scholarly journals A scanning electron microscope evaluation of smear layer removal from root canals prepared by manual or rotary instrumentation using three different irrigating systems: An in vitro study

Endodontology ◽  
2016 ◽  
Vol 28 (2) ◽  
pp. 171
Author(s):  
SimranPal Singh Bindra ◽  
Ajay Chhabra ◽  
Damanpreet ◽  
Nisha Garg ◽  
Varun Jindal ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
In Vitro Study ◽  
Smear Layer ◽  
Vitro Study ◽  
Layer Removal ◽  
Root Canals ◽  
Scanning Electron

scholarly journals An in vitro Study to Compare the Effectiveness of F-file with Ultrasonically Activated K-file to Remove Smear Layer by using a Scanning Electron Microscope

2013 ◽  
Vol 14 (5) ◽  
pp. 825-829 ◽  
Author(s):  
B Shiva Kumar ◽  
Suresh Shenvi
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
In Vitro Study ◽  
Smear Layer ◽  
Setup Cost ◽  
Chi Square ◽  
Layer Removal ◽  
Significant Difference ◽  
Scanning Electron

ABSTRACT Aim The aim of this study was to compare the effectiveness of the F-file with an ultrasonically activated #15 K-file in removing the smear layer after biomechanical instrumentation along with irrigation of Saline, NaOCl and with or without a flush of EDTA. Materials and methods Sixty decoronated human premolar teeth with a single canal were instrumented with ProTaper using S1, S2 and F1 series to produce the smear layer and randomly divided into two groups. Group A used Ultrasonics and group B used F-file for activation of irrigants respectively. Each group was further divided in to three subgroups consisting of 10 teeth in each as I, II, III consisting of saline, NaOCl, NaOCl and EDTA as irrigants respectively. SEM micrographs were taken and amount of smear layer removal was analyzed by using Chi-square statistics tests. Results Most effective smear layer removal was seen only when EDTA was used. There was no statistically significant difference between the groups A and B in removal of smear layer. Conclusion There was no increase in smear layer between use of F-file when compared with the Ultrasonically activated K-file. Clinical significance The F-file although does not have a superior efficacy than the ultrasonics in removal of smear layer from root canals but when used along with EDTA, can be an effective alternative for the dentists who are unable to bear the initial setup cost of ultrasonics. How to cite this article Shenvi S, Kumar BS. An in vitro Study to Compare the Effectiveness of F-file with Ultrasonically Activated K-file to Remove Smear Layer by using a Scanning Electron Microscope. J Contemp Dent Pract 2013;14(5):825-829.

scholarly journals Scanning Electron Microscope Evaluation of Smear Layer Removal at the Coronal, Middle, and Apical Third of Root Canals using Er,Cr:YSGG Laser: An in vitro Study

2017 ◽  
Vol 2 (1) ◽  
pp. 11-14
Author(s):  
Rajasekaran M ◽  
Shankar Narayan Gopal ◽  
Indra R ◽  
Ramachandran S
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Root Canal ◽  
Laser System ◽  
Smear Layer ◽  
Layer Removal ◽  
Root Canals ◽  
Group I ◽  
Scanning Electron

ABSTRACT The aim of the study was to analyse the smear layer removal at the coronal,middle and apical third of the root canals by using Er, Cr; YSGG laser system equipped with conical tip of 300 μm. A total of 80 single rooted extracted human mandibular premolars were endodontically prepared with rotary instrumentation and irrigated with 5.25% sodium hypochlorite and were randomly divided in to four groups (20 tooth each). GROUP I: Served as control (non lased group), in which root canal were irrigated with 17% EDTA .GROUP II : 17% EDTA irrigant activated by laser with conical fibre tip at the coronal region .GROUP III: 17% EDTA irrigant activated by laser with conical fibre tip at the middle region.GROUP IV: 17% EDTA irrigant activated by laser with conical fibre tip at the apex region. The results showed complete smear layer removal at the coronal and middle region when compared to apical third of the root canal system. How to cite this article Murugesan S, Rajasekaran M, Baskaran VA, Gopal SN, Indra R, Ramachandran S. Scanning Electron Microscope Evaluation of Smear Layer Removal at the Coronal, Middle, and Apical Third of Root Canals using Er,Cr:YSGG Laser: An in vitro Study. J Oper Dent Endod 2017;2(1):11-14.

Influence of prophylaxis on the microleakage of sealants: in vitro study

2002 ◽  
Vol 26 (4) ◽  
pp. 371-375 ◽  
Author(s):  
Ana Beatriz Alonso Chevitarese ◽  
Orlando Chevitarese ◽  
Ivete Pomarico Ribeiro de Souza ◽  
Roberto Braga de Carvalho Vianna
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
In Vitro Study ◽  
Optical Microscope ◽  
Vitro Study ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Scanning Electron

The aim of this study was to evaluate the influence of prophylaxis on the sealants microleakage in 30 premolars divided into: Group A, Group B and Group C. The teeth were analyzed using the optical microscope (OM) and at scanning electron microscope (SEM). There was a statitical significant difference among the groups regarding the presence of microleakage, but not with the presence of tags.

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