Meet Our Orthodontists

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At Aoyama International Orthodontic Clinic, orthodontists who speak foreign languages are available for consultations and treatment.


Supervising Dentist


Orthodontic Specialist Dr. Naoya Masuoka

Orthodontic Specialist Dr. Naoya Masuoka


Languages Spoken

Japanese / English

Qualifications & Professional Affiliations

  • Doctor of Dental Science (D.D.S. , Ph.D. in Dentistry):Aichi Gakuin University, 2005
  • Certified Instructor, Japanese Orthodontic Society
  • Certified Orthodontist, Japanese Orthodontic Society
  • Invisalign Red Diamond Provider for 4 Consecutive Years (Over 7,500 Total Cases Treated)

Message to Patients

"A Place Where You Can Receive World-Class Japanese Orthodontic Care with Confidence"

That is the founding philosophy of our clinic.
As a Doctor of Dental Science, I have earned the titles of Certified Specialist and Clinical Instructor from the Japanese Orthodontic Society—one of the most prestigious orthodontic organizations in Japan.
At Aoyama International Orthodontic Clinic, I serve as Supervising Dentist and Orthodontist, overseeing clinical quality and treatment protocols, while also directly providing care to patients.
Beyond my clinical responsibilities, I am actively engaged in academic activities including international lectures and collaborative research on orthodontics with the University of Washington in the United States, contributing to the advancement of our field on a global scale.

Why This Clinic Was Founded

Until now, there have been very few clinics in Japan that offer all of the following: advanced orthodontic expertise, multilingual support, and the kind of warm, detail-oriented hospitality unique to Japan.
To address this need, we welcomed Dr. Wang as our Clinic Director and established Aoyama International Orthodontic Clinic—Japan’s first truly international orthodontic practice in every sense of the word.
Dr. Wang is not only an exceptionally skilled clinician, but also a warm and compassionate professional fluent in English, Chinese, and Japanese. She provides care with deep cultural sensitivity and a personal touch, making every patient feel understood and at ease.
Whether you are a child or an adult, whether you are seeking treatment with traditional braces or clear aligners, if you are looking for orthodontic care in Japan that is both trustworthy and of the highest quality, we invite you to visit Aoyama International Orthodontic Clinic.
We are here for you.

Treatment Offered

  • Clear Aligner Therapy (Invisalign)


Clinic Director / Orthodontist


Clinic Director / Orthodontist Dr.WANG JIAXI

Clinic Director / Orthodontist Dr.WANG JIAXI


Languages Spoken

English / Chinese / Japanese

Career

  • Hometown / Origin:Dongguan City, Guangdong Province, China
  • Education:2018 Graduated, Nihon University School of Dentistry at Matsudo (DDS)

Career History

  • 2019 General Residency, Tokyo Dental College Chiba Dental Center
  • 2020 Orthodontist, Dental Clinic attached to the Japanese Orthodontic Research Institute (Tokyo)
  • 2020 – 2025 Orthodontist, M & Associates Orthodontic Clinic
  • 2021 – 2023 Orthodontist (lingual‑braces specialty), Nihonbashi Hayashi Orthodontic Clinic (Tokyo)
  • 2025 Founded Aoyama International Orthodontic Clinic

Qualifications & Professional Affiliations

  • 2024 University of Washington Orthodontic Residency
  • 2025 European Aligner Society 6 Congress Rhodes
  • 2025 Asia-Pacific Invisalign Summit Bangkok
  • Member, Japanese Orthodontic Society

Message to Patients

Japan’s healthcare system is renowned worldwide for its stringent safety standards, advanced technology, and meticulous management. As a specialist orthodontic clinic based in Japan, we uphold these highest standards of medical care, combining cutting-edge diagnostic technologies with a meticulous and ethical approach to treatment. All care is provided under the supervision of experienced specialists, ensuring that every procedure is performed with sound judgement and close attention to detail.

At our orthodontic clinic, we are firmly committed to a patient-centred approach, providing safe, professional, and compassionate care to every individual who walks through our doors. We strive to deliver orthodontic treatment of the highest standard. We understand that orthodontics is not only about achieving a well-aligned and aesthetically pleasing smile, but also about maintaining oral health and improving overall quality of life.

We recognise that each patient has unique needs and backgrounds, and we place great importance on listening carefully and communicating openly in order to develop the most suitable treatment plan for each person.

We warmly welcome patients from overseas. Receiving medical care in a foreign country can often involve linguistic and cultural barriers, along with understandable anxiety. That is why we offer support in both English and Chinese, striving to create a warm, welcoming, and easy-to-understand environment. Our team is committed to providing respectful, patient-centred care where all concerns are addressed with sincerity and compassion.

It is our sincere hope that every patient who visits us will have a treatment experience that exceeds expectations. Whether you are considering orthodontics for the first time or seeking a second opinion, we are here to support you with genuine care and high-quality treatment — helping you on your journey to a healthier, more confident smile.

If you have any questions, please don’t hesitate to contact us. We look forward to welcoming you to our clinic.

Treatment Offered

  • Clear Aligner Therapy (Invisalign)
  • Fixed Appliance Therapy (conventional wire braces)

Official Social Media

Xiaohongshu (RED): ID 6794637262



Contact Us!

Would you like a free orthodontic consultation?

At Aoyama International Orthodontic Clinic, we offer free consultations (up to 60 minutes) to discuss your orthodontic treatment.

Book Your Free Consultation