%0 Journal Article %T Clinical comparison of two self‐directed bleaching systems %A Karpinia, Katherine %A Magnusson, Ingvar %A Barker, Matthew L. %A Gerlach, Robert W. %J Journal of Prosthodontics %V 12 %N 4 %@ 1059-941X %D 2003-12-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve