Development of animal experimental periodontitis models.
10.5051/jpis.2013.43.4.147
- Author:
Min Jae DO
1
;
Kyuri KIM
;
Haeshin LEE
;
Seho CHA
;
Taegun SEO
;
Hee Jung PARK
;
Jeong Soon LEE
;
Tae Il KIM
Author Information
1. Department of Chemistry, Graduate School of Nanoscience and Technology (WCU), Korea Advanced Institute of Science and Technology, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Animal models;
Lipopolysaccharides;
Periodontitis;
Porphyromonas gingivalis
- MeSH:
Animal Experimentation;
Animals;
Bicuspid;
Collagen;
Dogs;
Inflammation;
Ligation;
Lipopolysaccharides;
Models, Animal;
Periodontal Diseases;
Periodontal Index;
Periodontitis;
Porphyromonas gingivalis;
Silk;
Tooth
- From:Journal of Periodontal & Implant Science
2013;43(4):147-152
- CountryRepublic of Korea
- Language:English
-
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.
