Abstract
To synthesise the current knowledge on the effects of probiotics in apical periodontitis progression by a scoping review of animal and human studies. Reporting was based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Extension for Scoping Reviews. The literature search and screening was performed on PubMed and Scopus databases by two independent reviewers selecting human and animal studies that evaluated the effectiveness of probiotics in reducing the severity of apical periodontitis. Two animal studies with 3 publications met the eligibility criteria for qualitative synthesis. The most common probiotics were Lactobacillus rhamnosus and Lactobacillus acidophilus orally administered for gavage in Wistar rats with induced apical periodontitis. Overall, probiotics significantly reduced inflammation and bone resorption with an improvement in the apical periodontitis progression. Although results in animal studies are promising, the use of probiotics in apical periodontitis progression requires caution due to the insufficient available evidence.
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