Patent ID: 8026295

Claim:
Dental composition having an improved light and thermal stability, comprising a mixture of (i) at least one polymerizable resin (ii) at least one polymerizable monomer (iii) at least one polymerization initiator and/or a sensitizer and stabilizer (iv) at least one organic or inorganic filler and pigments in a content of 0 to 90 percent (v) and at least one of the stable radicals of formulas 1, 3, 4 or 5 wherein R 0 denotes a C 1 to C 18 alkylene, R 1 , R 2 , R 3 and R 4 denotes a C 1 to C 18 alkylene, wherein X is wherein Y is wherein Z is wherein R 5 is a difunctional C 1 to C 18 alkylene, C 5 to C 18 cycloalkylene, or C 5 to C 18 arylene or heteroarylene, R 6 is a difunctional C 1 to C 18 alkylene, C 5 to C 18 cycloalkylene, or C 5 to C 18 arylene or heteroarylene, R 7 is difunctional C 1 to C 18 alkylene, C 5 to C 18 cycloalkylene, or C 5 to C 18 arylene or heteroarylene, R 8 is H, a monofunctional C 2 to C 30 alkylene, C 5 to C 30 cycloalkylene, or C 5 to C 30 arylene or heteroarylene, and R 9 is a monofunctional C 2 to C 30 alkylene, C 5 to C 30 cycloalkylene, or C 5 to C 30 arylene or heteroarylene, wherein n, m and o are positive integers.