assessment of the antimicrobial activity of tetracycline hydrochloride diluted in three different vehicles against , , and .

Background: The development and progression of periodontal diseases is a result of the dynamic interaction of microorganisms within their habitat, and changes in this habitat generate a dysbiotic state. and are bridging microorganisms between the pioneer communities and other microorganisms responsible for periodontitis such as . Tetracycline hydrochloride (TTC-HCl) is commonly used as a coadjutant in periodontal treatment in the form of an antiseptic.