OKAYAMA UNIVERSITY HOSPITAL

Message from the Director of the Department

Scope of Target Diseases

• Oral cancer: malignant tumors in the oral region
• Oral tumor: benign tumors in the oral region
• Jaw deformity: abnormalities of the jaw resulting in malocclusion
• Cleft Lip and Palate: A congenital condition characterized by a cleft involving the lip, palate, and/or maxilla.
• Temporomandibular joint diseases(TMJ): TMJ disorder, dislocation and ankylosis
• Trauma: bone fracture of the jaw, oral soft tissue injury and facial soft tissue injury
• Cyst: cysts in the jaw and oral soft tissues
• Salivary gland disease: sialolithiasis, mucocele, and salivary gland tumor
• Oral mucosal disease: leukoplakia, lichen planus, and intractable stomatitis
• Inflammation: severe infection in the oral and maxillofacial region

Features and Description of Medical Care

• Oral cancer
  We provide diagnosis and treatment for patients with oral cancer, aiming to improve treatment outcomes through a multidisciplinary approach.
  For functional impairments involving speech, mastication, and swallowing, as well as aesthetic concerns following treatment, we collaborate with other clinical departments to provide reconstructive surgery, maxillofacial prosthetic rehabilitation, and swallowing rehabilitation.
  Our department is accredited as a training institution under the Board Certification System for Oral Cancer Specialists of the Japanese Society of Oral Oncology.
• Jaw Reconstruction and Occlusal Rehabilitation
  Using advanced digital surgical planning systems, we perform precise tumor resection and jaw reconstruction in accordance with detailed preoperative simulations. Dental implants are then placed immediately into the reconstructed jawbone. This approach enables us to complete tumor resection, jaw reconstruction, and the preparatory steps for occlusal rehabilitation within a single surgical session.
• Dentofacial Deformities
  We perform orthognathic surgery in close collaboration with orthodontists and have one of the highest annual surgical case volumes in western Japan. For patients with severe jaw deformities, we also provide advanced surgical treatments incorporating distraction osteogenesis.
  Our department is accredited as a training institution under the certification system for oral and maxillofacial surgeons of the Japanese Society for Jaw Deformities.
• Cleft Lip and Palate
  We provide comprehensive treatment for patients with cleft lip and palate, including prenatal consultations and interventions beginning in the neonatal period. We have extensive clinical experience in treating patients with complex congenital anomalies and genetic disorders. Our multidisciplinary team provides continuous, coordinated care throughout the treatment process, including support for patients and their families.
• Recurrent Temporomandibular Joint Dislocation and Temporomandibular Joint Ankylosis
  We provide surgical treatment for recurrent temporomandibular joint (TMJ) dislocation and TMJ ankylosis. In particular, our department meets the institutional requirements for performing total temporomandibular joint replacement with artificial joint prostheses.
  We also utilize surgical navigation systems during TMJ surgery to enhance surgical safety and precision. These systems provide real-time visualization of the precise positions of surgical instruments and anatomical structures, functioning similarly to a GPS navigation system.
• Endoscope-Assisted Surgery for Jaw Fractures
  We perform endoscope-assisted reduction and fixation for mandibular condylar process fractures, particularly fractures involving the condylar base.