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   Offical Journal of The Academy of Osseointegration

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Volume 32 , Issue 3
June 2012

Pages 331-336

Ankylosis of Nonresorbable Hydroxyapatite Graft Material as a Contributing Factor in Recurrent Periodontitis

Naoto Yoshinuma, DDS, PhD/Shuichi Sato, DDS, PhD/Tomihisa Fukuyama, DDS/Kazuya Ishibashi, DDS/Masakazu Murai, DDS, PhD/Koichi Ito, DDS, MSD, PhD

PMID: 22408771
DOI: 10.11607/prd.00.1075

Many studies have shown that alloplastic bone grafts are clinically stable and safe. Nevertheless, postoperative problems such as ankylosis and root resorption are associated with alloplastic bone grafts. This report examined two cases of ankylosis of nonresorbable hydroxyapatite (NHA) alloplastic grafts associated with recurrent periodontitis. There was no clear border between the NHA particles and dentin. The particles were irregularly shaped and had plaque on the surfaces. It is postulated that ankylosis of NHA particles and dentin is a contributing factor in recurrent periodontitis. (Int J Periodontics Restorative Dent 2012;32:331336.)

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