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Tokushinkai Medical Corporation Group
Kasuga Dental Clinic

Tokushinkai Medical Corporation Group
Kasuga Dental Clinic

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mouthpiece orthodontic
(Invisalign)
Comfortably and beautifully aligned teeth

Invisalign is a transparent, inconspicuous, and removable mouthpiece-type orthodontic device that is comfortable and stress-free, without compromising the aesthetics of your mouth even during treatment.

REASON Kasuga Dental Clinic

Image of a large group with 30 clinics in Japan, treating 70 people annually
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30 clinics nationwide,
Treating 70 people annually
Large Groups

Our clinic is part of the Tokushinkai Medical Corporation Group, a large dental medical group with 30 clinics across Japan that treats approximately 70 patients annually. This allows us to provide treatment from dentists with proven track records in various fields.

Please consult us about any orthodontic treatment.
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No. 1 in number of cases in Kasuga City
Invisalign Platinum
Elite Providers

Our clinic performs approximately 100 Invisalign cases per year, making us the number one in Kasuga City. We are also certified as an "Invisalign Platinum Elite Provider." Our dentists, who have seen a wide variety of cases, use digital technology to achieve excellent results.

The clinic has a recreation facility so parents and children can come together.
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Nursery school on-site
There is a childcare service
Parents and children can attend

We have a nursery school on-site with dedicated staff. We also offer a temporary childcare service free of charge to look after children while family members are receiving treatment, so patients can come to the clinic with peace of mind.

Image of dental loans available for up to 84 installments
Number image

Up to 84 times
Dental loans available

You can pay for your treatment with cash or credit card. Dental loans can be paid in up to 84 installments, and have a fixed interest rate that is more advantageous than credit card payments, so you can reduce your financial burden.

TEETH

Teeth alignment that requires orthodontic treatment

There are many types of malocclusion (bad teeth alignment), including protruding teeth, underbites, gaps between teeth, and crooked teeth.
If you are worried about your teeth alignment, try orthodontic treatment.
You can improve your teeth to a beautiful alignment.

Image of maxillary protrusion (protruding teeth)

上顎前突(overbite)

This is a condition in which the upper teeth are tilted forward significantly. There are also cases where the upper jaw is overgrown or the lower jaw is undergrown.

Image of mandibular prognathism (underbite)

Mandibular prognathism(underbite)

This is an underbite or lantern jaw condition in which the lower teeth protrude further than the upper teeth. It is caused by overgrowth of the lower jaw or undergrowth of the upper jaw.

Images of diastema and midline diastema (gap teeth)

Gap dentition/median diastema
(gap teeth)

This is a condition in which there is a gap between the teeth. Diastasis, which is a gap between the front teeth, is particularly noticeable, so it is a type of teeth alignment that many people are concerned about.

Image of an open bite

Open bite
(open bite)

When the upper and lower teeth are biting together, the front teeth are spaced apart. This is caused by thumb sucking or tongue habits.

Image of a crossbite

Crossbite(Crossbite)

This is a condition in which the lower teeth protrude further than the upper teeth in some areas of the upper and lower dental arches. This can be caused by habits or misalignment of the jawbone.

Images of crowding (double teeth, crooked teeth)

bushy
(double teeth, crooked teeth)

This is a condition in which there are overlapping teeth, such as double teeth where the canines protrude, or crooked teeth where the entire teeth are uneven.

mouthpiece orthodontic
(Invisalign)

Images of mouthpiece orthodontics

This is a treatment method in which a transparent mouthpiece-type device is fitted into the dental arch to move the teeth, making the device unnoticeable. Since the device can be removed by yourself, you can eat and brush your teeth comfortably as usual.

Variations to suit a variety of concerns

I'm a little concerned
For those with crooked teeth

Express
Package

It's slightly wobbly
For those who are worried about their teeth alignment

Light
Package

It has a wider range of applications than lights,
For those with moderate symptoms

Moderate
Package

All tooth alignments
To worry

Comprehensive
Package

FEATURES

mouthpiece orthodontic
(Invisalign)Features

Transparent so it's not noticeable

Transparent so it's not noticeable

The device itself is transparent and thin, with a smooth surface that fits snugly to the teeth, so it looks natural and is unnoticeable even when worn.

Images of no dietary restrictions

No dietary restrictions

You can remove the device yourself before meals and eat without the device, so there are no restrictions on what you can eat and it's stress-free.

Hygienic image of easy tooth brushing and device maintenance Hygienic image of easy tooth brushing and device maintenance

Toothbrushes and appliances
Easy to care for and hygienic

The device can be removed, allowing you to thoroughly brush your teeth without it getting in the way. The device itself can also be cleaned quickly, making it hygienic.

Images of the inside of your mouth not hurting

No hurt inside the mouth

Unlike bracket devices, the surface is smooth and does not have any bumps, so even if it comes into contact with the mucous membranes inside your mouth, it rarely causes injury or mouth ulcers.

No need to worry about metal allergies

No need to worry about metal allergies

The device is made of plastic and does not contain any metal, so you can continue treatment without worrying about developing metal allergies.

Image of fewer hospital visits

Fewer hospital visits required

The devices need to be replaced approximately once every two weeks, but since you can do it yourself, you don't have to go to the dentist every time, which means you'll need to visit them less often.

FLOW

Our mouthpiece orthodontics
(Invisalign) Of
Treatment flow

01

Image of initial consultation counseling (free consultation)

First consultation counseling (free consultation)

We will check the condition of your mouth and simulate tooth movement using an intraoral scanner, then we will create and explain a treatment plan.
Your initial consultation is free, so please feel free to take advantage of it.

02

Images of data collection (examination/diagnosis)

Data collection (examination and diagnosis)

We will take intraoral photographs and X-rays to get a more accurate understanding of the condition of your mouth and face. We will make a diagnosis based on the examination results and proceed to the creation of the device.

03

Image of wearing a mouthpiece

Mouthpiece installation

It takes about two weeks for the appliances to be completed. Once they arrive, you will wear them for at least 20 hours each day, changing them for new appliances every two weeks or so to gradually move your teeth.

04

Images confirming treatment progress

Checking treatment progress

You will be required to change the device yourself, but you will need to visit the clinic at regular intervals, so we will inform you of this in advance and ask you to come in at the designated time to check on your treatment progress.

05

Images of completed orthodontic treatment and retention period

Orthodontic treatment completion/maintenance period

Once all the devices have been fitted and the teeth have been straightened, treatment is complete. After treatment, you will be fitted with a retainer to prevent the teeth from relapsing and to monitor your progress until the teeth are stable and in a good condition.

DIGITAL

Precise digital diagnosis

By introducing digital devices,
This allows for precise testing, analysis, and diagnosis.
With proper treatment,
We will guide you to results that will satisfy you.

Image of mold taken using 3D intraoral scanner (iTero)

3D intraoral scanner (iTero)
Casting by

By scanning your teeth with a small scanner, we can take precise impressions of your teeth that accurately reproduce even the smallest details, such as the grooves and bumps on your teeth.

Image of tooth movement predicted using 3D simulation software (Clincheck)

3D simulation software
(ClinCheck) tooth movement prediction

By simulating tooth movement in advance, you can see the tooth movement process and the beautiful final teeth alignment, which will increase your motivation for treatment.

PRICE

Basic charge

The cost of orthodontic treatment depends on the patient's oral health.
Although it is different,
The basic fees for everyone are as follows:
Please note that this is the minimum required.

Mild cases

660,000Yen

Moderate and severe cases

880,000Yen

Adjustment fee

7,700Yen

Data collection

55,000Yen

Retention Device

20,000~30,000Yen

*All prices include tax.
*Separate charges apply for implant anchors, CT scans, etc.

▼General treatment period and number of sessions for mouthpiece orthodontics (Invisalign)
Treatment period: 1 to 3 years, Number of treatments: 12 to 36
*The treatment period and number of sessions will vary depending on the symptoms, progress of treatment, etc. Please consider this information as a guide only and consult your dentist for details.

PAYMENT

About payment

Dental loan
Installment payments by using

Our clinic accepts dental loans from Orico Product Finance Co., Ltd. The company will advance the cost of dental treatment on behalf of the patient, and the patient will then pay the company in installments.

Choose from up to 84 payment installments
Fixed interest rates more affordable than credit card payments

Medical Expenses Deduction
Ease the burden a little

We will introduce the medical expense deduction system, which allows you to get a portion of your medical expenses back. If you claim medical expenses, you will receive a refund of income tax and local resident tax according to your income.

Large dental group
Tokushinkai

Image of our aim to be a pioneering dental care group

Aiming to
be a pioneering dental care 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 around 6. We started out as a small dental clinic like any other, with three treatment units and six staff members, but since our founding we have always continued to pursue the ideal form of patient-centered dental care.
Furthermore, from the early days of our founding, we have had doubts about the outdated, state-dependent dental industry, and have aimed to create an organization that contributes to the nation, with the aim of "creating the world's best dental care group."
As of April 45, 2025 years after its founding, the company has grown into an organization with 10 locations worldwide, employing over 102 staff members representing 10 nationalities. In Japan, it has become a large dental medical group, treating approximately 1,400 patients annually, which is equivalent to approximately 0.3% of the total number of dental patients in the country.
In the field of dental technology, we have manufacturing bases and design centers in Japan, the United States (LA and Dallas), Myanmar, and Thailand (Bangkok), and are involved in the production of dental prostheses for countries around the world.
The Tokushinkai Group will continue to develop people and organizations that will help restore confidence and vitality to Japan through the field of dental care.

DOCTOR

Medical doctor

Image introducing the director
Treatment that takes advantage of the group's strengths and a comfortable environment where families can come together
The Tokushinkai Group is a leading dental medical corporation with 30 clinics both in Japan and overseas, with approximately 70 patients visiting the hospital annually.
Our clinic has dentists from various treatment fields who can solve any dental problem our patients have, so patients of all ages can improve their oral health at our one clinic.
The facility is barrier-free, so you can visit with small children without any problems.
Furthermore, we are open 365 days a year and are able to accept patients, so please feel free to contact us with any questions you may have.

Director of Tokushinkai Medical Corporation

Yutaro Kuribayashi

ACCESS

Access

Hospital name Kasuga Dental Clinic
clinic director Yuki Yoshizawa
Address Zip code:982-0007
Kasuga City, Fukuoka Prefecture
2-55-19-1 Hoshimigaoka
Phone Number 092-595-6688
Closed Days None
Mon Tue Wed Thu Fri Sat Sun
9:00～13:00
(Registration until 12:00) 		● ● ● ● ● ● ●
14:30～19:00
(Registration until 18:00) 		● ● ● ● ● ■ ■

*Consultations are available on Saturdays and Sundays from 14:30 to 18:30.

Tokushinkai Medical Corporation Group

Kasuga Dental Clinic

KASUGA DC

Please make a reservation by phone.
Please tell us your name and symptoms.
Please be sure to bring your insurance card when you visit our clinic.

092-595-6688

Mon-Fri 9:00-13:00/14:30-19:00　
Weekends: 9:00-13:00 / 14:30-18:30

Mon-Fri 9:00-13:00/14:30-19:00 Weekends: 9:00-13:00 / 14:30-18:30

General risks and side effects of treatment

General risks and side effects associated with orthodontic treatment

  • ・The typical cost of orthodontic treatment is between 60 and 150 yen, with a typical treatment period of 2 to 3 years and 24 to 36 treatment sessions. This will vary depending on the devices used, symptoms, and progress of treatment, so please use this as a guide only and consult your dentist for details.
  • -Because we place emphasis on functionality and aesthetics, this is a private treatment that is not covered by public health insurance and is more expensive than insurance-covered treatment.
  • ・At first, you may experience discomfort or pain from the orthodontic appliances. You will usually get used to them within a few days to one to two weeks.
  • ・The treatment period varies depending on the case, but for adult orthodontics or when all permanent teeth have erupted, it generally takes 1.5 to 3 years. For pediatric orthodontics, the first stage of treatment, which is carried out during the mixed dentition period (when baby teeth and permanent teeth are mixed), may take 1 to 2 years, and the second stage, which is carried out after all permanent teeth have erupted, may take 1 to 2.5 years.
  • - Because tooth movement varies from person to person, treatment may take longer than expected.
  • - Patient cooperation is extremely important during orthodontic treatment, including how to handle devices and intermaxillary elastics, and regular visits to the clinic, and these factors will affect the results and duration of treatment.
  • During treatment, the appliances make it difficult to brush your teeth. This increases the risk of cavities and periodontal disease, so it is important to brush your teeth carefully and visit the dentist for regular maintenance. Also, as your teeth move, cavities that were previously invisible may become visible.
  • ・Moving your teeth can cause the roots to be absorbed and shortened. Also, your gums may recede.
  • In rare cases, the tooth may become fused to the bone and become immobile.
  • - In very rare cases, moving teeth can damage nerves, causing them to die.
  • During treatment, you may experience allergic reactions to metals, etc.
  • During treatment, you may experience temporomandibular joint symptoms such as clicking in the temporomandibular joint, jaw pain, and difficulty opening your mouth.
  • If problems arise, the original treatment plan may be changed.
  • We may need to adjust the shape of your teeth or fine-tune your bite.
  • - There is a risk of accidentally swallowing the orthodontic device.
  • - When removing the device, there is a possibility that microcracks may appear in the enamel or parts of the prosthesis (such as crowns) may be damaged.
  • - After the device is removed, if the retainer is not used as instructed, there is a high possibility of relapse.
  • -After the device is removed, it may be necessary to create prosthetics (such as crowns) to suit your current bite, or to redo any cavity treatment.
  • As your jaw grows and develops, your teeth and bite may change.
  • - After treatment, the alignment of your teeth and your bite may change due to the influence of your wisdom teeth.
  • - The alignment of your teeth and your bite may change due to aging or periodontal disease.
  • Once orthodontic treatment begins, it is difficult to reverse the condition.

Common risks and side effects associated with mouthpiece orthodontics (Invisalign)

  • -Because we place emphasis on functionality and aesthetics, this is a private treatment that is not covered by public health insurance and is more expensive than insurance-covered treatment.
  • - If you do not wear the braces correctly and for more than 20 hours a day, you may not achieve the desired treatment results, so proper self-management is essential.
  • -Since you can remove it yourself, it may get lost.
  • ・Depending on the symptoms, treatment with a mouthpiece-type orthodontic device (Invisalign) may not be possible.
  • Depending on the condition of your mouth, you may not achieve the results you expect from your treatment plan.
  • Drinking sugary drinks while wearing your dentures can increase your risk of developing cavities.
  • Treatment may rarely result in root resorption or gingival recession.
  • -If you have a strong habit of clenching your teeth, your back teeth may not be able to bite.
  • During treatment, it may be necessary to change to treatment using wires.
  • Depending on the condition of your mouth, you may need an auxiliary orthodontic device in addition to the mouthpiece-type orthodontic device (Invisalign).
  • After treatment is complete, you will need to wear a retainer to prevent relapse.
  • ・This is a medical device that has not yet been approved under the Pharmaceutical and Medical Device Act. In Japan, it is not subject to the Pharmaceutical and Medical Device Act and may not be covered by the relief measures for adverse drug reactions.

Regarding "Invisalign," a medical device not approved under the Pharmaceutical and Medical Device Act

  • The mouthpiece-type orthodontic device (Invisalign) offered at our clinic is a medical device that has not yet been approved under the Pharmaceutical and Medical Device Act (Pharmaceutical and Medical Device Act), but our clinic recognizes its effectiveness and has introduced it.
    • ◦Unapproved medical device
      It has not been approved under the Pharmaceuticals and Medical Devices Act (last confirmed on the Pharmaceuticals and Medical Devices Agency website on September 11, 2024).
    • ◦ Acquisition route, etc.
      Obtained from Align Technology, Inc. and Invisalign Japan Co., Ltd.
    • ◦ Information on safety in other countries
      Due to a lack of information, we are unable to state here any information regarding the safety of mouthpiece-type orthodontic devices (Invisalign) in other countries. Serious risks and side effects may be reported in the future.
    • ◦Not covered by the Pharmaceutical Adverse Reaction Relief System or the Biological Product Infection Relief System
      In the unlikely event that health damage occurs due to side effects or infections caused by viruses, etc., caused by drugs, medical devices (limited to biological products), and regenerative medicine products approved and manufactured and sold in Japan, public relief systems such as the "Drug Adverse Reaction Relief System" and the "Biological Product Infection Relief System" will apply. However, the use of unapproved drugs, medical devices, and regenerative medicine products will not be covered by relief. Furthermore, even if a drug, medical device, or regenerative medicine product is approved and manufactured and sold, as a general rule, it will not be covered by relief if it is not used in accordance with the prescribed efficacy, effects, usage, dosage, and precautions for use. In Japan, orthodontic devices are not subject to the Pharmaceutical and Medical Device Act and are therefore not covered by the Drug Adverse Reaction Relief System.
    • *No one involved with this website is responsible for the accuracy of the information in the warnings regarding advertisements for treatments using unapproved drugs and medical devices.

General risks and side effects associated with treatment using the 3D intraoral scanner (iTero)

  • ・It is a medical device approved under the Pharmaceutical and Medical Device Act (Pharmaceutical and Medical Device Act). It optically takes an impression of the oral cavity and displays it on a display for use in medical treatment and explanations to patients, and the acquired 3D data is used in the design and manufacturing of mouthpiece-type orthodontic devices (Invisalign) and prosthetic appliances.
  • - Treatment using a mouthpiece-type orthodontic device (Invisalign) performed using a 3D intraoral scanner (iTero) emphasizes functionality and aesthetics, so it is a private treatment that is not covered by public health insurance and is more expensive than insurance-covered treatment.
  • - The discomfort during impression taking is significantly reduced compared to traditional impression taking using impression material, but since the scanner is placed inside your mouth, you may experience some discomfort in rare cases.

Risks and side effects of 3D simulation (Clincheck)

  • ・It is a medical device approved under the Pharmaceutical and Medical Device Act. 3D images are used to check treatment plans for orthodontic appliance manufacturing, and to issue instructions for changes, obtain approvals, and explain the process to patients.
    • - Treatment using mouthpiece-type orthodontic devices (Invisalign) is performed using 3D simulation software (Clincheck software), and because it emphasizes functionality and aesthetics, it is a private treatment that is not covered by public health insurance and is more expensive than insured treatment.
    • - The same treatment results will not be obtained regardless of which orthodontist is in charge, and treatment will not necessarily proceed according to the simulation.
    • -This is only a simulation, so if tooth movements that are difficult to actually perform are incorporated, there is a possibility that the teeth may protrude from the bone and the gums may recede.