scholarly journals Effect of applying adhesive after enamel etching on the shear bond strength of orthodontic brackets using light curing resin cements

2021 ◽  
Vol 37 (4) ◽  
pp. 209-216
Author(s):  
Eung-Hyun Kim ◽  
Jin-Woo Kim ◽  
Se-Hee Park ◽  
Yoon Lee ◽  
Kyung-Mo Cho
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Orthodontic Brackets ◽  
Resin Cements ◽  
Light Curing

scholarly journals Prototype of a new tip developed to be coupled to dental light-curing units for optimizing bonding of orthodontic brackets and accessories

2013 ◽  
Vol 18 (6) ◽  
pp. 112-116
Author(s):  
Sergio Luiz Mota Júnior ◽  
Márcio José da Silva Campos ◽  
Marco Abdo Gravina ◽  
Marcelo Reis Fraga ◽  
Robert Willer Farinazzo Vitral
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Light Exposure ◽  
Orthodontic Brackets ◽  
Light Refraction ◽  
New Device ◽  
Halogen Light ◽  
Significant Difference ◽  
Light Curing

OBJECTIVE: development of a new device to be coupled to light-curing units for bonding orthodontic brackets and accessories, and test its efficacy in an in vitro mechanical trial. The inner surface of the device is mirrored and is based on physical concepts of light refraction and reflection. The main advantage of such device is the reduced clinical time needed for bonding and the low possibility of contamination during the process. METHODS: One hundred and twenty specimens were used for testing the shear bond strength of brackets bonded with the device. The Adhesive Remnant Index (ARI) was also determined. The sample was divided into 2 groups. In group 1 a halogen light-curing unit was used while in group 2 a led light-curing unit was used. Each group was then subdivided. In subgroups H1 and L1, a conventional light guide rod was used while in subgroups H2 and L2 bonding was performed with the mirrored device coupled to the tip of the guide light rod. RESULTS: The values obtained for the shear bond strength and the ARI in the subgroups were compared. Results showed that there was no statistically significant difference for the shear strength (p > 0.05) and the ARI (p > 0.05) between the subgroups. CONCLUSION: The tests of mechanical trials and the ARI analysis showed that the new device fulfilled the requirements for bonding orthodontic accessories, and that the time for bonding was reduced to half, being necessary only one light exposure.

scholarly journals Shear bond strength of orthodontic resins after caries infiltrant preconditioning

2012 ◽  
Vol 83 (2) ◽  
pp. 306-312 ◽  
Author(s):  
Ewelina Naidu ◽  
Bogna Stawarczyk ◽  
Pune Nina Tawakoli ◽  
Rengin Attin ◽  
Thomas Attin ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Glass Ionomer Cement ◽  
Resin Cement ◽  
Resin Cements ◽  
Bonding System ◽  
Demineralized Enamel ◽  
Light Curing ◽  
Orthodontic Bonding ◽  
Bovine Enamel

ABSTRACT Objective: To investigate the influence of caries infiltrant preconditioning on the shear bond strength of orthodontic resin cements on sound and demineralized enamel. Materials and Methods: Stainless-steel brackets were bonded to sound or artificially demineralized (14 d, acidic buffer, pH 5.0) bovine enamel specimens using a resin cement or a combination of caries infiltrant preconditioning (Icon, DMG) and the respective resin cement (light-curing composite: Heliosit Orthodontic, Transbond XT, using either Transbond XT Primer or Transbond Plus Self Etching Primer; light-curing resin-modified glass ionomer cement: Fuji Ortho; or self-curing composite: Concise Orthodontic Bonding System). Each group consisted of 15 specimens. Shear bond strength was evaluated after thermo-cycling (10,000×, 5°C to 55°C) at a crosshead speed of 1 mm/min, and data were statistically analyzed by analysis of variance, Mann-Whitney test, and Weibull statistics. Adhesive Remnant Index (ARI) scores and enamel fractures were determined at 25× magnification and were statistically analyzed by regression analyses (P < .05). Results: The caries infiltrant system significantly increased the shear bond strength of Transbond XT Primer, Transbond Plus Self Etching Primer, and Fuji Ortho in sound specimens, and of all resin cements except for the Concise Orthodontic Bonding System in demineralized enamel. Overall, caries infiltrant preconditioning decreased significantly the number of enamel fractures, but it did not affect ARI scores. Conclusion: Preconditioning of sound and demineralized enamel with the caries infiltrant system did not impair but rather increased the shear bond strength of most orthodontic resin cements while decreasing the risk of enamel fracture at debonding.

scholarly journals Evaluation of different LED light-curing devices for bonding metallic orthodontic brackets

2011 ◽  
Vol 22 (3) ◽  
pp. 249-253 ◽  
Author(s):  
Corina Maia de Souza Pinto ◽  
José Tarcísio Lima Ferreira ◽  
Mírian Aiko Nakane Matsumoto ◽  
Maria Cristina Borsatto ◽  
Raquel Assed Bezerra da Silva ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Mean Value ◽  
Orthodontic Brackets ◽  
Significance Level ◽  
Led Light ◽  
Halogen Light ◽  
Significant Difference ◽  
Light Curing

The aim of this study was to assess the influence of different light-emitting diodes (LED) light-curing devices for bonding orthodontic brackets, using the shear bond strength and analysis of adhesive remnant index (ARI). Crowns from 60 bovine incisors received brackets bonded with Transbond XT. Specimens were divided into 4 groups (n=15) according to the light-curing procedures: HL = control, halogen light; OR = Ortholux LED; UL = Ultraled XP, and RD = Radii LED. All light-curing procedures were performed for 40 s. Shear bond strength test was evaluated using an universal testing machine at a crosshead speed of 0.5 mm/min. Data were analyzed statistically by ANOVA and Tukey's test. The ARI scores were evaluated with a stereoscopic magnifying glass and analyzed statistically by Kruskal-Wallis test. A significance level of 5% was set for all analyses. Shear bond strength means in MPa and standard deviations were 9.82 (3.28), 12.70 (3.35), 9.04 (2.80) and 11.22 (2.36) for HL, OR, UL and RD, respectively. OR presented the highest shear bond strength mean value. HL differed significantly (p<0.05) from Groups OR and RD. However, these groups did not differ significantly from each other (p>0.05). Regarding the ARI scores, no statistically significant difference was observed (p>0.05) among the groups. In conclusion, Ortholux LED and Radii LED units provided the highest values of bracket adhesive strength.

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
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