Hernán Coaguila-Llerena1,2, Ronald Ordinola-Zapata2, Christopher Staley3, Matthew Dietz3, Ruoqiong Chen4, Gisele Faria1. 1. Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University -UNESP, São Paulo, Brazil. 2. Division of Endodontics, University of Minnesota School of Dentistry, Minneapolis, Minnesota, USA. 3. Division of Basic & Translational Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, USA. 4. Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minnesota, USA.
Abstract
AIM: The aim of the study was to assess biofilm removal efficacy of GentleWave System and passive ultrasonic irrigation (PUI). METHODOLOGY: Twenty-two human mandibular molars with Vertucci's type II configuration in the mesial root were selected. Teeth were autoclaved, inoculated with dental plaque and incubated in a CDC biofilm reactor for two weeks. The mesial roots were instrumented up to 20.06 file (V-Taper) for the GentleWave group and up to 35.04 file (Vortex Blue) for PUI group. Irrigation was performed using GentleWave and PUI irrigation protocols (n = 11). Dentine debris on paper points samples were obtained for quantitative real-time polymerase chain reaction (qPCR) and 16S ribosomal RNA gene sequencing (next-generation aequencing-NGS). For qPCR, a non-parametric test (α = 0.05) was used. Next-generation sequencing data were analysed using mothur, with alpha diversity calculated as the Shannon and Chao1 indices and Bray-Curtis dissimilarities were used for beta diversity. Differences in alpha diversity and abundances of genera were evaluated using Kruskal-Wallis test. Differences in community composition were evaluated using analysis of similarity with Bonferroni correction for multiple comparisons. RESULTS: Quantitative real-time polymerase chain reaction results showed that the reduction estimated in percentages for both groups was equivalent (p > .05). NGS analysis showed that both techniques promoted a significant reduction in reads and OTUs number (p < .05). Shannon alpha diversity and Chao1 index showed no differences between pre- or post-treatment samples for both groups (p > .05). Additionally, pre-treatment communities differed from post-treatment samples in both groups regarding bacterial taxa reduction (ANOSIM R = 0.50 and 0.55, p < .001). CONCLUSIONS: Bacterial reduction in mesial roots of mandibular molars prepared to 35.04 with PUI was similar to those prepared to 20.06 with a multisonic irrigant activation system.
AIM: The aim of the study was to assess biofilm removal efficacy of GentleWave System and passive ultrasonic irrigation (PUI). METHODOLOGY: Twenty-two human mandibular molars with Vertucci's type II configuration in the mesial root were selected. Teeth were autoclaved, inoculated with dental plaque and incubated in a CDC biofilm reactor for two weeks. The mesial roots were instrumented up to 20.06 file (V-Taper) for the GentleWave group and up to 35.04 file (Vortex Blue) for PUI group. Irrigation was performed using GentleWave and PUI irrigation protocols (n = 11). Dentine debris on paper points samples were obtained for quantitative real-time polymerase chain reaction (qPCR) and 16S ribosomal RNA gene sequencing (next-generation aequencing-NGS). For qPCR, a non-parametric test (α = 0.05) was used. Next-generation sequencing data were analysed using mothur, with alpha diversity calculated as the Shannon and Chao1 indices and Bray-Curtis dissimilarities were used for beta diversity. Differences in alpha diversity and abundances of genera were evaluated using Kruskal-Wallis test. Differences in community composition were evaluated using analysis of similarity with Bonferroni correction for multiple comparisons. RESULTS: Quantitative real-time polymerase chain reaction results showed that the reduction estimated in percentages for both groups was equivalent (p > .05). NGS analysis showed that both techniques promoted a significant reduction in reads and OTUs number (p < .05). Shannon alpha diversity and Chao1 index showed no differences between pre- or post-treatment samples for both groups (p > .05). Additionally, pre-treatment communities differed from post-treatment samples in both groups regarding bacterial taxa reduction (ANOSIM R = 0.50 and 0.55, p < .001). CONCLUSIONS: Bacterial reduction in mesial roots of mandibular molars prepared to 35.04 with PUI was similar to those prepared to 20.06 with a multisonic irrigant activation system.
Authors: J C Venter; M D Adams; E W Myers; P W Li; R J Mural; G G Sutton; H O Smith; M Yandell; C A Evans; R A Holt; J D Gocayne; P Amanatides; R M Ballew; D H Huson; J R Wortman; Q Zhang; C D Kodira; X H Zheng; L Chen; M Skupski; G Subramanian; P D Thomas; J Zhang; G L Gabor Miklos; C Nelson; S Broder; A G Clark; J Nadeau; V A McKusick; N Zinder; A J Levine; R J Roberts; M Simon; C Slayman; M Hunkapiller; R Bolanos; A Delcher; I Dew; D Fasulo; M Flanigan; L Florea; A Halpern; S Hannenhalli; S Kravitz; S Levy; C Mobarry; K Reinert; K Remington; J Abu-Threideh; E Beasley; K Biddick; V Bonazzi; R Brandon; M Cargill; I Chandramouliswaran; R Charlab; K Chaturvedi; Z Deng; V Di Francesco; P Dunn; K Eilbeck; C Evangelista; A E Gabrielian; W Gan; W Ge; F Gong; Z Gu; P Guan; T J Heiman; M E Higgins; R R Ji; Z Ke; K A Ketchum; Z Lai; Y Lei; Z Li; J Li; Y Liang; X Lin; F Lu; G V Merkulov; N Milshina; H M Moore; A K Naik; V A Narayan; B Neelam; D Nusskern; D B Rusch; S Salzberg; W Shao; B Shue; J Sun; Z Wang; A Wang; X Wang; J Wang; M Wei; R Wides; C Xiao; C Yan; A Yao; J Ye; M Zhan; W Zhang; H Zhang; Q Zhao; L Zheng; F Zhong; W Zhong; S Zhu; S Zhao; D Gilbert; S Baumhueter; G Spier; C Carter; A Cravchik; T Woodage; F Ali; H An; A Awe; D Baldwin; H Baden; M Barnstead; I Barrow; K Beeson; D Busam; A Carver; A Center; M L Cheng; L Curry; S Danaher; L Davenport; R Desilets; S Dietz; K Dodson; L Doup; S Ferriera; N Garg; A Gluecksmann; B Hart; J Haynes; C Haynes; C Heiner; S Hladun; D Hostin; J Houck; T Howland; C Ibegwam; J Johnson; F Kalush; L Kline; S Koduru; A Love; F Mann; D May; S McCawley; T McIntosh; I McMullen; M Moy; L Moy; B Murphy; K Nelson; C Pfannkoch; E Pratts; V Puri; H Qureshi; M Reardon; R Rodriguez; Y H Rogers; D Romblad; B Ruhfel; R Scott; C Sitter; M Smallwood; E Stewart; R Strong; E Suh; R Thomas; N N Tint; S Tse; C Vech; G Wang; J Wetter; S Williams; M Williams; S Windsor; E Winn-Deen; K Wolfe; J Zaveri; K Zaveri; J F Abril; R Guigó; M J Campbell; K V Sjolander; B Karlak; A Kejariwal; H Mi; B Lazareva; T Hatton; A Narechania; K Diemer; A Muruganujan; N Guo; S Sato; V Bafna; S Istrail; R Lippert; R Schwartz; B Walenz; S Yooseph; D Allen; A Basu; J Baxendale; L Blick; M Caminha; J Carnes-Stine; P Caulk; Y H Chiang; M Coyne; C Dahlke; A Deslattes Mays; M Dombroski; M Donnelly; D Ely; S Esparham; C Fosler; H Gire; S Glanowski; K Glasser; A Glodek; M Gorokhov; K Graham; B Gropman; M Harris; J Heil; S Henderson; J Hoover; D Jennings; C Jordan; J Jordan; J Kasha; L Kagan; C Kraft; A Levitsky; M Lewis; X Liu; J Lopez; D Ma; W Majoros; J McDaniel; S Murphy; M Newman; T Nguyen; N Nguyen; M Nodell; S Pan; J Peck; M Peterson; W Rowe; R Sanders; J Scott; M Simpson; T Smith; A Sprague; T Stockwell; R Turner; E Venter; M Wang; M Wen; D Wu; M Wu; A Xia; A Zandieh; X Zhu Journal: Science Date: 2001-02-16 Impact factor: 47.728