title: Influence of gel color on in vitro surface and intrapulpal temperature rise during blue light-activated tooth bleaching.
abstract: This study evaluated the null hypothesis that the color of a bleaching gel has no effect on temperature because it absorbs the light used during photocuring. This study used 10 maxillary central incisors (offering endodontic access) and a digital thermometer with thermocouples. One end of the thermocouple was placed on the labial surface (immersed in bleaching gel); the other end was placed in the pulp chamber. The bleaching materials each offered two color options: blue and red. The bleaching agents were activated with a LED hybrid blue light photocuring unit and a low intensity diode laser. Based on the blue light-activated bleaching, it was determined that the red gel produced significantly higher temperature increases than the blue gel. No significant differences were found between the two brands of gel tested.
authors: Department of Dentistry, Sao Paulo University, School of Dentistry, SP, Brazil.
authors: Gisela Muassab
authors: GM
authors: Castanho
authors: Sandra Costa
authors: SC
authors: Zamboni
authors: Carlos Rocha Gomes
authors: CR
authors: Torres
mesh_terms: D000042:Absorption; D001831:Body Temperature / Q000502:physiology*; D003116:Color; D055117:Curing Lights, Dental; D003782:Dental Pulp / Q000502:physiology*; D005782:Gels; D006801:Humans; D006861:Hydrogen Peroxide / Q000008:administration & dosage / Q000737:chemistry / Q000627:therapeutic use; D007180:Incisor; D054023:Lasers, Semiconductor; D008422:Materials Testing; D016877:Oxidants / Q000008:administration & dosage / Q000737:chemistry / Q000627:therapeutic use*; D055668:Photochemical Processes; D013821:Thermometers; D013997:Time Factors; D014073:Tooth Bleaching / Q000379:methods*
chemical_list: D005782:Gels; D016877:Oxidants; C523699:pola office; D006861:Hydrogen Peroxide