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):whereinthe Rs,which may be the same or different, independently represent a branched C3-8 alkyl or alkenyl group, or a C3-8 cycloalkyl or cycloalkenyl group,R'represents a C1-6 alkyl or C2-6 alkenyl group, or a C1-6 fluoroalkyl or C2-6 fluoroalkenyl group,Xrepresents a group selected from a C1-8 alkyl group or a C3-8 cycloalkyl group, andnis 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.
