| 摘要 |
Dental compositions comprising an addition-fragmentation agent having the formula:
wherein
R 1 , R 2 and R 3 are each independently Z m -Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least two of R 1 , R 2 and R 3 is Z m -Q-;
Q is a linking group have a valence of m +1;
Z is an ethylenically unsaturated polymerizable group;
m is 1 to 6;
each X 1 is independently -O- or -NR 4 -, where R 4 is H or C 1 -C 4 alkyl; and
n is 0 or 1;
at least one multifunctional monomer comprising at least two ethylenically unsaturated group; optionally an inorganic filler; and a redox initiator system; and the use thereof are described. |
