1. Medical Corporation Kohwakai OOTAWA Dental Clinic Maxillofacial Implant Center Fukuoka Japan
2. Section of Oral Implantology, Department of Oral Rehabilitation Fukuoka Dental College Fukuoka Japan
3. Department of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science Kyushu University Fukuoka Japan
4. Section of Oral and Maxillofacial Surgery, Division of Maxillofacial and Diagnostic and Surgical Sciences, Faculty of Dental Science Kyushu University Fukuoka Japan