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Oral and Maxillofacial Surgery Lab
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An oral and maxillofacial surgery lab that treats diseases of the mouth, jaw, and face while preserving their function and form.
AboutAbout the lab
Protecting the function and form of the mouth.
The lab surgically treats diseases of the mouth, jaw, and face, and studies diagnostic and treatment methods for them.
Its specialties are oral cancer, dentofacial deformities, and cleft lip, jaw, and palate, and specialized clinical groups provide treatment at Hokkaido University Hospital.
For benign tumors and cysts of the jaw, the lab established the "repeated treatment method," which preserves the jawbone, and is conducting clinical research so that it becomes the standard approach at facilities nationwide.
The lab aims to develop new diagnostic and treatment methods that preserve and improve the function and form of the mouth.
Key terms
- Dentofacial deformity
- A condition in which differences in the size, shape, or position of the upper and lower jawbones cause problems with the bite or the shape of the face
- Repeated treatment method
- A method of treating tumors and cysts in the jawbone by repeating procedures such as fenestration (opening a window into the lesion), while preserving the jawbone
- Hyperbaric oxygen therapy
- A treatment in which the patient breathes oxygen inside a pressurized chamber to deliver more oxygen to the body's tissues
ResearchResearch themes
The lab conducts clinical and basic research to develop new diagnostic and treatment methods aimed at preserving or improving the function and form of the oral region. The subjects cover a wide range: oral cancer, temporomandibular disorders, dysphagia (feeding and swallowing disorders), dentofacial deformities, odontogenic tumors, cleft palate, dental implants, and artificial bone.
*Illustrative imageInvestigating genetic abnormalities in oral cancer
The lab comprehensively analyzes the genetic abnormalities involved in the development and progression of oral cancer, and conducts translational research that links these findings to the clinic, focusing on how well preoperative treatment works.
*Illustrative imageDiagnosis and treatment of oral cancer
The lab studies how oral cancer spreads into the jawbone and how to resect the jawbone, hyperbaric oxygen therapy for radiation-induced osteomyelitis of the jaw, and mandibular reconstruction using platelet-rich plasma (PRP).
*Illustrative imageDiagnosis and treatment of temporomandibular disorders
In addition to developing diagnostic and treatment methods by analyzing the components of the fluid inside the jaw joint (synovial fluid), the lab studies arthroscopic surgery and the indications for joint lavage and manipulation therapy.
*Illustrative imageRecovering swallowing function after cancer treatment
The lab studies how to restore the ability to take food into the mouth and swallow it (feeding and swallowing function) after treatment for oral cancer.
MembersFaculty
Members of the lab consist of faculty, hospital staff physicians, residents, visiting clinical dentists, graduate students, seconded physicians, registered research physicians, and administrative officers. The lab also provides clinical care as the Oral and Maxillofacial Surgery department of Hokkaido University Hospital.As of 2026
- ProfessorYoichi Ohiro
- Associate ProfessorYuichi Ashikaga
- Associate ProfessorKazuhiro Matsushita
- LecturerNoriyuki Takashi
- LecturerTamaki Sekiguchi
- LecturerWataru Kakuguchi
- Assistant ProfessorKazuyo Kuribayashi
- Assistant ProfessorTetsuya Seikai
- Assistant ProfessorRieko Yoshitatsu
- Assistant ProfessorAkiko Kirikoshi
- Assistant ProfessorYasuto Moriya
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: “US, Tanzanian medical professionals conduct dental surgery during Justified Accord )” U.S. Army SETAF-AF by Pfc. Alva Gonzalez / Public domain (cropped)
- Investigating genetic abnormalities in oral cancer: “DNA microarray chip” ErikAbner / CC BY 4.0 (cropped)
- Diagnosis and treatment of oral cancer: “Hyperbaric-oxygen-chamber-open” Hyperbaric Center of Queens / CC BY-SA 4.0 (cropped)
- Diagnosis and treatment of temporomandibular disorders: “Temporomandibular joint” Anatomist90 / CC BY-SA 3.0 (cropped)
- Recovering swallowing function after cancer treatment: “Graded soft semi-solid food” Ashashyou / CC BY-SA 3.0 (cropped)
- Related lab (Oral Diagnosis and Medicine Lab): “Dentist Examining Patient’s Teeth with Dental Mirror” Jameswasswa / CC BY-SA 4.0 (cropped)
- Related lab (Crown-Bridge and Implant Regenerative Prosthodontics Lab): “Single Unit Zirconia Anterior Dental Crown” James Roback, UticaDentalLab / CC BY-SA 4.0 (cropped)
- Related lab (Orthodontics Lab): “Dental braces” Sputnikcccp at English Wikipedia / CC BY-SA 3.0 (cropped)
- Related lab (Oral and Maxillofacial Reconstruction Lab): “Oral surgery operating room” Ptrump16 / CC BY-SA 4.0 (cropped)
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