title: An in vitro comparison of nonvital bleaching techniques in the discolored tooth.
mesh_terms: D001881:Borates / Q000008:administration & dosage; D002384:Catalysis; D006801:Humans; D006861:Hydrogen Peroxide / Q000008:administration & dosage; D013816:Thermodynamics; D014073:Tooth Bleaching / Q000379:methods*; D014075:Tooth Discoloration / Q000628:therapy*
chemical_list: D001881:Borates; D006861:Hydrogen Peroxide; C027707:sodium perborate