scholarly journals Assessment of the Bond Strength and Mode of Failure of Glass Fibre Posts Luted using Two Different Adhesives: An In Vitro Analysis

2018 ◽  
Vol 3 (2) ◽  
pp. 57-62
Author(s):  
Iswariya Rajan ◽  
Vaiyapuri Ravi ◽  
Arthanarieswaran A Sivakumar ◽  
Jambai SK Sivakumar ◽  
Anjaneya S Prasad ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fibre ◽  
Mode Of Failure ◽  
Vitro Analysis ◽  
Glass Fibre Posts ◽  
In Vitro Analysis

scholarly journals In vitro analysis of shear bond strength and adhesive remnant index of different metal brackets

2016 ◽  
Vol 21 (6) ◽  
pp. 67-73 ◽  
Author(s):  
Fernanda de Souza Henkin ◽  
Érika de Oliveira Dias de Macêdo ◽  
Karoline da Silva Santos ◽  
Marília Schwarzbach ◽  
Susana Maria Werner Samuel ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Fold Increase ◽  
Optical Microscope ◽  
General Evaluation ◽  
Adhesive Remnant Index ◽  
The One ◽  
Vitro Analysis ◽  
In Vitro Analysis

ABSTRACT Introduction: There is a great variety of orthodontic brackets in the Brazilian market, and constantly evaluating them is critical for professionals to know their properties, so as to be able to choose which product best suits their clinical practice. Objectives: To evaluate the bond strength and the adhesive remnant index (ARI) of different brands of metal brackets. Material and Methods: A total of 105 bovine incisors were used, and brackets of different brands were bonded to teeth. Seven different bracket brands were tested (MorelliTM, American OrthodonticsTM, TP OrthodonticsTM, Abzil-3MTM, OrthometricTM, TecnidentTM and UNIDENTM). Twenty-four hours after bonding, shear bond strength test was performed; and after debonding, the ARI was determined by using an optical microscope at a 10-fold increase. Results: Mean shear bond strength values ranged from 3.845 ± 3.997 (MorelliTM) to 9.871 ± 5.106 MPa (TecnidentTM). The majority of the ARI index scores was 0 and 1. Conclusion: Among the evaluated brackets, the one with the lowest mean shear bond strength values was MorelliTM. General evaluation of groups indicated that a greater number of bond failure occurred at the enamel/adhesive interface.

scholarly journals An in-vitro analysis of shear bond strength of resin based luting cements to lithium disilicate glass ceramic

2019 ◽  
Vol 5 (2) ◽  
pp. 23-27
Author(s):  
K Premnath ◽  
◽  
Nagaranjani Prakash ◽  
Mohammed Ajmal B ◽  
Syed Ahmed Raheel ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Ceramic ◽  
Shear Bond Strength ◽  
Lithium Disilicate ◽  
Luting Cements ◽  
Vitro Analysis ◽  
In Vitro Analysis

Influence of endodontic irrigants on bond strength between glass-fibre posts and dentin: A systematic review of in vitro studies

2020 ◽  
Vol 102 ◽  
pp. 102685
Author(s):  
Paula Alejandra Baldion ◽  
Diego Enrique Betancourt ◽  
Diana Marcela Gutierrez ◽  
Edgar Orlando Beltran ◽  
Gloria Ines Lafaurie ◽  
...  
Keyword(s):  
Systematic Review ◽  
Bond Strength ◽  
Glass Fibre ◽  
In Vitro Studies ◽  
Glass Fibre Posts

scholarly journals In vitro analysis of femtosecond laser as an alternative to acid etching for achieving suitable bond strength of brackets to human enamel

2013 ◽  
Vol 29 (3) ◽  
pp. 897-905 ◽  
Author(s):  
M. C. Lorenzo ◽  
M. Portillo ◽  
P. Moreno ◽  
J. Montero ◽  
R. Castillo-Oyagüe ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Bond Strength ◽  
Acid Etching ◽  
Human Enamel ◽  
Vitro Analysis ◽  
In Vitro Analysis

The native structure of the eukaryotic ribosome

1983 ◽  
Vol 41 ◽  
pp. 432-433
Author(s):  
R.A. Milligan ◽  
P.N.T. Unwin
Keyword(s):  
Ribosomal Proteins ◽  
Crystal Form ◽  
Native Structure ◽  
X Ray Diffraction ◽  
Eukaryotic Ribosome ◽  
Vitro Analysis ◽  
In Vitro Analysis ◽  
Resolution Structure ◽  
Stable Unit

A detailed understanding of the mechanism of protein synthesis will ultimately depend on knowledge of the native structure of the ribosome. Towards this end we have investigated the low resolution structure of the eukaryotic ribosome embedded in frozen buffer, making use of a system in which the ribosomes crystallize naturally.The ribosomes in the cells of early chicken embryos form crystalline arrays when the embryos are cooled at 4°C. We have developed methods to isolate the stable unit of these arrays, the ribosome tetramer, and have determined conditions for the growth of two-dimensional crystals in vitro, Analysis of the proteins in the crystals by 2-D gel electrophoresis demonstrates the presence of all ribosomal proteins normally found in polysomes. There are in addition, four proteins which may facilitate crystallization. The crystals are built from two oppositely facing P4 layers and the predominant crystal form, accounting for >80% of the crystals, has the tetragonal space group P4212, X-ray diffraction of crystal pellets demonstrates that crystalline order extends to ~ 60Å.

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