TSG Tokushinkai Study Group

Date: September 2026, 8

Venue: Tokushinkai Quartz Tower

This time, with Dr. Yuki Yoshizawa, director of our group's Kasuga Dental Clinic, as the instructor, we conducted a root canal treatment practical training session for resident dentists and first-year dentists from all over the country.

Root canal treatment is a procedure to save a tooth by cleaning the inside of the infected tooth root. Because the inside of the root has a very complex shape, it is considered a highly difficult treatment requiring advanced skills. Retreatment is not uncommon, and precise examination and treatment are crucial for improving the success rate.

On this day, we practiced basic techniques in a practical way, including using flexible nickel-titanium instruments, which are essential for precise treatment, to confirm and enlarge the entrance to the tooth root, and practicing root canal filling using extracted teeth.

Our group strives to strengthen its system so that we can provide high-quality treatment regardless of the area or the staff's experience level, by providing high-quality training from a young age, ensuring that dentists with solid technical skills can provide treatment under a solid equipment environment.

Date: September 2026, 7

Venue: Tokushinkai Quartz Tower

On this day, the group's dental hygienist manager served as the instructor, teaching participants about probing to accurately assess the condition of periodontal tissue, methods for taking intraoral photographs essential for reviewing treatment records and progress, and how to operate intraoral scanners used in digital dental care. Each topic was covered through a combination of lectures and practical exercises, deepening understanding from both theoretical and practical perspectives.

As the shift from "medical treatment" to "medical treatment" progresses, the role of dental hygienists who support overall health through oral maintenance is expanding. Through this type of training, our group strives to develop dental hygienists who can contribute to improving the quality of life of patients and promoting the health of the local community.

Date: September 2026, 7

Venue: Kasuga Dental Clinic

This time, we invited Dr. Yuki Yoshizawa, director of our group's Kasuga Dental Clinic, and Dr. Daiki Shirayama from the Department of Endodontics at Fukuoka Dental University, who works at the same clinic, to conduct a root canal treatment practical training session for resident dentists and first-year dentists from all over the country.

Root canal treatment is a procedure to save a tooth by cleaning the inside of the infected tooth root. Because the inside of the root has a very complex shape, it is considered a highly difficult treatment requiring advanced skills. Retreatment is not uncommon, and precise examination and treatment are crucial for improving the success rate.

Our group strives to strengthen its system so that we can provide high-quality treatment regardless of the area or the staff's experience level, by providing high-quality training from a young age, ensuring that dentists with solid technical skills can provide treatment under a solid equipment environment.

Date: September 2026, 7

Venue: Asuto Nagamachi Dental Clinic

On this day, we held a training session on MFT (Orofacial Myofunctional Therapy) for dentists, dental hygienists, and dental assistants belonging to clinics in Miyagi Prefecture. MFT is a preventative approach that addresses issues such as open mouths and malocclusion caused by underdeveloped muscles around the mouth in children by teaching them the correct use of oral muscles and supporting jaw growth. MFT not only improves tooth alignment and bite, but also affects the entire skeletal system, muscles, and brain function, bringing many benefits to growing children.

The training began by confirming the significance and importance of MFT based on actual case studies. After reviewing the diagnostic and evaluation process and key points, participants deepened their understanding from both theoretical and practical perspectives by experiencing actual training.

Our group regularly holds these training sessions in various locations to improve the knowledge and skills of our staff, thereby creating a system that can meet the diverse needs of a wide range of patients, from children to the elderly.

Date: September 2026, 7

Venue: Kasuga Dental Clinic

This time, we invited Dr. Makoto Ogawa (Director of Wakabadai Dental Clinic, part of our group) and Dr. Yuki Yoshizawa (Director of Kasuga Dental Clinic, part of our group), both certified JSOI specialists by the Japanese Society of Oral Implantology, to serve as instructors. In the morning, they lectured on points to note in implant surgery and key points for appropriate diagnosis. In the afternoon, we conducted practical training using models to simulate actual cases and aimed to acquire more practical skills.

Implant treatment is the treatment option for missing teeth that can restore the functionality and appearance of natural teeth. However, it is also a treatment that causes a lot of anxiety for patients who undergo surgery. Our group has many doctors who have been certified by academic societies for their achievements and knowledge of implant treatment, and by providing training in various locations, we have established a system where patients can receive implant treatment with peace of mind, regardless of their area.

Date: September 2026, 7

Venue: Tokushinkai Quartz Tower

This time, we invited Professor Joichiro Hayashi from the Department of Periodontology, Oral Biology and Regenerative Medicine, Meikai University School of Dentistry, to give a lecture and practical session on "alveolar ridge preservation," which protects the jawbone after tooth extraction, and "alveolar ridge augmentation," which adjusts the thickness and height of lost bone and gums.

"Alveolar ridge preservation" is a technique that minimizes bone and gum loss through treatment immediately after tooth extraction. By maintaining the shape of the extracted area using bone graft material or a special protective membrane, it is possible to avoid major bone grafting surgery during implant treatment and other procedures, enabling minimally invasive treatment that reduces the burden on the patient.
Alveolar ridge augmentation is a technique that regenerates bone and gum tissue that has already deteriorated. By restoring gum volume through tissue grafting and other methods, it makes implants and crowns look more aesthetically pleasing and healthy.
For these surgical procedures, the morning session consisted of a lecture explaining the theory, followed by hands-on practice in the afternoon.

Our group will continue to strive to provide high-quality dental care that minimizes the burden on patients and takes both aesthetics and function into consideration, through training provided by experts in each field.

Dates: July 1st and 2nd, 2026

Venue: Tokushinkai Quartz Tower

This time, Dr. Hidehide Hirata, a dentist at Aoyama Quartz Dental Clinic, served as the instructor for a two-day intensive training session that provided essential knowledge and skills for dental hygienists, whose scope of work has been expanding in recent years.

The first half of the first day covered the fundamental theories and clinical considerations of "occlusion" through lectures. In the second half, we welcomed Hiroki Ishihara, a dental technician from our group, as a guest lecturer and conducted a practical session on the fabrication of provisional restorations*1. On the second day, we conducted hands-on training on painless anesthesia, rubber dam isolation*2, and intraoral photography. The participants actively engaged in the training, asking questions and practicing skills during breaks and after the training ended, demonstrating their enthusiasm.

As the shift from "medical treatment" to "medical treatment" progresses, the role of dental hygienists who support overall health through oral maintenance is expanding. Through this type of training, our group strives to develop dental hygienists who can contribute to improving the quality of life of patients and promoting the health of the local community.

*1 A temporary crown worn until the final crown is placed, playing an important role in verifying the ideal bite and appearance.
*2 A treatment method in which the tooth to be treated is isolated from the surrounding area with a rubber sheet to prevent the entry of saliva and bacteria.

Date: September 2026, 6

Venue: Tokushinkai Quartz Tower

On this day, as the second session of the "Advanced Training" course for dentists, we had Dr. Junji Tagami, who has been a world leader in the field of restorative dentistry for many years, as our lecturer, and he gave a lecture and practical session on direct bonding.

Direct bonding is a treatment method that uses a composite material (composite resin) made of 80-90% ceramic particles hardened with resin to strongly bond to the tooth and repair lost tooth structure. This allows for highly precise cavity treatment and cosmetic dentistry while minimizing the burden on the body, such as the need to grind down teeth.

The lecture began with a review of the definition of dental caries (tooth decay), followed by an explanation of the theory of adhesive restorations. Then, during the practical session, the instructor provided detailed guidance on the techniques to each participant.

Our group will continue to hold regular training sessions taught by experts in various fields in order to provide the highest level of medical care.

Date: September 2026, 6

Venue: Kasuga Dental Clinic

On this day, Dr. Kuribayashi, a certified orthopedic specialist, served as the instructor. Participants practiced creating treatment plans using the latest digital platform that supports examination, diagnosis, treatment explanation, and information sharing within the orthodontic team. In addition to key points of diagnosis and analysis, participants deepened their understanding of how to think about creating an appropriate treatment plan with the goal in mind.

Our group will continue to strive to provide patients with high-quality medical care by providing highly specialized training in each field and introducing the latest technologies.

Date: September 2026, 5

Venue: Kasuga Dental Clinic

This day marked the first session of the "Advanced Training" course, an advanced course for dentists, and consisted of lectures and practical training on laminate veneers (a treatment method in which the surface layer of the tooth is shaved down and a thin ceramic veneer is bonded to it). Through the day's training, participants deepened their understanding of the ideal form, taking aesthetic knowledge into account, the selection of appropriate dental materials and instruments according to the patient's tooth condition, and points to note when preparing the tooth.

Laminate veneers are one of the minimally invasive treatment options we offer to patients who want to change the shape or size of their front teeth, or eliminate gaps between their front teeth. Our group strives to improve our techniques so that patients can feel confident in their own teeth and live their lives positively through high-standard aesthetic treatment.

Date: September 2026, 3

Venue: Matsumura Dental Clinic Niitsu

This time, we invited Professor Yoshitaka Takahashi from the Faculty of Dentistry at Oshu University to give a lecture and practical training session on periodontal surgery.
In the first half, we received a lecture on the diagnosis and treatment of furcation lesions (a condition in which periodontal disease progresses at the point where the roots of molars branch), and in the second half, we were taught two treatment methods, free gingival graft (FGG) and guided periodontal tissue regeneration (GTR), through hands-on practice using pig jawbones.

The practical materials used were not something we usually have the opportunity to work with, and the chance to receive direct guidance from Professor Takahashi was extremely valuable, making it a very meaningful practical session for each participant.

Our group will continue to hold regular training sessions taught by experts in various fields in order to provide the highest level of medical care.

Date: September 2026, 3

Venue: Kasuga Dental Clinic

In this training session, the first half consisted of case presentations by each resident, commentary by the instructors, and exchange of opinions among participants. In the second half, we reviewed the techniques of tooth preparation (adjusting the shape of teeth for purposes such as crown placement). By combining lectures and practical exercises, this one-day training session helped to refine both the approach to treatment and the precision of the techniques.

Our group will continue these efforts to ensure that we can provide consistently high-quality medical care regardless of the area or the career level of our staff.

Date: September 2026, 3

Venue: Wakabadai Dental Clinic

This time, we conducted a practical training session through two actual implant surgeries, with Dr. Makoto Ogawa (Director of Wakabadai Dental Clinic), a certified JSOI specialist of the Japanese Society of Oral Implantology, as our instructor. Prior to the training, all participants shared information about the treatment and held a conference to discuss how to proceed with the treatment. Then, the surgeries were performed, and finally, a summary was given. Under the supervision of the two instructors, the participating dentists were able to make progress on their own challenges through practical experience, making it a very meaningful training session.

Implant treatment is the option that can restore the functionality and appearance closest to natural teeth among all treatment methods for tooth loss. On the other hand, we understand that it is a treatment that can cause considerable anxiety for patients undergoing surgery. Our group regularly holds training sessions like this one, led by specialists, to ensure that you can receive safe implant treatment based on extensive knowledge.

Date: September 2026, 3

Venue: Minoo Dental Clinic

On this day, the group's dental hygienist manager served as the instructor for the final session of the year-long dental hygienist training program.
In the first half, we reviewed the correct use of medical instruments and key points for conducting saliva tests. In the second half, each participant presented a case study as a result of their year-long efforts, followed by a summary by the instructor.

As the shift from "medical treatment" to "medical treatment" progresses, the role of dental hygienists who support overall health through oral maintenance is expanding. Through this type of training, our group strives to develop dental hygienists who can contribute to improving the quality of life of patients and promoting the health of the local community.

Date: September 2026, 2

Venue: Kasuga Dental Clinic

This time, we gained a deeper understanding of "tooth preparation," including "abutment tooth preparation," which adjusts the shape of the original tooth in order to attach a crown.
Through classroom lectures and practical training using models, participants deepened their learning about adjustment methods to ensure that crowns are firmly attached without excessively grinding down the original teeth. They reaffirmed everything from designing cutting that does not burden the patient, to safe and appropriate shaping methods for the surrounding tissues and teeth, and how to angle the cutting surface.

While the quality of the crown is important to keep treated teeth in good condition for a long time, the underlying tooth is also extremely important. Dental treatment involves many aspects that are invisible to the patient, but our group thoroughly refines each and every technique so that patients can receive treatment with peace of mind.

Date: September 2026, 1

Venue: Matsumura Second Dental Clinic

Today we held an MFT (Oral Myofunctional Therapy) training session for dental assistants.
MFT is a preventative approach to correcting gaping mouths and misaligned teeth caused by underdeveloped muscles around the mouth by teaching children how to use their mouth muscles correctly and supporting jaw growth. MFT not only improves tooth alignment and bite, but also affects the function of the entire skeleton, muscles, and brain, bringing many benefits to children during their development.

Our group regularly conducts this type of training in various locations to improve the skills and knowledge of our staff, thereby establishing a system that allows us to meet the diverse needs of a wide range of patients, from children to the elderly.

Date: September 2025, 11

Venue: Tokushinkai Quartz Tower

This time, we invited Professor Hiromasa Yoshie, Emeritus Professor of Niigata University, to give a training session for young dental hygienists.
In the first half of the course, participants learned through lectures the theory of appropriate ultrasonic scaling based on test findings such as root shape, periodontal pocket depth, and bone resorption (the phenomenon in which the alveolar bone that supports the teeth dissolves and decreases). In the second half of the practical session, participants worked in pairs to review the procedure, with Dr. Yoshie personally demonstrating the technique using a model.

As the shift from "medical treatment" to "medical treatment" progresses, the role of dental hygienists who support overall health through oral maintenance is expanding. Through this type of training, our group strives to develop dental hygienists who can contribute to improving the quality of life of patients and promoting the health of the local community.

Date: September 2025, 11

Venue: Wakabadai Dental Clinic

This time, participants gained a deeper understanding of gum and bone grafting procedures, which are required for implant treatment depending on the patient's oral condition. After reviewing the theory in a classroom setting, participants gained practical experience through live surgery. In addition, participants gained a deeper understanding of the key points of full mouth reconstruction (retreatment of all upper and lower teeth to resolve overall oral problems) and the design of implant overdentures (a treatment in which removable dentures are fixed over implants).

Implant treatment is the treatment option for missing teeth that can restore functionality and appearance closest to that of natural teeth. However, it can also be a treatment that causes a lot of anxiety for patients undergoing surgery. Our group regularly holds training sessions like this in various locations, and has established a system that allows patients to receive implant treatment with peace of mind, regardless of their location.

Date: September 2025, 9

Venue: Tokushinkai Quartz Tower

This time, the lecturers were dental hygienist managers from across the group, and participants gained a deeper understanding of periodontal disease treatment from various angles.
The first half of the program consisted of a lecture on etiology, a case study of bacterial testing, and a review of the correct use of medical instruments. The second half included practical training on gum peeling (a treatment that uses chemicals and lasers to remove dark gums caused by melanin pigmentation due to periodontal disease or smoking, restoring healthy pink gums).

It is said that approximately 8% of adults suffer from periodontal disease, and it is also known as a "national disease." It is a terrible disease that progresses without any noticeable symptoms and affects the health of the entire body. Our dental hygienists regularly study the latest knowledge and practical skills so that each individual can perform periodontal treatment appropriately, contributing to the health of the local community.

Date: September 2025, 7

Venue: Kasuga Dental Clinic

The instructors included Dr. Kuribayashi Yuutaro, head physician of the medical department, as well as Dr. Ogawa Makoto (director of our group's Wakabadai Dental Clinic) and Dr. Yoshizawa Yuki (director of our group's Kasuga Dental Clinic), both of whom are Japanese Society of Oral Implantology certified specialists. The instructors also demonstrated techniques such as implantation and suturing, helping to improve accuracy through practical training.

Implant treatment is the treatment option for missing teeth that can restore the functionality and appearance of natural teeth. However, it is also a treatment that causes a lot of anxiety for patients who undergo surgery. Our group has many doctors who have been certified by academic societies for their achievements and knowledge of implant treatment, and by providing training in various locations, we have established a system where patients can receive implant treatment with peace of mind, regardless of their area.

Date: September 2025, 6

Venue: Tokushinkai Quartz Tower

We invited Professor Takeichiro Hayashi, professor of the Department of Periodontology, Department of Oral Bioregenerative Medical Engineering, School of Dentistry, Meikai University, as our lecturer, who gave a lecture and practical training on the treatment of gummy smiles (a condition in which the gums are significantly exposed when smiling). After that, we had a hands-on training session using a pig jawbone, where we learned surgical procedures with a feeling closer to reality than you can get from a model.

Date: September 2025, 5

Venue: Kasuga Dental Clinic

On this day, a web conferencing system was used to connect dental assistants from across the group and a training session was held to develop TCs (treatment coordinators). TCs stand between dentists and patients, providing counseling and explaining treatment. They also grasp the overall picture of treatment and act as a control tower for each profession, including dentists, dental hygienists, dental assistants, and dental receptionists. This time, the participants deepened their understanding through classroom training about what an ideal TC should be and the type of treatment and counseling that patients want.

In order to ensure that patients can receive high-quality treatment with peace of mind, our group will continue to hold training sessions like this on a regular basis and strive to develop excellent TCs who are able to fully understand patients' concerns and worries.

Date: September 2025, 3

Venue: Tokushinkai Quartz Tower

On this day, training was conducted for young dentists, who deepened their understanding of correct examination and diagnosis methods through lectures and case studies, as well as confirmed the key points of procedures that should be mastered through practical training using models.

Our group will continue to make such efforts nationwide in the future, striving to provide a consistently high standard of medical care regardless of area or staff experience.

Date: September 2025, 3

Venue: World Lab Tokyo Center

On this day, we held a case study meeting centered around dental technicians.
Our group has a dedicated dental laboratory department called "World Lab," and by working closely with the clinical staff, we are able to provide high-quality dental prosthetics.

This time, opinions, impressions and advice were given on the presented cases not only from the perspective of dental technicians but also from the perspective of dentists, and the lively discussions further strengthened mutual collaboration.

Our group will continue to make these kinds of efforts in the future, with all staff involved in medical treatment working together to provide the highest level of medical care.

Date: September 2025, 3

Venue: Kasuga Dental Clinic

We invited Ms. Ritsuko Kawasaki, who holds numerous dental hygienist certifications, to give a lecture and practical training on the theme of "Team approach to periodontal disease."

It is said that about 8% of adults suffer from periodontal disease, and it is also known as a "national disease." It is a terrible disease that progresses without any noticeable symptoms and affects the health of the entire body. In our group, in addition to approaching the oral hygiene of each patient on a team and clinic basis, as instructed today, we would like to regularly update our knowledge and skills as a group and contribute to the health of the local community.

Date: September 2025, 2

Venue: Kasuga Dental Clinic

Using a web conferencing system, we connected dental hygienists from across the country in our group and gave a lecture on key points for oral maintenance. Afterwards, each participant brought in a case study and held a discussion.

Our group strives to train dental hygienists who can support the maintenance of oral health over the long term so that patients can stay healthy forever. We will continue to strive to improve the quality of medical care through such efforts.

Date: September 2024, 12

Venue: Matsumura Dental Clinic Niitsu

The lecturers included Dr. Yuutaro Kuribayashi, head of the medical department, as well as dental hygienist managers from across the country. They gave lectures on key points for maintaining the oral cavity and cleaning using the latest equipment, as well as case presentations, deepening knowledge and understanding.

Oral health is linked to overall health and determines a healthy lifespan. Through these efforts, our group strives to train dental hygienists who can be trusted for many years by patients of all ages, from small children to the elderly, and who can confidently entrust their oral care to us.

Date: September 2024, 11

Venue: Asuto Nagamachi Dental Clinic

We held practical training and lectures on periodontal surgical treatment for medical trainees. In the practical training, we used a pig's jawbone to hone our techniques in a way that was close to real-life. Our group regularly holds such practical training so that we can provide appropriate treatment according to the shape of the patient's mouth when treating severe periodontal disease or shortening the length of teeth (gums).

Date: September 2024, 9

Venue: Esaka Dental Clinic

The lecturers were Dr. Kuribayashi Yuutaro, head physician of the medical department, and Dr. Ogawa Makoto, a JSOI-certified specialist physician (Director of Wakabadai Dental Clinic, part of our group). In addition to lectures and implant placement practice using models, the trainees were able to deepen their understanding by observing and assisting in operations on actual patients.

Implant treatment is the treatment option for missing teeth that can restore the functionality and appearance of natural teeth. However, it is also a treatment that causes a lot of anxiety for patients who undergo surgery. Our group has many doctors who have been certified by academic societies for their achievements and knowledge of implant treatment, and by providing training in various locations, we have established a system where patients can receive implant treatment with peace of mind, regardless of their area.

Date: September 2024, 8

Venue: Esaka Dental Clinic

This time, dental hygienist managers from around the country served as lecturers, and participants deepened their understanding by combining lectures and practical training on the etiology of periodontal disease and how to utilize the latest equipment in treatment.

It is said that approximately 8% of adults suffer from periodontal disease, and it is also known as a "national disease." It is a terrible disease that progresses without any noticeable symptoms and affects the health of the entire body. Our dental hygienists regularly attend training sessions like this one to review the basic theory and update their knowledge so that each individual can respond appropriately to periodontal disease, and we hope to contribute to the health of the local community.

Date: September 2024, 6

Venue: Tokushinkai Quartz Tower

We invited Professor Takeichiro Hayashi, professor of the Department of Periodontology, Department of Oral Bioregenerative Medical Engineering, School of Dentistry, Meikai University, as our lecturer, and he gave a lecture and practical training on the treatment of gummy smiles (a condition in which the gums are widely exposed when smiling). In the practical training, a pig's jawbone was used, and the students learned surgical procedures with a feeling closer to reality than they could get with a model.

Date: September 2024, 5

Venue: Esaka Dental Clinic

This was the second of a year-long training program held once a month for dentists with three or more years of experience, and participants deepened their understanding of correct diagnosis and treatment methods in endodontic therapy through a combination of lectures and practical experience.

Endodontic therapy (treatment of the tooth root) is a delicate treatment that can recur if even the slightest bacteria is left behind. It goes without saying that sufficient facilities and equipment are necessary, but the technical skills of the dentists who use them are also extremely important. We would like to improve the precision of our treatment by regularly reviewing cases and conducting practical training to hone our techniques.

Date: September 2024, 5

Venue: Tokushinkai Quartz Tower

The lecturers were Dr. Yuutaro Kuribayashi, head physician of the medical department, and dental hygienist managers from across the country. Through a combination of lectures and practical experience, participants gained a deeper understanding of correct examinations and diagnoses, how to take intraoral photographs, and how to use intraoral scanners.

In order to proceed with treatment, a highly accurate treatment plan based on a correct examination and diagnosis is essential. Our group has an educational system in place, including regular training in intraoral photography by professional photographers, to ensure a high level of support at every phase of treatment.

Date: September 2024, 5

Venue: Tokushinkai Quartz Tower

The lecturers were Dr. Kuribayashi Yuutaro, Head of Medical Department, and Dr. Ogawa Makoto, a JSOI certified specialist physician (Director of Wakabadai Dental Clinic, part of our group). The lecture covered topics such as diagnostic examinations and treatment plans for implant treatment, and consultations with patients, as well as practical training in incision, peeling, and suturing, allowing participants to gain a deeper understanding of implant treatment.

Implant treatment is the treatment option for missing teeth that can restore the functionality and appearance of natural teeth. However, it is also a treatment that causes a lot of anxiety for patients who undergo surgery. Our group has many doctors who have been certified by academic societies for their achievements and knowledge of implant treatment, and by providing training in various locations, we have established a system where patients can receive implant treatment with peace of mind, regardless of their area.

Date: September 2024, 4

Venue: Tokushinkai Quartz Tower

Through a combination of lectures and practical experience, participants deepened their understanding by learning correct treatment procedures and approaches, how to explain things to patients, and important points to note.

When proceeding with treatment, it is important to accurately grasp the condition of the oral cavity, as well as to pay attention to the patient's lifestyle and other factors, and to implement a plan that is tailored to the patient. We will endeavor to provide thorough counseling so that we can protect our patients' precious teeth as much as possible.