Local and systemic effects produced in different models of experimental periodontitis in mice: A systematic review

The objective of this study was to summarize and compare the local and systemic impact of different models of experimental periodontitis in mice.After defining the PICO strategy, was performed a search for articles in English following the PRISMA guidelines in PubMed, Embase, Scopus, Web of Science, Cochrane and LILACS databases. The search strategy provided 8815 articles from which were selected experimental studies comparing the local and/or systemic effects of two or more models for the induction of periodontitis in mice according to the inclusion and exclusion criteria.After selection, 7 articles that met the inclusion criteria for the review. Were analyzed differences between the following experimental models of periodontitis in mice: ligature, gavage, injection of bacteria, ligation embedded in bacteria and association between them.Although most experimental models of periodontitis are efficient in causing alveolar bone loss, there are differences in their characteristics. In ligature, an acute process is established and the host tends to repair itself, decreasing the significance of this loss over time. In models where bacterial challenge is added bone loss appears to be significant with longer induction time, indicating the presence of a chronic condition. Regarding systemic outcomes, gavage showed greater potential for modulating the host's response with systemic inflammatory changes, proving to be more promising between periodontitis and chronic systemic diseases.