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Orthodontics and Dentofacial Orthopedics Lab
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An orthodontics lab that explores the growth and movement of the face and teeth through orthodontic science.

AboutAbout the lab
Developing leading professionals for orthodontic care
The lab studies the growth and development of the teeth and face, jaw movement, and related topics in the field of orthodontics.
Orthodontics is a field that seeks the factors that create the optimal natural-teeth occlusal relationship in order to achieve an attractive mouth and stable occlusal function.
Research areas in orthodontics range from the perception of facial shape and expression, to the morphogenesis of bone and teeth, the control of jaw movement, and pain control.
The lab also works to train leading professionals who can succeed in Japan and abroad and carry orthodontic care forward in the 21st century.
Key terms
- Orthodontics
- A field that guides the growth of the teeth and facial skeleton during the growth period and, after growth, changes tooth positions to bring the teeth and face into proper positional relationship.
- Occlusion
- The way the upper and lower teeth fit together.
- Morphogenesis
- The process by which the shapes of bones, teeth, and other structures are formed during growth.
ResearchResearch themes
Research in orthodontics spans many fields, including cognitive science, neuroscience, mathematical engineering, genetic engineering, and molecular biology. The lab works on the analysis of mandibular movement and smiles, automated image analysis, and the identification of factors involved in growth and development.
*Illustrative imageIndividualized mathematical models of mandibular movement
This research builds a mathematical model of mandibular movement output for each individual. It aims to represent jaw movement mathematically, tailored to each person.
*Illustrative imageThree-dimensional dynamic analysis of smiles
This research captures the movement of a smile in three dimensions and analyzes it.
*Illustrative imageAutomated analysis of head X-ray images
This research automatically analyzes X-ray images of the head.
*Illustrative imageMathematical elucidation of orthodontic knowledge and reasoning
This research mathematically clarifies the knowledge base used in orthodontics and the logical structure of the reasoning used to make decisions.
MembersFaculty
The members of the Orthodontics and Dentofacial Orthopedics Lab consist of Professors, Associate Professors, Lecturers, and Assistant Professors.As of 2026
- ProfessorTakashi Yamashiro
- Associate ProfessorHiroshi Kurosaka
- LecturerChihiro Tanikawa
- LecturerToshihiro Inubushi
- Assistant ProfessorShinsuke Itoh
- Assistant ProfessorAyaka Oka
- Assistant ProfessorYuki Shiraishi
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “J hook orthodontic device” Orthodontist101 / Public domain (cropped)
- Individualized mathematical models of mandibular movement: “Mandible lateral2” Anatomography / CC BY-SA 2.1 jp (cropped)
- Three-dimensional dynamic analysis of smiles: “Smiling girl in sunshine wearing bib overalls in Laos at golden hour” Basile Morin / CC BY-SA 4.0 (cropped)
- Automated analysis of head X-ray images: “Cephalometric radiograph” ANUG / CC BY-SA 4.0 (cropped)
- Mathematical elucidation of orthodontic knowledge and reasoning: “Headgear- reverse-pull rubber band attachment” Orthodontist101 / CC0 (cropped)
- Related lab (Oral and Maxillofacial Pathology Lab): “Stained microscope slide” Waughd / CC BY-SA 4.0 (cropped)
- Related lab (Dental Anesthesiology Lab): “Anesthesia and monitoring equipment at a veterinary clinic in Newark, New Jersey” Veterinarian Pet Alliance / CC BY 4.0 (cropped)
- Related lab (Removable Prosthodontics and Gerodontology Lab): “Making of complete denture 06” Werneuchen / Public domain (cropped)
- Related lab (Special Needs Dentistry Lab): “Child receives dental care in a clinic with a smiling dentist” Shixart1985 / CC BY 2.0 (cropped)
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