Storage stable two-component dual cure dental composition

A dental composition comprising a Base Part and a Catalyst Part to be mixed before use,

• the Base Part comprising:
• polymerizable component(s) without an acidic moiety,
• optionally polymerizable component(s) with an acidic moiety,
• filler(s),
• copper (II) salt transition metal component(s),
• peroxide component(s),
• stabilizer component(s) comprising a free-radical moiety represented by Formula I:
• wherein:
• X′ is O or S;
• or
• stabilizer component(s) comprising a free-radical moiety represented by Formula II:
• wherein:
• X″ is —H, —OH, —SH, —OR, or —SR, and
• R is —H, C1-12 alkyl, C1-12 alkenyl, C1-12 alkylaryl, or C1-12 arylalkyl;
• or
• stabilizer component(s) comprising a free-radical moiety represented by Formula III:
• wherein:
• X″ is —O— or —S—,
• Y is C and
• R is —H, C1-12 alkyl, C1-12 alkenyl, C1-12 alkylaryl, or C1-12 arylalkyl;
• or
• stabilizer component(s) comprising a free-radical moiety selected from 4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl and 4-acetamido-2,2,6,6-tetramethylpiperidine-1-oxyl,
• the Catalyst Part comprising:
• polymerizable component(s) without an acidic moiety,
• filler(s),
• ascorbic acid component,
• photo-initiator system,
• stabilizer component(s) comprising a phosphite or sulfite moiety.