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Effect of edta and qmix ultrasonic activation on the reduction of microorganisms and endotoxins in ex vivo human root canals
Department of Restorative DentistryMatos, Felipe de Souza; Department of Restorative DentistryKhoury, Rayana Duarte; Department of Restorative DentistryCarvalho, Cláudio Antonio Talge; Martinho, Frederico Canato; Department of Restorative DentistryBresciani, Eduardo; Department of Restorative DentistryValera, Marcia Carneiro.
  • Department of Restorative DentistryMatos, Felipe de Souza; Universidade Estadual Paulista. Institute of Science and Technology. Department of Restorative DentistryMatos, Felipe de Souza. São José dos Campos. BR
  • Department of Restorative DentistryKhoury, Rayana Duarte; Universidade Estadual Paulista. Institute of Science and Technology. Department of Restorative DentistryKhoury, Rayana Duarte. São José dos Campos. BR
  • Department of Restorative DentistryCarvalho, Cláudio Antonio Talge; Universidade Estadual Paulista. Institute of Science and Technology. Department of Restorative DentistryCarvalho, Cláudio Antonio Talge. São José dos Campos. BR
  • Martinho, Frederico Canato; University of Maryland School of Dentistry. Baltimore. US
  • Department of Restorative DentistryBresciani, Eduardo; Universidade Estadual Paulista. Institute of Science and Technology. Department of Restorative DentistryBresciani, Eduardo. São José dos Campos. BR
  • Department of Restorative DentistryValera, Marcia Carneiro; Universidade Estadual Paulista. Institute of Science and Technology. Department of Restorative DentistryValera, Marcia Carneiro. São José dos Campos. BR
Braz. dent. j ; 30(3): 220-226, May-June 2019. tab, graf
Article in English | LILACS | ID: biblio-1011555
ABSTRACT
Abstract The present study aimed to compare the effectiveness of QMiX and 17% EDTA associated to passive ultrasonic irrigation (PUI) or manual agitation (MA) on the reduction of E. faecalis, E. coli and LPS from root canals. Forty single rooted human teeth were randomly divided into four groups (n=10), according to the final irrigation protocol EDTA+MA, QMiX+MA, EDTA+PUI, QMiX+PUI. Sample collections were obtained from the root canal content immediately before preparation (baseline-S1), after instrumentation (S2), after final irrigation protocol (S3) and 7 days after instrumentation and final irrigation (S4). The antimicrobial effectivity and on endotoxin content were analyzed by culture procedure (CFU/mL) and LAL assay (EU/mL), respectively. The results were statistically analyzed by Kruskal-Wallis and Friedman test (α=5%). QMiX+MA and QMiX+PUI reduced 100% of E. coli and E. faecalis bacteria and also prevented E. faecalisregrowth at S4. EDTA significantly reduced E. coli, but it was not effective in reducing E. faecalis. All protocols reduced EU/mL when compared to S1, however at S4 there was a significant reduction of EU/mL only in the QMiX+MA and QMiX+PUI groups in relation to S3 and S2, respectively. Final irrigation with QMiX associated with MA or PUI had superior antibacterial efficacy compared to EDTA, eliminating 100% of E. coli and E. faecalis strains. In addition, QMiX+PUI reduced 97.61% of the initial content of LPS.
RESUMO
Resumo O presente estudo objetivou comparar a eficácia do QMiX e do EDTA 17% associado à irrigação ultrassônica passiva (PUI) ou agitação manual (MA) na redução de E. faecalis, E. coli e LPS de canais radiculares. Quarenta dentes humanos unirradiculares foram divididos aleatoriamente em quatro grupos (n = 10), de acordo com o protocolo final de irrigação EDTA+MA, QMiX+MA, EDTA+PUI, QMiX+PUI. Coletas das amostras foram obtidas a partir do conteúdo do canal radicular imediatamente antes do preparo (inicial-S1), após a instrumentação (S2), após o protocolo final de irrigação (S3) e 7 dias após a instrumentação e irrigação final (S4). A eficácia antimicrobiana e o conteúdo de endotoxina foram analisados ​​por procedimento de cultura (UFC/mL) e ensaio LAL (EU/mL), respectivamente. Os resultados foram analisados estatisticamente pelo teste de Kruskal-Wallis e Friedman (α = 5%). QMiX+MA e QMiX+PUI reduziram 100% das bactérias E. coli e E. faecalis e também preveniram a recolonização de E. faecalis em S4. O EDTA reduziu significativamente E. coli, mas não foi eficaz na redução de E. faecalis. Todos os protocolos reduziram EU/mL quando comparados com S1, no entanto, no S4 houve uma redução significativa de EU/mL apenas nos grupos QMiX+MA e QMiX+PUI em relação a S3 e S2, respectivamente. A irrigação final com QMiX associada a MA ou PUI apresentou eficácia antibacteriana superior em relação ao EDTA, eliminando 100% das cepas de E. coli e E. faecalis. Além disso, QMiX+PUI reduziu 97,61% do conteúdo inicial de LPS.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Root Canal Irrigants / Dental Pulp Cavity Type of study: Controlled clinical trial / Practice guideline Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2019 Type: Article Affiliation country: Brazil / United States Institution/Affiliation country: Universidade Estadual Paulista/BR / University of Maryland School of Dentistry/US

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Full text: Available Index: LILACS (Americas) Main subject: Root Canal Irrigants / Dental Pulp Cavity Type of study: Controlled clinical trial / Practice guideline Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2019 Type: Article Affiliation country: Brazil / United States Institution/Affiliation country: Universidade Estadual Paulista/BR / University of Maryland School of Dentistry/US