scholarly journals Effect of Different Burs on the Topography of Smear Layer Formation on the Dentinal Surface: A Scanning Electron Microscope Study

2014 ◽  
Vol 15 (2) ◽  
pp. 161-164 ◽  
Author(s):  
Pooja Trivedi ◽  
Moulshree Dube ◽  
Mihir Pandya ◽  
Hitesh Sonigra ◽  
Kiran Vachhani ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Microscope Study ◽  
Electron Microscope Study ◽  
Smear Layer ◽  
Layer Formation ◽  
Hybrid Layer ◽  
Scanning Electron Microscope Study ◽  
Scanning Electron

ABSTRACT Whenever a hand or a rotary instrument is used to eliminate tooth tissue, the mineralized matrix shatters rather then being uniformly sheared, producing considerably quantities of cutting debris. Much of the debris made up of very small particles of mineralized collagen matrix over the surface of dentin is known as smear layer. The clinical outcome of dental restorations is dependent upon the surface preparations, smear layer formation and hybrid layer which which provides a stable adhesion. Different surface morphology is produced by use of different burs. The thickness of the smear layer is affected by various factors as type of the bur, use of water spray and speed of rotation. Bonding is enhanced when smear layer is completely removed or modified. The purpose of this in vitro study is to evaluate the effect of different burs on the topography of the smear layer formation and thickness on dentinal surface. How to cite this article Trivedi P, Dube M, Pandya M, Sonigra H, Vachhani K, Attur K. Effect of Different Burs on the Topography of Smear Layer Formation on the Dentinal Surface: A Scanning Electron Microscope Study. J Contemp Dent Pract 2014;15(2):161-164.

scholarly journals Effectiveness of Three Different Application Times of 17% EDTA and 7% Maleic Acid Irrigation Agents on the Removal of Debris and Smear Layer: A Scanning Electron Microscope Study

2011 ◽  
Vol 1 (2) ◽  
pp. 48
Author(s):  
Sadullah Kaya ◽  
Özkan Adıgüzel ◽  
İbrahim Uysal ◽  
Selengül Ganidağlı Ayaz
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Maleic Acid ◽  
Microscope Study ◽  
Electron Microscope Study ◽  
Smear Layer ◽  
Scanning Electron Microscope Study ◽  
Acid Irrigation ◽  
Debris Removal ◽  
Scanning Electron

Aim: This study compared smear-layer and debris removal using with three different application times of 17% EDTA and 7% maleic acid irrigation agents. Methodology: Fifty-two maxillary and mandibular single-rooted teeth were divided randomly into seven groups (n = 8 each, control group n = 4). Three groups received 17% EDTA and three received maleic acid (1, 5, 10 min). Canals were prepared using nickel-titanium rotary files. Smear-layer and debris removal were evaluated in the coronal, middle, and apical thirds of the teeth using scanning electron microscopy, and results were analyzed compared using Mann–Whitney U tests. Results: Maleic acid removed the smear layer (coronal and middle: p<0.01; apical: p<0.05) and debris (all p< 0.05) more effectively than EDTA in terms of 1 min application period. Effectiveness did not differ significantly with 10-min applications. Conclusions: Final irrigation with 7% maleic acid is more efficient than 17%EDTA in the removal of smear layer and debris from the coronal, middle and apical third of the root canal system in application within 1 min.  How to cite this article: Kaya S, Adıgüzel Ö, Ganidağlı Ayaz S. Effectiveness of Three Different Application Times of 17% EDTA and 7% Maleic Acid Irrigation Agents on the Removal of Debris and Smear Layer: A Scanning Electron Microscope Study. Int Dent Res 2011;2:48-54. Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

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