Centers & Services

Department of Oral and Maxillofacial Surgery (Biopathology)

What is oral and maxillofacial surgery?

We provide diagnosis and treatment for various diseases except of dental cavity and periodontitis in the oral and maxillofacial region.

Our Staff

Director, Department of Oral and Maxillofacial Surgery (Biopathology)

Akira Sasaki, Professor
[Oral and maxillofacial surgery]

Staff

Tsuyoshi Shimo Associate Professor [Oral and maxillofacial surgery]
Akiyoshi Nishiyama Lecturer [Oral and maxillofacial surgery]
Takuji Kimura Lecturer [Oral and maxillofacial surgery]
Koji Kishimoto Assistant Professor [Oral and maxillofacial surgery]
Yosuke Yamada Assistant Professor [Oral and maxillofacial surgery]
Norie Yoshioka Assistant Professor [Oral and maxillofacial surgery]
Soichiro Ibaragi Assistant Professor [Oral and maxillofacial surgery]
Tatsuo Okui Assistant Professor [Oral and maxillofacial surgery]

*Specialty shown in [ ]

Outpatient physicians, Clinical sections available by day of the week

  Monday Tuesday Wednesday Thursday Friday
AM Return visit by appointment First visit
Akiyoshi Nishiyama
(Lecturer )
Koji Kishimoto
(Assistant Professor)
Return visit by appointment
Return visit by appointment First visit
Akira Sasaki
(Professor)
Return visit by appointment
First visit
Tsuyoshi Shimo
(Associate Professor)
(2nd and 4th week of each month)
Return visit by appointment
PM Return visit by appointment Return visit by appointment Subspecialty out patient clinic (oral and maxillofacial implant) (xerostomia) Return visit by appointment Return visit by appointment Subspecialty out patient clinic (oral mucosal disease, oral tumor) (jaw deformity) Return visit by appointment

Treatment system

Our staffs specializing in the oral and maxillofacial surgery provide treatment for many kinds of diseases. Several teams provide interdisciplinary treatment for outpatients and inpatients. The first visit is available on Tuesday and Thursday morning in every week and Friday morning in the second and fourth weeks. At the first visit, doctors specializing in the treatment required for each patient are assigned to the care followed by several examinations. Patients with referral documents from primary care physician are also received at any time on weekday except Saturday.

Treatment policy

Our department receives many first visit patients referred from local medical institutions. We endeavor to provide an advanced medical service to each patient as a medical department specialized in oral and maxillofacial surgery with a transparent explanation and with the close hospital and clinic cooperation. We also promote the introduction of clinical pathways supporting the uniformity and facilitating medical care.

Specialties

  • Oral mucosal disease and oral tumor
    We provide diagnosis and treatment for oral mucosal lesions, precancerous lesions, odontogenic tumor, and oral cancer. We produce a treatment policy in consideration of tumor characteristics with the aim of improving treatment outcomes through multidisciplinary treatment. Speech disorder, masticatory disturbance, dysphagia and aesthetic problems after the initial treatment are treated by reconstructive surgery, maxillofacial prosthesis, and therapy for dysphagia in close collaboration with other departments and supporting team.
  • Superselective intra-arterial infusion chemoradiotherapy for oral cancer
    We aim at maximum organ preservation and minimum resection through a combination of radiotherapy and special chemotherapy. Anticancer drugs are injected super-selectively into targeted cancer through a catheter, which is inserted to a feeding artery directly from the temporal artery.
  • Jaw deformity (abnormalities of the jaw resulting in malocculsion)
    We perform surgical correction in collaboration with the department of orthodontics in our hospital and practicing orthodontics. Our department has one of the largest operation volume among western Japan. Severe jaw deformity is treated by distraction osteogenesis, which is a method of gradual extension of the jaw.
  • Oral and maxillofacial implants
    Implantation combined with bone regeneration by bone graft and bone extension is performed for difficult cases such as severe bone defects or jaw atrophy.

Scope of Target diseases

  • Surgical treatment of teeth and periodontal tissues (oral mucosa and alveolar bone): extraction of tooth with higher difficulty, extraction of tooth in medically compromised patients, pre-prosthetic surgery, fenestration and extrusion of delayed eruption.
  • Inflammation: severe infection in the oral and maxillofacial region.
  • Oral tumor: benign and malignant tumors (oral cancer) in the oral region.
  • Jaw deformity: abnormalities of the jaw resulting in malocclusion.
  • Cyst: cysts in the jaw and the oral soft tissues.
  • Trauma: bone fracture of the jaw, dental injury, oral soft tissue injury and facial soft tissue injury.
  • Salivary gland disease: sialolithiasis, mucocele, and salivary gland tumor.
  • Dental implant: difficult cases with atrophy of jaw and maxillofacial prosthesis with dental implant.
  • Oral mucosal disease and xerostomia (dry mouth): leukoplakia, lichen planus, intractable stomatitis.
  • Temporomandibular joint diseases: temporomandibular joint dislocation and temporomandibular joint disorder.
  • Drug-induced (such as therapeutic drugs for osteoporosis) osteonecrosis of the jaw and oral disease.

For outpatient visits

The outpatient clinic is open during 8:30am ? 17:00pm from Monday to Friday.
For first visit, patients need to check in at the reception desk before 11:00am on Tuesday, Thursday, and the second and fourth Friday of each month. Revisiting patients are fundamentally arranged by appointment only, although some patients could also be received without appointment.

Highly advanced/special medical treatments

Services covered by health insurance programs

  • Bone extension ( For a severe jaw deformity, morphological abnormality of the jaw is improved by gradual extension of the bone with implanted device.)
  • Life-sized three-dimensional (3D) model (For tumor in the jaw or jaw deformity, the maxillofacial morphology is visualized 3D imaging based on CT data to prepare a 3D model, which is useful for the planning of the treatment and the simulation of surgical procedures.)
  • Implant-assisted denture (For the bone defects after trauma or oral tumor surgery, in the case of difficult to restore an occlusal function using a regular denture, the function is restored with dental implant followed by bone regeneration such as bone graft.)
  • Surgical treatment for habitual temporomandibular joint dislocation.

Services performed as metical treatment at patient's own expense

  • For a severe resorption of alveolar ridge, bone regeneration such as bone graft (minimally invasive treatment is performed with combination of the artificial bone (B-TCP+hydroxyapatite)) and bone extension are conducted to restore the oral function.
  • Micro screw implant anchorage an surgical fenestration of delayed eruption in orthodontic treatment.

Main methods for testing and explanation

  • Life-sized 3D model: For tumor in the jaw or jaw deformity, the maxillofacial morphology is visualized 3D imaging based on CT data to prepare a 3D model, which is useful for the planning of the treatment and the simulation of surgical procedures.
  • Examination and diagnosis of oral mucosal disease, oral cancer.
  • Xerostomia (including germ test for Candida albicans) and taste sensitivity examination.
  • Occlusal and jaw movement examination.