Research Scientist at the Division of Clinical Research of Nihon University School of Dentistry’s Dental Research Center and Associate Professor of the Department of Orthodontics at Nihon University School of Dentistry. He plays a leading part in clinical education in pedodontics and orthodontics as a director of the education management. He is also a clinician with a lot of experience who performed placement exceeding thousands cases of orthodontic anchor screws and skeletal anchorage plates. He is engaged in the development of system of effective orthodontics using the orthodontic anchor screw, supported by Nihon University Business, Research and Intellectual Property Center.
Graduated DDS [Nihon University] 1984
PhD 1990, in Orthodontics.
Visiting Researcher [University of Alabama at Birmingham] 1996 in Orthodontics and Radiology.
Work Experience
A member of the committee appointed to consider ethical and medical issues in the Japanese Orthodontic Society, and greatly contributed the pharmaceutical approval of the orthodontic anchor screws in Japan.
Research field
His research interests relate to the biomechanics in areas of orthodontics and dentofacial orthopedics. His research is widely cited, has received several awards, and has appeared in many leading academic journals both in the U.S.A. and in Europe, including the Clinical Oral Investigations, Clinical Oral Implants Research, International Journal of Oral & Maxillofacial Implants, International Journal of Oral & Maxillofacial Surgery, American Journal of Orthodontics & Dentofacial Orthopedics, and European Journal of Orthodontics.

Title of Talk

Clinical Considerations for Aanchor Sscrews Placed at Median Palate


Orthodontic treatment has been advanced by the use of orthodontic anchor screws. Recently, anchor screws placed at median palate have been widely used in clinic because of no risk for tooth root contact. To raise the success rate of palatal anchor screws, knowledges of anatomical features in an area of palatine bone are required. The most conspicuous organ in the palate is median palatine suture which is thought to be fixed during adolescence but this is not obvious. We then investigated bone features surrounding median palatine suture using CBCT (Ethical Permission # EP16D016) and rate of coalescence, and risk factors for failure of palatal anchor screws to improve the success rate, and found that the primary stability of screws is related to the mechanical characteristics of the interface between the screws and bone in relation to factors such as bone thickness and placement site. In this presentation, certain and safety placement techniques for improving the success rate will be discussed.
Furthermore, a couple of clinical cases will be presented using an appliance which can be mounted to the screw-head placed in the median palatine area; this device is simple and low price, and easy to distalize and depress maxillary molars.
This presentation will report outcomes of our studies regarding the risk factors to ensure successful placement, and mechanics for effective tooth movement will be also discussed using palatal orthodontic anchor screws.