A coupled laser scanning electron microscope system for investigating laser materials interactions

1974 ◽  
Vol 45 (7) ◽  
pp. 907-910 ◽  
Author(s):  
Thomas J. Magee ◽  
Peter Krehl ◽  
Kenneth Hirschberg ◽  
Jan Terry
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Laser Scanning ◽  
Laser Materials ◽  
Scanning Electron

scholarly journals Evaluation of two different root-end cavity preparation techniques: A scanning electron microscope study

2013 ◽  
Vol 07 (02) ◽  
pp. 186-190 ◽  
Author(s):  
Seda Aydemir ◽  
Hale Cimilli ◽  
Afife Binnaz Hazar Yoruç ◽  
Nevin Kartal
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Control Group ◽  
Laser Materials ◽  
Cavity Preparation ◽  
Scanning Electron Microscope Study ◽  
Yag Laser ◽  
Significant Difference ◽  
Laser Group ◽  
Scanning Electron

ABSTRACT Objective: In this study, we aimed to evaluate and compare the dentinal walls of root-end cavities for the presence of cracks after cavity preparation using US retrotips and Er: YAG laser. Materials and Methods: Fifty single-rooted teeth were prepared by Protaper NiTi rotary system and obturated by lateral condensation. Three milimeters of root-end was resected. Twenty teeth were prepared with US retrotip (Group 1), 20 teeth with Er: YAG laser (Group 2), and 10 teeth without retropreparation (control group). The root-end surfaces were examined under a scanning electron microscope (SEM). Then the cracks of the resected root surfaces were evaluated on microphotographs. Results: No statistically significant difference was detected between US Group and Laser Group for complete, incomplete, intradentinal, and total number of cracks (P = 0.47, P = 0.80, P = 0.69, P = 0.869, respectively). Conclusion: Statistical analysis revealed no significant effect of retropreparation technique on the development of apical cracks (P > 0.05).

The Alteration of the Pore Spaces in Sandstones

1973 ◽  
Vol 31 ◽  
pp. 210-211
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Coarse Grained ◽  
Depositional Fabric ◽  
Soluble Components ◽  
Scanning Electron ◽  
Shape And Size

The pore spaces in sandstones are the result of the original depositional fabric and the degree of post-depositional alteration that the rock has experienced. The largest pore volumes are present in coarse-grained, well-sorted materials with high sphericity. The chief mechanisms which alter the shape and size of the pores are precipitation of cementing agents and the dissolution of soluble components. Each process may operate alone or in combination with the other, or there may be several generations of cementation and solution.The scanning electron microscope has ‘been used in this study to reveal the morphology of the pore spaces in a variety of moderate porosity, orthoquartzites.

The Broad Applications of the Scanning Electron Microscope

1969 ◽  
Vol 27 ◽  
pp. 20-21
Author(s):  
C. T. Nightingale ◽  
S. E. Summers ◽  
T. P. Turnbull
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Light Microscopy ◽  
Surface Topography ◽  
Great Depth ◽  
Resolving Power ◽  
Depth Of Field ◽  
Pictorial Representations ◽  
Scanning Electron

The ease of operation of the scanning electron microscope has insured its wide application in medicine and industry. The micrographs are pictorial representations of surface topography obtained directly from the specimen. The need to replicate is eliminated. The great depth of field and the high resolving power provide far more information than light microscopy.

Sign in / Sign up

Export Citation Format

Share Document