the Japanese Society of Psychosomatic Dentistry
Council member of the Japanese Society for Oral and Maxillofacial Trauma Research Group and the Japanese Society for Maxillofacial Trauma
Director of the Japanese Society of Dentistry for Patients with Medical Conditions
Director of the Japanese Academy of Maxillofacial Implants
Councilor of the Japan Oral Care Society
Vice Chairman, Editorial Committee of the Japanese Society of Oral Implantology
International Society of Oral and Maxillofacial Surgery Specialist Examination Committee Member
OUR TEAM Working as a team to meet the needs of our patients!
A nursery teacher
Resident
Under treatment
Temporary child care service
We offer a temporary childcare service where childcare workers will look after your children free of charge during treatment.
For patients with children
Our group has put in place a system that allows patients with children to visit our hospital with peace of mind, including temporary child care services, kids' spaces, and private rooms for children.
driver
Resident
To the clinic
Free shuttle service
We provide a free shuttle service to the clinic for those who do not have their own transportation.
Staff is always on-site, from management to transportation.
Our group has a specialized management team that strives to provide better medical care by thoroughly addressing the concerns of patients and clinics.
Dedicated dental laboratory department available
The latest equipment and experienced technicians
Producing high-quality crafts
By having dentists and dental technicians work together, we can provide patients with the best possible dental prosthesis.
Dental laboratory department "World Lab"
Our group's dedicated dental laboratory department, World Lab, has bases in Niigata, Sendai, Tokyo, Osaka, and the United States, and works closely with clinics across the country.
Founded 44 years ago with "team medical care" About the Tokushinkai Medical Corporation Group
The Tokushinkai Group began in 1981 in the former Niitsu City, Niigata Prefecture (now Akiha Ward, Niigata City), a small rural town with a population of about 6.
We started out as a typical small dental clinic with three treatment units and six staff members, but since our founding we have always strived to provide patient-centered dental care.
Furthermore, ever since our founding, we have had doubts about the outdated dental industry, and with the aim of "creating the world's best dental group," we have sought to break away from an industry dependent on the state and instead build an organization that contributes to the nation.
As of September 45, 2025 years after our founding, we have grown into an organization with 12 locations around the world, employing over 98 staff members representing 10 nationalities.
Within Japan, we are one of the largest dental medical groups, treating approximately 0.3 patients per year, which is equivalent to approximately 70% of the total number of dental patients in the nation.
Additionally, in the field of dental technology, we have manufacturing bases and design centers in Japan, the United States (LA, Dallas), Myanmar, and Thailand (Bangkok), and are involved in the manufacture of dental prostheses for countries all over the world.
The Tokushinkai Group will continue to develop people and organizations that will help bring back confidence and vitality to Japan through the field of dentistry.
MORE We are also taking steps like this!
RELATED Related facilities
Payment methods for medical expenses
Payment methods for insurance medical treatment
We ask that you pay for insurance treatment in cash.
Payment methods for private medical treatment
In addition to cash payments, we also accept credit card payments and dental loans.
Credit Card
We accept various credit cards. Payment methods vary depending on the treatment content and duration, so please ask our staff for details.
- One-time payment
- In-hospital installment payment (no installment fee)
Dental Loan
You can use a dental loan from Orico Product Finance. Orico Product Finance pays dental treatment fees on your behalf, and you pay the amount in installments to Orico Product Finance.
- Choose from up to 84 payment installments
- Fixed interest rates more affordable than credit card payments
What you don't know will cost you money? Medical Expense Deductions
Annual medical expenses are fixed
If it exceeds that, you will not receive a refund.
Available
If your medical expenses exceed a certain amount per year (basically 10 yen), you can receive a refund by declaring it when filing your tax return. This also applies when income tax payers pay medical expenses for themselves or family members who share the same household. These medical expenses are defined as "examination or treatment" by a "doctor or dentist," and include "dental treatment expenses."
*For those with an income of less than 200 million yen, 5% of the income
Treatment and expenses eligible for medical expense deduction
- Treatment of tooth decay
- Tooth extraction
- Periodontal disease treatment
- Dental caps and dentures
- イ ン プ ラ ン ト
- Medical expenses
- The deduction also applies if you take out a dental loan.
Treatment not covered by the deductible
- Removal of plaque and tartar
- Cosmetic and aesthetic treatments
- Gasoline and parking fees if you go to the hospital by car