scholarly journals Evaluation of Tooth Surface Characteristics after Application of Intrusive Orthodontic Forces Using Scanning Electron Microscope: An In vivo Study

2019 ◽  
Vol 53 (1) ◽  
pp. 27-37
Author(s):  
Gauravdeep Kaur ◽  
Maninder Singh Sidhu ◽  
Seema Grover ◽  
Ashish Dabas ◽  
Namrata Dogra
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Characteristics ◽  
In Vivo Study ◽  
Tooth Surface ◽  
Orthodontic Forces ◽  
Scanning Electron

scholarly journals Evaluating the Surface Characteristics of Stainless Steel, TMA, Timolium, and Titanium-niobium Wires: An in vivo Scanning Electron Microscope Study

2016 ◽  
Vol 17 (5) ◽  
pp. 372-376 ◽  
Author(s):  
A Laxmi Prasanna ◽  
K Pradeep Babu ◽  
V Naga Keerthi ◽  
Deepika Madathody ◽  
Vidhya Gopinath ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Electron Microscope Study ◽  
Steel Wire ◽  
Surface Characteristics ◽  
Scanning Electron Microscope Study ◽  
Scanning Electron ◽  
Group 1

ABSTRACT Background Recent metallurgical research and advancement in material science has benefited orthodontists in the selection of an appropriate wire size and alloy type, which is necessary to provide an optimum and predictable treatment results. The purpose of the study was to clinically evaluate and compare the surface characteristics of 16 × 22 stainless steel, Titanium molybdenum alloy, timolium, and titanium-niobium before and after placing them in a patient's mouth for 3 months using a scanning electron microscope (SEM). Materials and methods The total sample size was 40, which were divided into four groups (group 1 – stainless steel wires, 10 samples, group 2 – TMA wires, 10 samples, group 3 – timolium wires, 10 samples, and group 4 – titanium-niobium wires, 10 samples), and these were further subdivided into 5 each. The first subgroup of five samples was placed in the patient's mouth and was evaluated under SEM, and another subgroup of five samples was directly subjected to the SEM. Results Scanning electron microscopic evaluation of surface characteristics of unused 16 × 22 rectangular stainless steel wire under 500 × magnification showed an overall smooth surface. Stainless steel wire samples placed in the patient's mouth showed black hazy patches, which may be interoperated as areas of stress. TMA unused wires showed multiple small voids of areas and small craters with fewer elevated regions. The TMA wire samples placed in the patient's mouth showed black hazy patches and prominent ridges, making the wire rougher. Timolium unused archwires showed heavy roughness and voids, whereas wires tested in the patient's mouth showed homogeneous distribution of deep cracks and craters. Unused titanium-niobium archwires showed uniform prominent striations and ridges with occasional voids, whereas wires used in the patient's mouth showed prominent huge voids that could be interpreted as maximum stress areas. Conclusion Stainless steel (group 1) used and unused wires showed smooth surface characteristics when compared with all the other three groups followed by timolium, which was superior to titanium-niobium wires and TMA wires. Clinical significance Timolium wires are superior to titaniumniobium wires and TMA wires. How to cite this article Babu KP, Keerthi VN, Madathody D, Prasanna AL, Gopinath V, Kumar MS, Kumar AN. Evaluating the Surface Characteristics of Stainless Steel, TMA, Timolium, and Titanium-niobium Wires: An in vivo Scanning Electron Microscope Study. J Contemp Dent Pract 2016;17(5):372-376.

Cypsela morphology of Cirsium sect. Cirsium (Asteraceae) taxa in Turkey

Biologia ◽  
2011 ◽  
Vol 66 (6) ◽  
Author(s):  
Serkan Köstekci ◽  
Turan Arabaci
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Characteristics ◽  
Taxonomic Significance ◽  
Sem Investigation ◽  
Scanning Electron

AbstractIn this study, the cypsela morphology of 21 (14 species) of the 28 (17 species) Turkish Cirsium Mill. sect. Cirsium (Asteraceae) taxa was examined by stereomicroscope and scanning electron microscope (SEM). The shapes of cypselas are oblong, obovate, narrowly obovate and oblanceolate. The taxa were divided into 7 main types according to the results of SEM investigation on cypsela surface characteristics as: scalariform, ribbed, scrobiculate-ribbed, scrobiculate, scrobiculate-reticulate, reticulate and bireticulate. Taxonomic significance of cypsela morphology is discussed. It is shown that cypsela features can be used as distinguishing characteristics in some Cirsium sect. Cirsium species.

An assessment of anterior restorations in vivo using the scanning electron microscope. Results after one year

BDJ ◽  
1974 ◽  
Vol 137 (12) ◽  
pp. 463-471 ◽  
Author(s):  
W M Tay ◽  
I M Waite ◽  
G A Morrant ◽  
H R Borlace ◽  
F W Bultitude
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
One Year ◽  
Scanning Electron

scholarly journals The Effect of Fly Ash on Some Surface Characteristics and Microstructure of β-C2S

1997 ◽  
Vol 15 (6) ◽  
pp. 407-417
Author(s):  
Kh.A. Khalil ◽  
A.A. Amer
Keyword(s):  
Electron Microscope ◽  
Fly Ash ◽  
Scanning Electron Microscope ◽  
Specific Surface ◽  
Surface Area ◽  
Nitrogen Adsorption ◽  
Surface Characteristics ◽  
Ash Content ◽  
Sem Investigation ◽  
Scanning Electron

The effect of the addition of fly ash (0–15 wt. %) on the surface characteristics of β-C2S and its microstructure was investigated using nitrogen adsorption at −196°C together with scanning electron microscope (SEM) techniques. The results obtained revealed that the addition of fly ash up to 5 wt. % increased the specific surface area by 32% followed by a decrease of 34% when the fly ash content was increased up to 15 wt. %. SEM investigation showed that the hydrates produced form an outer shell which coats the fly ash particles.

Sign in / Sign up

Export Citation Format

Share Document