Antibacterial effect of the lasers and photodynamic therapy against Enterococcus faecalis in the root canal system
Efeito antibacteriano dos lasers e terapia fotodinâmica contra Enterococcus faecalis no sistema de canais radiculares
Poly, Ane; Brasil, Juliana Fernandes Waldmann; Marroig, Paula Carvalho; Blei, Vânia; Risso, Patrícia de Andrade
Rev. odontol. UNESP, vol.39, n4, p.233-239, 2010
Abstract
The chemomechanical disinfection is crucial to the success of endodontic treatment. In this regard, methodologies are developed to ensure maximum disinfection of root canal system. The objective of this literature review was to evaluate the ability of lasers and photodynamic therapy (PDT) in eliminating Enterococcus faecalis, which is strongly associated with failure of endodontic therapy. The search for articles was performed in two ways: through the online study guides in the Journal of Endodontics and, through databases: BBO, PubMed/MEDLINE and OVID. In parallel, we performed cross-searching, given the references of selected articles. Inclusion criteria were: a) the time periods between April 2000 and February 2010; b) articles that evaluate antimicrobial effect of lasers and PDT on E. faecalis. After a complete reading of selected articles, were included: 15 articles that evaluated the antibacterial capacity of the laser, 10 of PDT and 5 that compared laser and PDT. Based on this review, concluded that: neither of the two techniques was 100% effective against E. faecalis, but were able to reduce their presence; PDT apparently showed more effective than laser in controlling this infection. Thus, therapies can be considered promising allied to conventional treatment in the control of endodontic infection by E. faecalis, which is characterized as complementary therapies.
Keywords
Enterococcus faecalis, lasers, photodynamic therapy
Resumo
O preparo químico-mecânico (PQM) é crucial para o sucesso do tratamento endodôntico. Neste sentido, metodologias são desenvolvidas a fim de garantir a máxima desinfecção do sistema de canais radiculares. Assim, o objetivo desta revisão de literatura foi avaliar a capacidade dos lasers e da terapia fotodinâmica (PDT) em eliminar o Enterococcus faecalis, fortemente associado ao fracasso da terapia endodôntica. A busca pelos artigos foi realizada de duas formas: por meio dos guias de estudo on line do Journal of Endodontics e por meio das bases de dados: BBO, PUBMED/MEDLINE e OVID. Paralelamente, foi realizada busca cruzada, considerando as referências bibliográficas dos artigos selecionados. Os critérios de inclusão foram: a) os períodos de tempo entre abril de 2000 e fevereiro de 2010; b) artigos que avaliassem o efeito antimicrobiano dos lasers e PDT sobre o E. faecalis. Após a leitura completa dos artigos selecionados, incluíram-se: 15 artigos que avaliaram a capacidade antibacteriana do laser, 10 artigos relativos à PDT e 5 artigos que compararam o laser e a PDT. Baseado nesta revisão, concluiu-se que nenhuma das duas técnicas foi 100% eficaz contra o E. faecalis, mas que foram capazes de reduzir sua presença; a PDT se mostrou aparentemente mais eficaz que o laser no controle desta infecção. Desta forma, as terapias podem ser consideradas aliadas promissoras ao tratamento convencional no controle da infecção endodôntica por E. faecalis, caracterizando-se como terapias complementares.
Palavras-chave
Enterococcus faecalis, lasers, terapia fotodinâmica
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