J Martín1, P Vildósola1, C Bersezio1, A Herrera2, J Bortolatto3, J R C Saad3, O B Oliveira3, E Fernández4. 1. Department of Restorative Dentistry, Faculty of Dentistry, University of Chile, Sergio Livingstone Pohlhammer 943, Independencia, Santiago, Chile; Univ. Estadual Paulista-Unesp, School of Dentistry, Rua Humaitá, 1680-Centro-CEP, 14801-903 Araraquara, Brazil. 2. Department of Basic Sciences, Faculty of Dentistry, University of Chile, Sergio Livingstone Pohlhammer 943, Independencia, Santiago, Chile. 3. Univ. Estadual Paulista-Unesp, School of Dentistry, Rua Humaitá, 1680-Centro-CEP, 14801-903 Araraquara, Brazil. 4. Department of Restorative Dentistry, Faculty of Dentistry, University of Chile, Sergio Livingstone Pohlhammer 943, Independencia, Santiago, Chile; Univ. Estadual Paulista-Unesp, School of Dentistry, Rua Humaitá, 1680-Centro-CEP, 14801-903 Araraquara, Brazil. Electronic address: edofdez@yahoo.com.
Abstract
OBJECTIVE: The aim of this clinical randomized double-blind split-mouth study was to assess the effectiveness of a 6% hydrogen peroxide with nitrogen-doped titanium dioxide light activated bleaching agent. METHOD:31 patients were treated with: one upper hemiarcade with a 35% hydrogen peroxide bleaching agent and the other hemiarcade with a 6% hydrogen peroxide. Two applications were completed each treatment session and three sessions were appointed, with one week interval between them. Tooth colour was registered each session and 1 week and 1 months after completing the treatment by spectrophotometer, registering parameters L*, a* and b*, and subjectively using VITA Classic guide. Tooth sensitivity was registered by VAS and patient satisfaction and self-perception result was determined using OHIP-14. Tooth colour variation and sensitivity were compared between both bleaching agents. RESULTS: Both treatment showed a change between baseline colour and all check-points with a ΔE=5.57 for 6% and of ΔE=7.98 for the 35% one month after completing the (p<0.05). No statistical differences were seen when subjective evaluations were compared. Also, no differences were seen in tooth sensitivity between bleaching agents. OHIP-14 questionnaire demonstrated a significant change for all patients after bleaching. CONCLUSIONS: A 6% hydrogen peroxide with nitrogen-doped titanium dioxide light activated agent is effective for tooth bleaching, reaching a ΔE of 5.57 one month after completing the treatment, with no clinical differences to a 35% agent neither in colour change or in tooth sensitivity. CLINICAL SIGNIFICANCE: A low concentration hydrogen peroxide bleaching agent may reach good clinical results with less adverse effects.
RCT Entities:
OBJECTIVE: The aim of this clinical randomized double-blind split-mouth study was to assess the effectiveness of a 6% hydrogen peroxide with nitrogen-doped titanium dioxide light activated bleaching agent. METHOD: 31 patients were treated with: one upper hemiarcade with a 35% hydrogen peroxide bleaching agent and the other hemiarcade with a 6% hydrogen peroxide. Two applications were completed each treatment session and three sessions were appointed, with one week interval between them. Tooth colour was registered each session and 1 week and 1 months after completing the treatment by spectrophotometer, registering parameters L*, a* and b*, and subjectively using VITA Classic guide. Tooth sensitivity was registered by VAS and patient satisfaction and self-perception result was determined using OHIP-14. Tooth colour variation and sensitivity were compared between both bleaching agents. RESULTS: Both treatment showed a change between baseline colour and all check-points with a ΔE=5.57 for 6% and of ΔE=7.98 for the 35% one month after completing the (p<0.05). No statistical differences were seen when subjective evaluations were compared. Also, no differences were seen in tooth sensitivity between bleaching agents. OHIP-14 questionnaire demonstrated a significant change for all patients after bleaching. CONCLUSIONS: A 6% hydrogen peroxide with nitrogen-doped titanium dioxide light activated agent is effective for tooth bleaching, reaching a ΔE of 5.57 one month after completing the treatment, with no clinical differences to a 35% agent neither in colour change or in tooth sensitivity. CLINICAL SIGNIFICANCE: A low concentration hydrogen peroxide bleaching agent may reach good clinical results with less adverse effects.
Authors: Cristian Bersezio; Javier Martín; Carla Mayer; Oriana Rivera; Juan Estay; Rolando Vernal; Ziyad S Haidar; Pablo Angel; Osmir B Oliveira; Eduardo Fernández Journal: Qual Life Res Date: 2018-08-21 Impact factor: 4.147
Authors: A Herrera; J Martín; F Pérez; E Bonafé; A Reis; A Loguercio Dourado; E Fernández Journal: Clin Oral Investig Date: 2016-01-11 Impact factor: 3.573