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http://dx.doi.org/10.5051/jpis.2013.43.4.147

Development of animal experimental periodontitis models  

Do, Min-Jae (Department of Chemistry, Graduate School of Nanoscience and Technology (WCU), Korea Advanced Institute of Science and Technology)
Kim, Kyuri (Department of Chemistry, Graduate School of Nanoscience and Technology (WCU), Korea Advanced Institute of Science and Technology)
Lee, Haeshin (Department of Chemistry, Graduate School of Nanoscience and Technology (WCU), Korea Advanced Institute of Science and Technology)
Cha, Seho (Department of Life Science, Dongguk University)
Seo, Taegun (Department of Life Science, Dongguk University)
Park, Hee-Jung (Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry)
Lee, Jeong-Soon (Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry)
Kim, Tae-Il (Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry)
Publication Information
Journal of Periodontal and Implant Science / v.43, no.4, 2013 , pp. 147-152 More about this Journal
Abstract
Purpose: An animal periodontitis model is essential for research on the pathogenesis and treatment of periodontal disease. In this study, we have introduced a lipopolysaccharide (LPS) of a periodontal pathogen to the alveolar bone defect of experimental animals and investigated its suitability as a periodontitis model. Methods: Alveolar bone defects were made in both sides of the mandibular third premolar region of nine beagle dogs. Then, the animals were divided into the following groups: silk ligature tied on the cervical region of tooth group, Porphyromonas gingivalis LPS (P.g. LPS)-saturated collagen with silk ligature group, and no ligature or P.g. LPS application group as the control. The plaque index and gingival index were measured at 0 and 4 weeks postoperatively. The animals were then euthanized and prepared for histologic evaluation. Results: The silk ligature group and P.g. LPS with silk ligature group showed a significantly higher plaque index at 4 weeks compared to the control (P<0.05). No significant difference was found in the plaque index between the silk ligature group and P.g. LPS with silk ligature group. The P.g. LPS with silk ligature group showed a significantly higher gingival index compared to the silk ligature group or the control at 4 weeks (P<0.05). Histologic examination presented increased inflammatory cell infiltration in the gingival tissue and alveolar bone of the P.g. LPS with silk ligature group. Conclusions: An additional P.g. LPS-saturated collagen with silk ligature ensured periodontal inflammation at 4 weeks. Therefore, P.g. LPS with silk ligature application to surgically created alveolar bone defects may be a candidate model for experimental periodontitis.
Keywords
Animal models; Lipopolysaccharides; Periodontitis; Porphyromonas gingivalis;
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