William H. Moser;Joel D. Oxman;Ahmed S. Abuelyaman;Chuntao Cao;Bradley D. Craig;Afshin Falsafi;Babu N. Gaddam;Timothy D. Dunbar;Larry R. Krepski;Hoa T. Bui;Guy D. Joly
发明人:
Guy D. Joly,Larry R. Krepski,Babu N. Gaddam,Ahmed S. Abuelyaman,Bradley D. Craig,Timothy D. Dunbar,Chuntao Cao,Joel D. Oxman,Afshin Falsafi,William H. Moser,Hoa T. Bui
申请号：
US13978557
公开号：
US20130316307A1
申请日:
2012.02.08
申请国别(地区):
US
年份:
2013
代理人:
摘要：
Dental compositions are described comprising an addition-fragmentation agent comprising at least one ethylenically unsaturated terminal group and a backbone unit comprising an α,β-unsaturated carbonyl； at least one monomer comprising at least two ethylenically unsaturated group； and inorganic oxide filler. The addition-fragmentation agent is preferably free-radically cleavable. The addition-fragmentation agent preferably comprises at least two ethylenically unsaturated terminal groups, such as (meth)acTylate groups. In some embodiments, the addition-fragmentation agent has the formula: wherein R1, R2 and R3 are each independently Zm, -Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least one of R1, R2 and R3 is Zm-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 X1 is independently —O— or —NR4—, where R4 is H or C1-C4 alkyl； and n is 0 or 1. Also described are dental articles prepared from a dental composition comprising an addition-fragmentation agent and methods of treating a tooth surface.
