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doi: 10.1597/03-035.1
The Cleft Palate-Craniofacial Journal: Vol. 42, No. 2, pp. 128–137.

Application of Limited Cone Beam Computed Tomography to Clinical Assessment of Alveolar Bone Grafting: A Preliminary Report
Yoshiki Hamada, D.D.S., Ph.D.
Toshirou Kondoh, D.M.D., Ph.D.
Kazuhide Noguchi, D.D.S.
Mitsuyoshi Iino, D.D.S., Ph.D.
Hiroaki Isono, D.M.D., Ph.D.
Hiroaki Ishii, D.M.D., Ph.D.
Akira Mishima, R.T.
Kaoru Kobayashi, D.M.D., Ph.D.
Kanichi Seto, D.D.S., Ph.D.

Dr. Hamada is Assistant Professor, First Department of Oral and Maxillofacial Surgery, Tsurumi University, School of Dental Medicine, Yokohama, Japan. Dr. Kondoh is Professor, Department of Oral Surgery, School of Dentistry at Matsudo, Nihon University, Matsudo, Japan. Dr. Noguchi is Instructor, First Department of Oral and Maxillofacial Surgery, Tsurumi University, School of Dental Medicine, Yokohama, Japan. Dr. Iino is Assistant Professor, Division of Dentistry and Oral Surgery, Akita University School of Medicine, Akita, Japan. Dr. Isono is Instructor, Department of Orthodontics, Tsurumi University, School of Dental Medicine, Yokohama, Japan. Dr. Ishii is Assistant Professor, First Department of Oral and Maxillofacial Surgery, Tsurumi University, School of Dental Medicine, Yokohama, Japan. Mr. Mishima is Radiological Technologist, Department of Oral Radiology, Tsurumi University, School of Dental Medicine, Yokohama, Japan. Dr. Kobayashi is Associate Professor, Department of Oral Radiology, Tsurumi University, School of Dental Medicine, Yokohama, Japan. Dr. Seto is Professor and Chairman, First Department of Oral and Maxillofacial Surgery, Tsurumi University, School of Dental Medicine, Yokohama, Japan

Submitted March 2003; Accepted February 2004.

Objectives: The aim of this study was to demonstrate the clinical applicability of limited cone beam computed tomography (Dental 3D-CT) for assessment of bone-grafted alveolar cleft.

Patients and Methods: Seventeen bone bridges were examined after alveolar bone grafting in 13 patients with cleft lip and palate. All bone bridges, including cleft-adjacent teeth, were examined by plain radiography and the Dental 3D-CT imaging system.

Results: The plain radiographs showed the approximate condition of the bone bridge and cleft-adjacent teeth. The Dental 3D-CT images clearly showed precise three-dimensional (3D) morphology of the bone bridge, 3D relationships between the bone bridge and the roots of cleft-adjacent teeth, and their periodontal condition. In addition, the conditions surrounding dental implants installed in the bone bridge could be observed three-dimensionally.

Conclusions: The results indicate that the Dental 3D-CT imaging system is suitable for clinical assessment of alveolar bone grafting before and after installation of dental implants or orthodontic treatment of the cleft-adjacent teeth.

KEY WORDS:alveolar bone grafting, cleft lip and palate, cone beam computed tomography

© 2005, The American Cleft Palate-Craniofacial Association