Mostrar el registro sencillo del ítem

dc.contributor.authorCosta, Débora Delaipt_BR
dc.contributor.authorBoijink, Daianapt_BR
dc.contributor.authorHoppe, Carolina Benderpt_BR
dc.contributor.authorGrecca, Fabiana Soarespt_BR
dc.contributor.authorKopper, Patrícia Maria Polipt_BR
dc.date.accessioned2018-07-28T02:46:08Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn0103-6440pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/180713pt_BR
dc.description.abstractThe aim of this study was to assess the amount of apically extruded debris during filling removal with WaveOne Gold (WOG), ProTaper Universal Retreatment (PTR), D-RaCe Retreatment (DRR) or hand files (HF), to compare the working time during filling removal, and to describe failures of NiTi instruments. Forty mesiobuccal roots of maxillary first molars were prepared with WOG Primary, obturated and divided into 4 groups (n=10), according to the instruments used: WOG, PTR, DRR or HF. Distilled water was used as irrigant and the extruded debris were collected in Eppendorf tubes and dried. The amount of extruded debris was determined by subtracting the final from the initial weight. The time of filling removal for each canal was recorded and the instruments used were analyzed pre and post-operatively by SEM. Kruskal-Wallis and Dunn’s test analyzed extruded debris data and ANOVA, followed by Tukey’s test, compared the working time data (α=0.05). Instrument deformation and fracture were described. WOG produced significantly less debris compared with HF and DRR (p<0.05), and similar to PTR (p>0.05). HF, PTR and DRR showed no significant difference (p>0.05). Working time in HF group was significantly higher than others (p<0.05). SEM analyses showed, from the 18 instruments evaluated, 3 fractures and 10 deformations. All instruments tested caused debris extrusion. WOG was associated with less extrusion than DRR and HF. Filling removal with HF was slower than with the other instruments. All NiTi systems presented fracture and deformation.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofBrazilian dental journal. Ribeirão Preto. Vol. 29, no. 1 (2018), p. 54-59pt_BR
dc.rightsOpen Accessen
dc.subjectApical extrusionen
dc.subjectInstrumentos odontológicospt_BR
dc.subjectDebrisen
dc.subjectInstrumentationen
dc.subjectReciprocating movementen
dc.subjectSingle-file systemsen
dc.titleApically extruded debris in filling removal of curved canals using 3 NiTi systems and hand filespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001066744pt_BR
dc.type.originNacionalpt_BR


Ficheros en el ítem

Thumbnail
   

Este ítem está licenciado en la Creative Commons License

Mostrar el registro sencillo del ítem