The present invention relates to an aqueous dental composition having a pH of less than 7 as well as to the use of a stabilizer for the preparation of an aqueous dental composition having a pH of less than 7. In particular, the present invention relates to an aqueous dental composition having a pH of less than 7 comprising (i) one or more polymerizable compounds having at least one polymerizable double bond； (ii) a polymerization initiator system containing (a) an 1,2-diketone photoinitiator compound having a light absorption maximum in the range from 300 to 500 nm； and (b) a coinitiator compound； (iii) a stabilizer of the following formula (I) and/or (II): wherein the Rs, which may be the same or different, independently represent a branched C 3-8 alkyl or alkenyl group, or a C 3-8 cycloalkyl or cycloalkenyl group, R' represents a C 1-6 alkyl or C 2-6 alkenyl group, or a C 1-6 fluoroalkyl or C 2-6 fluoroalkenyl group, X represents a group selected from a C 1-8 alkyl group or a C 3-8 cycloalkyl group, and n is 0, 1 or 2； and (iv) a solvent mixture comprising an organic solvent and at least 1 percent by weight of water based on the total weight of the aqueous dental composition.La présente invention concerne une composition dentaire aqueuse ayant un pH inférieur à 7 ainsi que l'utilisation d'un agent stabilisant pour la préparation d'une composition dentaire aqueuse ayant un pH inférieur à 7. En particulier, la présente invention concerne une composition dentaire aqueuse ayant un pH inférieur à 7 comprenant (i) un ou plusieurs composés polymérisables ayant au moins une double liaison polymérisable； (ii) un système initiateur de polymérisation contenant (a) un composé photo-amorceur 1,2-dicétone présentant un maximum d'absorption de lumière dans la plage de 300 à 500 nm； et (b) un composé co-amorceur； (iii) un agent stabilisant ayant la/les formule(s) (I) et/ou (II) suivante(s), dans lesquelles les R, qui peuvent être identiq
