Influence of different types of light on the response of the pulp tissue in dental bleaching: a systematic review
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Universidade Federal de Minas Gerais
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Artigo de periódico
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Objectives This systematic review (PROSPERO register: CRD42016053140) investigated the influence of different types of
light on the pulp tissue during dental bleaching.
Materials and methods Two independent authors conducted a systematic search and risk of bias evaluations. An electronic search
was undertaken (PubMed/Medline, Embase, The Cochrane Library, and other databases) until May 2017. The population, intervention, comparison, outcomes (PICO) question was: BDoes the light in dental bleaching change the response of the pulp to the
bleaching procedure?^ The intervention involved pulp tissue/cells after bleaching with light, while the comparison involved pulp
tissue/cells after bleaching without light. The primary outcome was the inflammation/cytotoxicity observed in pulp after bleaching.
Results Out of 2210 articles found, 12 articles were included in the review; four were in vivo studies (one study in dogs/others in
human), and eight were in vitro studies (cell culture/with artificial pulp chamber or not). The light source used was halogen, lightemitting diode (LED), and laser. Only one in vivo study that used heat to simulate light effects showed significant pulp inflammation. Only two in vitro studies demonstrated that light influenced cell metabolism; one using halogen light indicated negative
effects, and the other using laser therapy indicated positive effects. Given that animal and in vitro studies have been identified, there
remain some limitations for extrapolation to the human situation. Furthermore, different light parameters were used.
Conclusions The effects of dental bleaching on the pulp are not influenced by different types of light, but different light parameters
can influence these properties.
Clinical relevance There is insufficient evidence about the influence of different types of light on inflammation/cytotoxicity of the pulp.
Abstract
Assunto
Tooth bleaching, Low-level light therapy, Systematic review
Palavras-chave
Dental bleaching, . Light activation, . Low-level laser therapy, . Pulp inflammation, . Systematic review
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https://link.springer.com/article/10.1007/s00784-017-2278-9