Porphyromonas is a bacterial genus that contains both the most studied gum-disease pathogen (P. gingivalis) and several commensal species associated with oral health (P. pasteri, P. catoniae). Your panel reports each species individually. In healthy adult saliva, the majority of Porphyromonas signal comes from commensal species — so a Porphyromonas sp number on its own (without confirmed P. gingivalis) does not equal "P. gingivalis level."
Maintain regular periodontal care: twice-daily brushing, daily flossing, and professional cleanings. The most reliable way to keep pathogenic Porphyromonas species low is to keep gums healthy.
Daily chlorhexidine and alcohol-based mouthwashes for routine use. They do reduce P. gingivalis but at the cost of killing health-associated nitrate-reducers, with measurable blood pressure effects within one day.
Species pages
Deeper writeups for individual species in this genus.
Synthesized from 14 peer-reviewed sources · Last updated May 2026
This information is for wellness purposes only and is not a medical assessment. Always consult a medical professional about any health concerns.