Imbalances of the oral microbiota in recurrent aphthous stomatitis: a systematic review

Abstract

The etiopathogenesis of recurrent aphthous stomatitis is still unknown, however, there are some studies that report a probable role of the presence of some microbial communities in the alteration of the oral microbiota. In this systematic review (PROSPERO registry # CRD42021259427), we evaluated whether imbalances in the oral microbiota are associated with recurrent aphthous stomatitis. From case-control studies we determined that bacterial diversity does not change notably in sick people, however these changes are evident in terms of relative abundance, such as the increase in the genus Prevotella and the decrease in the genus Streptococcus.