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Clinic Director

Dr.Hideaki Hirooka, DDS, MS

Specialist in Periodontology
Professor, Tohoku University Graduate School of Dentistry

The Sweden Dental Center was established 1996 specializing in the treatment of periodontics and implants. The Center serves the Japanese and foreign communities. The bilingual staff is familiar with the latest standards of care in Europe and North America, and provides the highest level of treatment. The office was named the Sweden Dental Center because Dr. Hirooka received his advanced training in periodontology from Gothenburg University in Sweden, having studied there from 1988 to 1993.

As the first stage of the digestive system, the oral cavity plays an essential role in the smooth functioning of the subsequent digestive processes in the stomach and intestines.

Accurate knowledge of the care and treatment of the oral tissues is necessary for protecting the dental health of ourselves and our loved ones.

After graduating from dental school, I spent ten years practicing dentistry in Japan and then another five years studying periodontology (the study of gum disease and implantology) in Sweden.

As a postgraduate student I received considerable clinical training in the Department of Periodontology at the University of Gothenburg, Sweden, which is world-renown in this field. I came to learn state-of-the-art dentistry, was able to instruct students from around the world, and engaged in basic research. I was also able to investigate the effects of government programs had on the prevention of tooth decay and other dental diseases.

I learned much about how Sweden had been successful in preventing dental disease in the population. I have used this knowledge to keep Japanese doctors updated about treatment methods and scientific approaches by giving frequent lectures.

Training in the field of periodontology emphasizes that dental caries and periodontal disease, which are the two main diseases of the oral cavity, are caused by bacterial infection. Like other diseases, although treatment is of course important, prevention is far better as it allows the individual to avoid the problem.

The advantage of prevention is that the individual avoids getting sick in the first place. Even after the disease is cured, it is still important to practice continuous preventative maintenance to keep a healthy oral environment. This also is a form of prevention.

In order to achieve this goal, it is important to increase the individuals awareness of the importance of dental health and hygiene.

Through a successful public education program, Sweden has been able to dramatically reduce the incidence of dental disease. There is no reason why Sweden's achievements cannot be realized in Japan.


1978Graduated from Kyushu Dental College
1980Director of the Hirooka Dental Clinic
1988-1991Research Fellow at the Gothenburg University Department of Periodontology
1990Study Abroad at the Department of Prosthetic Dentistry, University of Zurich
1991Clinical Staff at Gothenburg University
Graduated from Gothenburg University with a Certificate in Clinical Periodontology
1993Received the degree “Odont. Licentiate” and returned to Japan.Tom
1995Started the Hideaki Hirooka Periodontology Course
1996Opened the Sweden Dental Center
1999Lecturer, Department of Conservative Dentistry, Niigata University
2007Executive Director, Japanese Academy of Clinical Periodontology
2009Lecturer, Tokyo University of Agriculture
2010Lecturer, Graduate School of Tokyo Medical and Dental University
2012Professor, Tohoku University Graduate School of Dentistry, Department of Fixed Prosthodontics, Division of Fixed Prosthodontics

Affiliated academic society

  • European Federation of Periodontology
  • Scandinavian Society of Periodontology
  • Swedish Society of Periodontology
  • European Association for Osseointegration
  • Fellow of the Japanese Society of Periodontology
  • Board Certified Senior Member of the Japanese Society of Periodontology
  • Fellow of the Japanese Academy of Clinical Periodontology
  • Board Certified Senior Member of the Japanese Academy of Clinical Periodontology


Hirooka, H. (1993) Metronidazole in the treatment of periodontal disease. Thesis. Gothenburg University. Mentor: Prof. J. Lindhe, Prof. J. Wennstrom Opponents: L. Heijl, B. Klinge, M. Wikstrom


Sweden Dental Center
Hirooka Denatal Clinic

Hideaki Hirooka
Postal code
Hibiya-Kokusai Building 3F 2-2-3, Uchisaiwaicho, Chiyoda-ku, Tokyo, Japan
Operation hours
Monday ~ Friday 9:30〜13:00 / 14:00〜18:00
  • Kasumigaseki Station, Exit C4, on the Hibiya Line, Chiyoda Line and Marunouchi Line, 3mins walk
  • Shinbashi Station on the Ginza Line, Exit Hibiya-Guchi 5 mins walk
  • metropolitan Subway Mita line Uchisaiwai-Cho Station, Exit A6, on the Mita Line, 1 min walk
  • metropolitan Subway Asakusa line Shinbashi Station on the Asakusa Line, Exit Hibiya-Guchi,  5 mins walk
  • JR Shinbashi Station, Exit Hibiya-Guchi, 5 mins walk

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Scine of the clinic