AIM: To evaluate in vivo the microscopic pulpal response in sound human premolar teeth subjected tovital tooth bleaching with a 38% hydrogen peroxide (H(2)O(2)) bleaching gel (Opalescence X-tra Boost) catalysed or not by a halogen light source. METHODOLOGY:Twelve pairs of sound maxillary and/or mandibular premolar teeth from 12 to 18-year-old patients were selected and randomly assigned to the following experimental (n = 10) and control (n = 4) groups: group 1: bleaching gel + halogen light; group 2: bleaching gel; group 3: no treatment (control). The teeth were extracted 2-15 days after bleaching and were subjected to routine laboratory processing for histological analysis of the pulpal response under light microscopy. RESULTS: In almost all specimens of the experimental groups, the pulp tissue exhibited histological characteristics of normality. Only one specimen in each group exhibited some dilated and congested blood vessels among a discrete number of mononuclear inflammatory cells in the peripheral pulp region related to the buccal surface of the tooth. These specimens had a slight disruption to the odontoblastic layer, which characterized discrete tissue disorganization. Some deposition of reactionary dentine occurred in only one specimen of group 2. CONCLUSIONS: Professionally applied vital tooth bleaching with a 38% H(2)O(2) gel with or without activation by a halogen light source did not cause damage to the pulp tissue of sound human premolar teeth.
RCT Entities:
AIM: To evaluate in vivo the microscopic pulpal response in sound human premolar teeth subjected to vital tooth bleaching with a 38% hydrogen peroxide (H(2)O(2)) bleaching gel (Opalescence X-tra Boost) catalysed or not by a halogen light source. METHODOLOGY: Twelve pairs of sound maxillary and/or mandibular premolar teeth from 12 to 18-year-old patients were selected and randomly assigned to the following experimental (n = 10) and control (n = 4) groups: group 1: bleaching gel + halogen light; group 2: bleaching gel; group 3: no treatment (control). The teeth were extracted 2-15 days after bleaching and were subjected to routine laboratory processing for histological analysis of the pulpal response under light microscopy. RESULTS: In almost all specimens of the experimental groups, the pulp tissue exhibited histological characteristics of normality. Only one specimen in each group exhibited some dilated and congested blood vessels among a discrete number of mononuclear inflammatory cells in the peripheral pulp region related to the buccal surface of the tooth. These specimens had a slight disruption to the odontoblastic layer, which characterized discrete tissue disorganization. Some deposition of reactionary dentine occurred in only one specimen of group 2. CONCLUSIONS: Professionally applied vital tooth bleaching with a 38% H(2)O(2) gel with or without activation by a halogen light source did not cause damage to the pulp tissue of sound human premolar teeth.
Authors: Adriano Fonseca Lima; Ana Paula Dias Ribeiro; Fernanda Gonçalves Basso; Vanderlei Salvador Bagnato; Josimeri Hebling; Giselle Maria Marchi; Carlos Alberto de Souza Costa Journal: Lasers Med Sci Date: 2013-03-23 Impact factor: 3.161
Authors: Rafael Antonio de Oliveira Ribeiro; Uxua Ortecho Zuta; Igor Paulino Mendes Soares; Caroline Anselmi; Diana Gabriela Soares; André Luiz Fraga Briso; Josimeri Hebling; Carlos Alberto de Souza Costa Journal: Clin Oral Investig Date: 2022-08-16 Impact factor: 3.606
Authors: Diana Gabriela Soares; Ana Paula Dias Ribeiro; Fernanda da Silveira Vargas; Josimeri Hebling; Carlos Alberto de Souza Costa Journal: Clin Oral Investig Date: 2012-12-06 Impact factor: 3.573