10.6084/m9.figshare.5669317.v1
Mariana Mena Barreto Bastos
Mariana Mena Barreto
Bastos
Aida Rene Assayag Hanan
Aida Rene Assayag
Hanan
Ana Mena Barreto Bastos
Ana Mena Barreto
Bastos
André Augusto Franco Marques
André Augusto Franco
Marques
Lucas da Fonseca Roberti Garcia
Lucas da Fonseca Roberti
Garcia
Emílio Carlos Sponchiado Júnior
Emílio Carlos
Sponchiado Júnior
Topographic and Chemical Analysis of Reciprocating and Rotary Instruments Surface after Continuous Use
SciELO journals
2017
endodontics
root canal preparation
reciprocating motion
chemical analysis.
2017-12-05 10:04:47
Dataset
https://scielo.figshare.com/articles/dataset/Topographic_and_Chemical_Analysis_of_Reciprocating_and_Rotary_Instruments_Surface_after_Continuous_Use/5669317
<div><p>Abstract This study aimed at evaluating the changes in surface characteristics and NiTi content of reciprocating and rotary instruments after continuous use. Thirty brand-new instruments were assigned to 3 groups (n=10): PNX1 Group - ProTaper Next system - instrument X1; PNX2 Group - ProTaper Next system - instrument X2 and WO Group - WaveOne system - Primary instrument 25.08. The instruments were used to prepare 60 simulated root canals. Analysis of surface characteristics by scanning electron microscopy (SEM) and chemical analysis of Ni and Ti content by energy-dispersive spectroscopy (EDS) were performed before and after the first and third use of the instruments. Only WO Group had significant increase in the quantity of defects and deformations after the third use (p<0.05). PNX1 Group had significant decrease in Ni content after the third use, in comparison with the unused instruments (p<0.05). PNX1 Group had no decrease in Ti content throughout the time of use (p>0.05), however, in PNX2 Group, there was significant decrease in the different time interval of analysis (p<0.05). Continuous use promoted increase in defects and deformations only for WaveOne instruments. Chemical composition presented significant changes according to the time of instruments use.</p></div>