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Injectable Calcium Phosphate Bone Cement Provides Favorable Space and a Scaffold for Periodontal Regeneration in Dogs
Author(s) -
Hayashi Chie,
Kinoshita Atsuhiro,
Oda Shigeru,
Mizutani Koji,
Shirakata Yoshinori,
Ishikawa Isao
Publication year - 2006
Publication title -
journal of periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.036
H-Index - 156
eISSN - 1943-3670
pISSN - 0022-3492
DOI - 10.1902/jop.2006.050283
Subject(s) - scaffold , regeneration (biology) , dentistry , calcium , cement , calcium phosphate cement , phosphate , chemistry , biomedical engineering , medicine , materials science , biology , composite material , microbiology and biotechnology , biochemistry , organic chemistry
Background: An earlier study showed that an injectable calcium phosphate cement (CPC) served as a stable scaffold for bone formation and promoted histocompatible healing of periodontal tissue in dogs. In this study, we evaluated the influence of CPC on regeneration of periodontal defects with experimental periodontitis in dogs. Methods: Experimental periodontitis was induced by placing stainless‐steel mesh on the mesial side of maxillary canines in six adult, healthy beagle dogs. Subsequently, intrabony defects were resized so as to be standard, and CPC was injected in the experimental bone defects. Non‐grafted defects on the contralateral side served as controls. Twelve weeks after surgery, the animals were sacrificed and histologic specimens were prepared. Periodontal tissue healing was evaluated histologically and histometrically. Results: Healing of periodontal tissues, in terms of bone and cementum formation, was consistently observed in the CPC‐applied sites. CPC was partly replaced by new bone. New cementum and periodontal ligament‐like tissue were observed between CPC and the root surface. New bone ( P <0.05), new cementum ( P <0.01), and new connective tissue attachment and adhesion ( P <0.05) were significantly enhanced in the experimental sites. Conclusion: Calcium phosphate cement provides stable wound healing and enhanced periodontal regeneration in periodontal defects in dogs with experimental periodontitis.