The present invention relates to a bacteria detecting dental composition comprising a solution of at least one electron acceptor and at least one electron donor wherein the electron acceptor and the electron donor are selected that in the solution itself the electron donor can not transmit reduction equivalents to the electron acceptor and wherein the dental composition is substantially free of compounds that enable or facilitate the electron transmission between the electron acceptor and the electron donor.
The present invention further relates to the use of a composition comprising a solution of at least one electron acceptor and at least one electron donor wherein the electron acceptor and the electron donor are selected that in the solution itself the electron donor can not transmit reduction equivalents to the electron acceptor and wherein the composition is substantially free of compounds that enable or facilitate the electron transmission between the electron acceptor and the electron donor for site-directed intraoral detection of bacteria.