Division of Periodontics;
Department of Preventive and Conservative Dentistry;
Niigata University Medical and Dental Hospital;
Niigata;
Japan;
Division of Periodontology;
Department of Oral Biological Science;
Niigata University Graduate School of Medical and Dental Sciences;
Niigata;
Japan;
Omote-Sando Dental Office;
Tokyo;
Japan;
Yamabuki Dental Clinic;
Ibaraki;
Japan;
Division of Preventive Dentistry;
Niigata Graduate School of Medical and Dental Sciences;
Niigata;
Japan;
Periodontitis; Regenerative; Therapy; Membrane; Enamel; Matrix; Derivative; Bone; Substitutes; Computed; Tomography;