![\"Bacterial](\"https:\/\/www.newsbeep.com\/il\/wp-content\/uploads\/2025\/12\/oral-microbiome-1024x577.jpg\")
Bacterial communication \u2014 known as quorum sensing \u2014 allows microbes to detect their population density and coordinate community behaviour. (iStock)<\/p>\nBacterial communication \u2014 known as quorum sensing \u2014 allows microbes to detect their population density and coordinate community behaviour. (iStock)<\/p>\n
Dental researchers are exploring how bacterial \u201cconversations\u201d in the mouth shape the ecology of dental plaque \u2014 and how interrupting those signals could favour a healthier microbial balance without harming beneficial species.<\/p>\n
A team from the College of Biological Sciences and the School of Dentistry at the University of Minnesota<\/a> has detailed how bacterial communication via N-acyl homoserine lactones (AHLs) influences the composition of oral biofilms, particularly the shift from health-associated bacteria toward species linked to periodontal disease. Their findings were published in the journal npj Biofilms and Microbiomes <\/a>in late 2025.<\/p>\n Bacterial communication \u2014 known as quorum sensing \u2014 allows microbes to detect their population density and coordinate community behaviour. In dental plaque, which contains hundreds of microbial species, AHL signals can be produced in oxygen-rich zones above the gumline and perceived by bacteria in oxygen-poor niches below the gumline.<\/p>\n \u201cUnderstanding how bacterial communities communicate and organize themselves may ultimately give us new tools to prevent periodontal disease\u2014not by waging war on all oral bacteria, but by strategically maintaining a healthy microbial balance,\u201d said Mikael Elias, associate professor in the College of Biological Sciences and senior author of the study.<\/p>\n