scholarly journals Laboratory evaluation of shear bond strength of three different bonding systems for orthodontic brackets

2018 ◽  
Vol 53 (6) ◽  
pp. 55-60 ◽  
Author(s):  
Ahmed Elkalza ◽  
Dawlat Mostafa
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Orthodontic Brackets ◽  
Laboratory Evaluation ◽  
Bonding Systems

Comparison in Shear Bond Strength of Orthodontic Brackets between Biofix and Conventional Bonding Systems: An in vitro Study

2014 ◽  
Vol 48 (4_suppl3) ◽  
pp. 461-465
Author(s):  
Ajith Rajasekharan Pillai ◽  
Anil Gangadharan ◽  
Satheesh Kumar ◽  
Jithin Gangadharan
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
In Vitro Study ◽  
Vitro Study ◽  
Orthodontic Brackets ◽  
Bonding Systems

scholarly journals Factors Affecting the Shear Bond Strength of Orthodontic Brackets – a Review of In Vitro Studies

2015 ◽  
Vol 58 (2) ◽  
pp. 43-48 ◽  
Author(s):  
Waleed Bakhadher ◽  
Hassan Halawany ◽  
Nabeel Talic ◽  
Nimmi Abraham ◽  
Vimal Jacob
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Positive Influence ◽  
Orthodontic Brackets ◽  
Factors Affecting ◽  
Bonding System ◽  
Ceramic Brackets ◽  
Bonding Systems

The adhesive material used to bond orthodontic brackets to teeth should neither fail during the treatment period, resulting in treatment delays, untoward expenses or patient inconvenience nor should it damage the enamel on debonding at the end of the treatment. Although the effectiveness of a bonding system and any unfavorable effects on the enamel may be studied by conductingin-vivostudies, it is nearly impossible to independently analyze different variables that influence a specific bonding system in the oral environment.In-vitrostudies, on the other hand, may utilize more standardized protocols for testing different bonding systems and materials available. Thus, the present review focused attention onin-vitrostudies and made an attempt to discuss material-related, teeth-related (fluorotic vs non-fluorotic teeth) and other miscellaneous factors that influences the shear bond strength of orthodontic brackets. Within the limitations of this review, using conventional acid-etch technique, ceramic brackets and bonding to non-fluorotic teeth was reported to have a positive influence on the shear bond strength of orthodontic brackets, but higher shear bond strength found on using ceramic brackets can be dangerous for the enamel.

scholarly journals Effect of Cyclic Loading on Shear Bond Strength of Orthodontic Brackets: An In Vitro Study

2019 ◽  
Author(s):  
Mohammad Moslem Imani ◽  
Farzaneh Aghajani ◽  
Nafiseh Momeni ◽  
Mohammad Sadegh Ahmad Akhoundi
Keyword(s):  
Cyclic Loading ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Orthodontic Brackets ◽  
Bonding System ◽  
Significant Difference ◽  
Bonding Systems ◽  
Self Etch

Objectives: In clinical conditions, orthodontic brackets are exposed to periodic stresses mainly induced by mastication and intraoral forces. The objective of the present study was to evaluate the effects of cyclic loading to simulate masticatory forces on shear bond strength (SBS) of metal brackets bonded to teeth using self-etch and total-etch bonding systems. Materials and Methods: Eighty-four caries- and crack-free bovine mandibular incisors were selected and randomly assigned to two groups based on the type of bonding system. After bonding, all samples were thermocycled (500 cycles) followed by cyclic loading of the half of the specimens in each group by applying 40 N load with 2 Hz frequency for 10,000 cycles. The SBS was measured using a universal testing machine. The adhesive remnant index (ARI) score was calculated subsequently. Data were analyzed using Kolmogorov-Smirnov test, two-way ANOVA and Mann-Whitney test. Results: The SBS was 10.09±3.78 MPa and 14.44±6.06 MPa for self-etch and total-etch bonding systems in cyclic loading group, respectively. The SBS was 9.43±5.3 MPa and 11.31±5.42 MPa in self-etch and total-etch groups without cyclic loading, respectively. Cyclic loading did not cause any significant difference in SBS (P>0.05). The ARI scores of the groups were significantly different (P<0.05). Conclusions: The present results demonstrated that low masticatory forces at 10,000 cycles did not have a significant impact on bracket-adhesive SBS; however, they significantly changed the ARI score. Even though the total-etch bonding system yielded higher SBS than the self-etch system, the performance of both was clinically acceptable.

scholarly journals Effect of nanotechnology in self-etch bonding systems on the shear bond strength of stainless steel orthodontic brackets

2017 ◽  
Vol 22 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Shaza M. Hammad ◽  
Noha El-Wassefy ◽  
Ahmed Maher ◽  
Shafik M. Fawakerji
Keyword(s):  
Electron Microscopy ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Orthodontic Brackets ◽  
Homogeneous Distribution ◽  
Significant Difference ◽  
Silica Dioxide ◽  
Bonding Systems ◽  
Self Etch

ABSTRACT Objective: To evaluate the effect of silica dioxide (SiO2) nanofillers in different bonding systems on shear bond strength (SBS) and mode of failure of orthodontic brackets at two experimental times. Methods: Ninety-six intact premolars were divided into four groups: A) Conventional acid-etch and primer Transbond XT; B) Transbond Plus self-etch primer; and two self-etch bonding systems reinforced with silica dioxide nanofiller at different concentrations: C) Futurabond DC at 1%; D) Optibond All-in-One at 7%. Each group was allocated into two subgroups (n = 12) according to experimental time (12 and 24 hours). SBS test was performed using a universal testing machine. ARI scores were determined under a stereomicroscope. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to determine the size and distribution of nanofillers. One-way ANOVA was used to compare SBS followed by the post-hoc Tukey test. The chi-square test was used to evaluate ARI scores. Results: Mean SBS of Futurabond DC and Optibond All-in-One were significantly lower than conventional system, and there were no significant differences between means SBS obtained with all self-etch bonding systems used in the study. Lower ARI scores were found for Futurabond DC and Optibond All-in-One. There was no significant difference of SBS and ARI obtained at either time points for all bonding systems. Relative homogeneous distribution of the fillers was observed with the bonding systems. Conclusion: Two nanofilled systems revealed the lowest bond strengths, but still clinically acceptable and less adhesive was left on enamel. It is advisable not to load the brackets immediately to the maximum.

scholarly journals Comparison of Shear Bond Strength Orthodontic Brackets Bonded to Zirconia and Lithium Disilicate Crowns

2019 ◽  
Vol 53 (1) ◽  
pp. 17-27 ◽  
Author(s):  
Blerim Mehmeti ◽  
Jeta Kelmendi ◽  
Donika Iiljazi-Shahiqi ◽  
Bleron Azizi ◽  
Suzana Jakovljevic ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Lithium Disilicate ◽  
Orthodontic Brackets

scholarly journals Do Chemical-Based Bonding Techniques Affect the Bond Strength Stability to Cubic Zirconia?

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3920
Author(s):  
Allegra Comba ◽  
Andrea Baldi ◽  
Riccardo Michelotto Tempesta ◽  
Massimo Carossa ◽  
Letizia Perrone ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Artificial Aging ◽  
Silica Coating ◽  
Strength Test ◽  
Zirconia Sample ◽  
Luting Cement ◽  
Bonferroni Test ◽  
Bonding Systems ◽  
Composite Cylinders

This study evaluated the effectiveness of chemical-based adhesive techniques on promoting immediate and aged bond strength between zirconia and luting cement. A total of 128 discs of zirconia were divided into 4 groups (n = 32) according to the adhesive treatment: tribochemical silica-coating followed by silane (Silane Primer, Kerr) and bonding (Optibond FL, Kerr), Signum Zirconia Bond (Hereaus), Z-Prime Plus (Bisco), and All-Bond Universal (Bisco). Composite cylinders were cemented on the zirconia sample with Duo-Link Universal (Bisco). Eight specimens per group were subjected to 10,000 thermocycles and subsequently bond strength was tested with shear-bond strength test. ANOVA test showed that artificial aging significantly affected the bond strength to zirconia. Bonferroni test highlighted a significant influence of adhesive treatment (Signum) on bond strength after thermocycling. It was concluded that 10-MDP-based bonding systems showed no improvement in initial bond strength compared with tribochemical treatment. All chemical bonding techniques tested in this study were influenced by thermocycling.

scholarly journals Shear bond strength of orthodontic brackets to enamel after application of a caries infiltrant

2014 ◽  
Vol 85 (4) ◽  
pp. 645-650 ◽  
Author(s):  
Laura Mews ◽  
Matthias Kern ◽  
Robert Ciesielski ◽  
Helge Fischer-Brandies ◽  
Bernd Koos
Keyword(s):  
Statistical Analysis ◽  
Bond Strength ◽  
Shear Force ◽  
Shear Bond Strength ◽  
Orthodontic Brackets ◽  
Enamel Defects ◽  
Adhesive Remnant Index ◽  
Demineralized Enamel ◽  
Kolmogorov Smirnov ◽  
Bond Strengths

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.

scholarly journals Effects of Ozone and Prophylactic Antimicrobial Applications on Shear Bond Strength of Orthodontic Brackets

2017 ◽  
Vol 30 (4) ◽  
pp. 101-105 ◽  
Author(s):  
Ozer Alkan ◽  
Betul Oktay Coven ◽  
Betul Ozcopur ◽  
Fatih Kazanci ◽  
Yesim Kaya ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Orthodontic Brackets
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