title: Removal of infected nonresorbable hydroxyapatite graft material in recurrent periodontitis: a report of two cases.
abstract: Long-term studies have indicated that alloplastic bone grafts composed of nonresorbable hydroxyapatite (NHA) are clinically stable and safe. However, our previous report suggested that NHA grafts may be an etiological factor for recurrent periodontitis in the absence of supportive periodontal treatment (SPT). We removed infected NHA from the root surface by flap surgery in two cases of recurrent periodontitis. After removal of the infected NHA, the inflammation subsided in these cases and they were clinically stable for several years.
authors.affiliation: Department of Periodontology, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan. sato-su@dent.nihon-u.ac.jp
authors.forename: Shuichi
authors.initials: S
authors.lastname: Sato
authors.forename: Naoto
authors.initials: N
authors.lastname: Yoshinuma
authors.forename: Osamu
authors.initials: O
authors.lastname: Kishida
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Fujisaki
authors.forename: Koichi
authors.initials: K
authors.lastname: Ito
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000601:surgery*; D000844:Ankylosis / Q000209:etiology; D018786:Bone Substitutes / Q000009:adverse effects*; D017886:Durapatite / Q000009:adverse effects; D005260:Female; D006097:Granulation Tissue; D006801:Humans; D008297:Male; D019647:Oral Surgical Procedures / Q000009:adverse effects*; D010518:Periodontitis / Q000209:etiology*; D012391:Root Resorption / Q000209:etiology; D013530:Surgical Wound Infection / Q000150:complications* / Q000209:etiology
chemical_list: D018786:Bone Substitutes; D017886:Durapatite