Comparison of bond strength and surface morphology of dental enamel for acid and Nd-YAG laser etching

1999 ◽  
Author(s):  
Diagaradjane Parmeswearan ◽  
Singaravelu Ganesan ◽  
P. Ratna ◽  
D. Koteeswaran
Keyword(s):  
Surface Morphology ◽  
Bond Strength ◽  
Dental Enamel ◽  
Laser Etching ◽  
Yag Laser

scholarly journals Effect of the Er: YAG laser on the shear bond strength of conventional glass ionomer and BiodentineTM to dentine

2018 ◽  
Vol 12 (03) ◽  
pp. 380-385 ◽  
Author(s):  
Abtesam Aljdaimi ◽  
Hugh Devlin ◽  
Mark Dickinson
Keyword(s):  
Laser Radiation ◽  
Bond Strength ◽  
Laser Treatment ◽  
Shear Bond Strength ◽  
Statistical Significance ◽  
Testing Machine ◽  
Glass Ionomer ◽  
Laser Etching ◽  
Yag Laser ◽  
Significant Difference

ABSTRACTObjectives: The purpose of this study was to determine if Er: YAG laser etching improves the shear bond strength (SBS) of Biodentin™ and GC Fuji IX® to dentine. Materials and Methods: Forty human dentine specimens were standardized and embedded in stone. The specimens were randomized into four groups (n = 10). Twenty samples were treated with the Er: YAG laser radiation and 10 of these restored with GC Fuji IX® and 10 with Biodentine™. The remaining 20 specimens acted as controls (no laser treatment); 10 were restored with GC Fuji IX® and 10 with Biodentin™. All samples were then stored in an incubator at 37.5°C and 100% humidity for 7 days. The SBS was determined using a Zwick universal testing machine. A two-way analysis of variance test was used to evaluate the statistical difference in SBS between the groups. An independent sample t-test was used to determine the statistical significance of differences between control and lased groups within the same material. Results: A highly statistically significant difference in SBS was found with the laser treatment (P = 0.0001) and material (i.e., Biodentin™ or Fuji IX® (P = 0.0001). The GC Fuji IX® group recorded the highest mean SBS required to dislodge the material from the laser-treated dentine surface (1.77 ± 0.22 Mega-Pascal [MPa]). The mean SBS of Biodentin™ to dentine following the laser radiation (1.12 ± 0.16 MPa) was significantly greater compared to the nonlased dentine (0.53 ± 0.09). Pearson Chi-square test indicated a nonsignificant relation between shear strength and mode of failure (P = 0.467). Conclusion: Laser etching of the dentine surfaces yielded a significant increase in the bond strength for both GC Fuji IX® and Biodentin™. The SBS of Biodentin™ to dentine is greater than with conventional glass ionomer (Fuji IX®).

Testing the Shear Bond Strength of Orthodontic Brackets After Acid and Er: Yag Laser Etching

2012 ◽  
Vol 3 (2) ◽  
pp. 315-319
Author(s):  
Aleksic Ema ◽  
◽  
Lalic Maja ◽  
Malesevic Adam ◽  
Borotic Nenad ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Orthodontic Brackets ◽  
Laser Etching ◽  
Yag Laser

Effects of 445-nm Diode Laser-Assisted Debonding of Metallic Brackets on Shear Bond Strength and Enamel Surface Morphology

2020 ◽  
Vol 38 (3) ◽  
pp. 160-166 ◽  
Author(s):  
Thomas Knaup ◽  
Heike Korbmacher-Steiner ◽  
Andreas Braun ◽  
Johannes-Simon Wenzler ◽  
Isabel Knaup ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Bond Strength ◽  
Diode Laser ◽  
Shear Bond Strength ◽  
Enamel Surface

scholarly journals Shear Strength of Brackets Bonded with Universal Adhesive Containing 10-MDP after 20,000 Thermal Cycles

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Mariana Almeida Mello Proença ◽  
Karime Tavares Lima da Silva ◽  
Alisson Costa e Silva ◽  
Edilausson Moreno Carvalho ◽  
José Bauer ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Dental Enamel ◽  
Adhesive System ◽  
Test Machine ◽  
Adhesive Systems ◽  
Thermal Cycles ◽  
Universal Adhesive ◽  
Adhesive Remnant Index ◽  
One Way Anova

Objectives. The aim of this study was to evaluate the shear bond strength of metal brackets bonded with different universal adhesive systems containing 10-MDP and Transbond Plus Self Etching Primer after 20,000 thermal cycles. Materials and Methods. A total of 130 sound bovine teeth were used, which are divided into 5 groups (n = 26) according to the adhesive system used: All-Bond Universal (Bisco), Ambar Universal (FGM), Clearfil Universal Bond (Kuraray), Single Bond Universal (3M/ESPE), and Transbond Plus SEP (3M/ESPE) as control. The adhesives were applied for 20 seconds and bonded with a resin Transbond XT (3M/ESPE). After this, the teeth were submitted to 20,000 cycles at 5°C and 55°C. Afterwards, the shear bond strength test was performed in a universal test machine (Instron 3342). The adhesive remnant index (ARI) was evaluated under a stereomicroscope at 10x magnification and scanning electronic microscopy (SEM, Hitachi 3030). The shear bond strength data were submitted to One-Way ANOVA (α = 0.05) and the ARI to the Kruskal–Wallis test (α = 0.05). Results. Statistical analysis showed that the universal adhesive systems presented mean shear bond strength values similar to Transbond Plus SEP (p<0.05). The universal adhesive presented similar ARI values among them but differed from those of Transbond Plus SEP (p<0.001). Transbond Plus SEP presented a high ARI value when compared with the universal adhesive systems and high demineralization of enamel. Conclusions. The results show that universal adhesive systems may be used for bonding metal brackets if the orthodontist wants to maintain dental enamel health.

scholarly journals Evaluation of the shear bond strength of resin cement to enamel after bleaching with Er: YAG and diode laser

2020 ◽  
Vol 29 ◽  
pp. 2633366X1989996
Author(s):  
Akin Ceyda ◽  
Sevimay Müjde ◽  
Ozyilmaz Ozgun Yusuf ◽  
Cokuk Neslihan
Keyword(s):  
Bond Strength ◽  
Diode Laser ◽  
Shear Bond Strength ◽  
Color Change ◽  
Resin Cement ◽  
Control Groups ◽  
Laser Applications ◽  
Yag Laser ◽  
Atomic Force ◽  
Electron Microscope Analysis

Objective: The shear bond strength (SBS) of composite resin cement and color change to enamel bleached with two different concentrations of hydrogen peroxide (HP) bleaching agents in combination with two different laser applications was evaluated. Materials and Methods: The Er: YAG laser ( λ = 2940 nm) and diode laser ( λ = 940 nm) were used with the bleaching agent consisting of 40% HP opalescence (Opalescence Xtra Boost, Ulgen, South Jordan, UT, USA) and 35% HP whiteness (Whiteness HP Blue, FGM Dental Products, Joinville, SC, Brazil). Seventy-two human extracted teeth were randomly divided into two groups: For the 40% HP treatment, 36 specimens were divided into three subgroups: (1) HP agent with no laser treatment, (2) HP agent treated with Er: YAG laser, and (3) HP agent treated with diode laser. The same protocol was performed for the 35% HP. The color change was analyzed using the Commission Internationale de l’ Eclairage (CIE) L* a* b* system and surface roughness was analyzed by an atomic force microscope. The specimens were bonded with resin cement and a shear bond test was performed at 0.5 mm/min. The failure surfaces were evaluated using scanning electron microscope analysis. Results: Δ E value of the 40% HP + Er: YAG group was significantly higher than the other groups while diode groups showed the lower SBS values than the control groups ( p < 0.05). Conclusions: The Er: YAG laser with 40% HP may be effective for the brighter teeth and the use of Er: YAG laser produced higher adhesion between enamel and resin cement than diode laser.

scholarly journals Comparison of shear bond strength of orthodontics brackets on composite resin restorations with different surface treatments

2013 ◽  
Vol 18 (4) ◽  
pp. 98-103 ◽  
Author(s):  
Alexandre Antonio Ribeiro ◽  
Ariane Vicente de Morais ◽  
Daniel Paludo Brunetto ◽  
Antonio Carlos de Oliveira Ruellas ◽  
Monica Tirre Souza de Araujo
Keyword(s):  
Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Dental Enamel ◽  
Acrylic Resin ◽  
Orthodontic Brackets ◽  
Control Group ◽  
Post Test ◽  
Composite Resin Restorations ◽  
Resin Restorations

INTRODUCTION: Orthodontic patients frequently present composite resin restorations, however there are few studies that evaluate the best way for orthodontic bonding in this situation. OBJECTIVE: The objective of this work was to evaluate the bond strength of orthodontic brackets in resin restorations with surface treatment. METHODS: Fifty one bovine lower incisors were randomly divided into three groups. On the control group (CG) the brackets were bonded to dental enamel; on experimental groups, brackets were bonded to resin restoration with diamond drill treatment (EGT) and with no treatment (EGN). The teeth were placed in PVC tubes with autopolymerized acrylic resin. The shear test was performed in EMIC universal testing machine. The groups were submitted to ANOVA analysis of variance with Tukey post test to verify the statistical difference between groups (α = 0.05). RESULTS: CG (6.62 MPa) and EGT (6.82 MPa) groups presented similar results, while EGN (5.07 MPa) obtained statistically lower results (p < 0.05). CONCLUSION: Therefore, it is concluded that the best technique for bonding of orthodontic brackets on composite resin restorations is the performance of surface detritions.

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