scholarly journals The effect of the blue light diode laser on shear-peel bond strength of orthodontic brackets with varying curing time and distance.

2010 ◽  
Author(s):  
Kamran Shaikh
2021 ◽  
Vol 14 (4) ◽  
pp. 1871-1876
Author(s):  
M.T. Maliael

This study was designed with the aim to evaluate the effect of curing time on the shear-bond strength of orthodontic brackets bonded using light cure Resin-Modified Glass Ionomer Cements (RMGIC). This class of cement when used for luting orthodontic brackets offers certain advantages when compared to the more commonly used resin cements. Intact natural teeth (premolars) extracted for therapeutic purposes as part of orthodontic treatment was sourced for use in this study. The teeth were equally divided into four groups four testing, Group 1 - brackets bonded with RMGIC and cured for 3 seconds, Group 2 - brackets bonded RMGIC and cured for 6 seconds, Group 3 - brackets bonded with RMGIC and cured for 9 seconds and Control group - brackets bonded with composite and cured for 15 seconds. A high intensity LED light source was used to cure the cements. The Shear-Bond strength of the brackets was evaluated using a universal testing machine. One-way ANOVA test and Tukey multiple comparison tests were done to compare the difference of Shear-Bond Strengths among the groups tested. The average Shear Bond Strength among study groups was 7.64±2.86 MPa. The ANOVA and Tukey multiple comparison tests could not identify a statistically significant difference in Shear-Bond Strengths among the groups. Curing time does not appear to have a statistically significant effect on the Shear Bond Strength of orthodontic brackets bonded using Resin-Modified Glass Ionomer Cements..


2017 ◽  
Vol 32 (3) ◽  
pp. 703-709 ◽  
Author(s):  
Dimitrios Dionysopoulos ◽  
Kosmas Tolidis ◽  
Dimitrios Strakas ◽  
Paris Gerasimou ◽  
Thrasyvoulos Sfeikos ◽  
...  

2019 ◽  
Vol 53 (1) ◽  
pp. 17-27 ◽  
Author(s):  
Blerim Mehmeti ◽  
Jeta Kelmendi ◽  
Donika Iiljazi-Shahiqi ◽  
Bleron Azizi ◽  
Suzana Jakovljevic ◽  
...  

2020 ◽  
Vol 38 (3) ◽  
pp. 160-166 ◽  
Author(s):  
Thomas Knaup ◽  
Heike Korbmacher-Steiner ◽  
Andreas Braun ◽  
Johannes-Simon Wenzler ◽  
Isabel Knaup ◽  
...  

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 757 ◽  
Author(s):  
Kim ◽  
Hong ◽  
Han ◽  
Kim

In this study, coating equipment for the effective underwater repair of submerged structures was developed. The tensile bond characteristics of selected epoxy resin coatings were investigated by coating the surface of a specimen using each of the four types of equipment. Using the experimental results, the tensile bond strength and the coating thickness were analyzed according to the type of equipment, coating, and curing time. The results show that the type of coating equipment used had the greatest effect on the measured bond strength and coating thickness of the selected coatings. However, the effect of coating type and curing time on the bond strength and the thickness was observed to be insignificant. Compared with the developed equipment, the surface treatment of the coating was observed to be more effective when using the pre-existing equipment, and thus the bond performance of the coating was improved compared to using the pre-existing equipment. Based on the experimental results, improvements and needs involving the equipment for further research were discussed.


2008 ◽  
Vol 41 (9) ◽  
pp. 733-740 ◽  
Author(s):  
E. Alfredo ◽  
S. R. C. Silva ◽  
J. E. V. Ozório ◽  
M. D. Sousa-Neto ◽  
A. Brugnera-Júnior ◽  
...  
Keyword(s):  

2014 ◽  
Vol 85 (4) ◽  
pp. 645-650 ◽  
Author(s):  
Laura Mews ◽  
Matthias Kern ◽  
Robert Ciesielski ◽  
Helge Fischer-Brandies ◽  
Bernd Koos

ABSTRACT Objective:  To examine differences in the shear bond strength of orthodontic brackets on differently mineralized enamel surfaces after applying a caries infiltrant or conventional adhesive. Materials and Methods:  A total of 320 bovine incisors were assigned to eight pretreated groups, and the shear force required for debonding was recorded. Residual adhesive was evaluated by light microscopy using the adhesive remnant index. Statistical analysis included Kolmogorov-Smirnov, analysis of variance (ANOVA), and Scheffé tests. Results:  The highest bond strength (18.8 ± 4.4 MPa) was obtained after use of the caries infiltrant. More residual adhesive and fewer enamel defects were observed on infiltrated enamel surfaces. Brackets on demineralized enamel produced multiple enamel defects. Conclusions:  Acceptable bond strengths were obtained with all material combinations. A caries-infiltrant applied before bracket fixation has a protective effect, especially on demineralized enamel.


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