Laser Influence on Dental Sensitivity Compared to Other Light Sources Used during In-office Dental Bleaching: Systematic Review and Meta-analysis
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2020-12-01
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da Silva Casado, Bruno Gustavo
Pellizzer, Eduardo Piza [UNESP]
Maior, Juliana Raposo Souto
Lemos, Cleidiel Aparecido Araújo [UNESP]
do Egito Vasconcelos, Belmiro Cavalcanti
de Moraes, Sandra Lucia Dantas
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Objective: To evaluate whether the use of laser during in-office bleaching promotes a reduction in dental sensitivity after bleaching compared with other light sources. Methods: The present review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) and is registered with PROSPERO (CDR42018096591). Searches were conducted in the PubMed/Medline, Web of Science, and Cochrane Library databases for relevant articles published up to August 2018. Only randomized clinical trials among adults that compared the use of laser during in-office whitening and other light sources were considered eligible. Results: After analysis of the texts retrieved during the database search, six articles met the eligibility criteria and were selected for the present review. For the outcome dental sensitivity, no significant difference was found favoring any type of light either for intensity (mean difference [MD]: –1.60; confidence interval [CI]: –3.42 to 0.22; p=0.09) or incidence (MD: 1.00; CI: 0.755 to 1.33; p=1.00). Regarding change in tooth color, no significant differences were found between the use of the laser and other light sources (MD: –2.22; CI: –6.36 to 1.93; p=0.29). Conclusions: Within the limitations of the present study, laser exerts no influence on tooth sensitivity compared with other light sources when used during in-office bleaching. The included studies demonstrated that laser use during in-office bleaching may have no influence on tooth color change.
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Operative Dentistry, v. 45, n. 6, p. 589-597, 2020.