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

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.

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Effect of Air-Abraded Versus Laser-Fused Fluorapatite Glass-Ceramics on Shear Bond Strength of Repair Materials to Zirconia

Materials ◽

10.3390/ma14061468 ◽

2021 ◽

Vol 14 (6) ◽

pp. 1468

Author(s):

Alaaeldin Elraggal ◽

Nikolaos Silikas

Keyword(s):

Surface Roughness ◽

Bond Strength ◽

Surface Treatment ◽

Shear Bond Strength ◽

Resin Composite ◽

Glass Ceramics ◽

Surface Treatments ◽

Control Groups ◽

Yag Laser ◽

Repair Materials

Zirconia repair could be a feasible alternative option to total replacement in fractured zirconia-based restorations. Maximising the bond strength by enriching zirconia with fluorapatite glass-ceramics (FGC) powder has been addressed and compared to other surface treatments. Besides resin composite, other repair materials have been proposed and compared. Zirconia blocks received different surface treatments (A—sandblasting with tribochemical silica-coated alumina (CoJet). B—sandblasting with FGC powder (FGC), C—fluorapatite glass-ceramic coat+ neodymium-doped yttrium aluminum garnet laser irradiation (FGC + Nd: YAG), and D—no surface treatment). The surface roughness, topography, and crystallinity were investigated by a profilometer, scanning electron microscopy (SEM), and X-ray diffraction (XRD) analyses, respectively. For each surface treatment, three repair materials (feldspathic porcelain, lithium disilicate, and resin composite) were bonded to zirconia with 10, Methacryloyloxydecyl dihydrogen phosphate (MDP)–Monobond Plus/ Multilink Automix. Bonded specimens were thermocycled for 10,000 cycles and tested for shear bond strength (SBS) at a speed of 1 mm/min, followed by the analysis of the mode of failure. FGC + Nd: YAG laser group reported the highest surface roughness and monoclinic content compared to CoJet, FGC, and control groups. The highest mean SBS was found in FGC-blasted zirconia, followed by FGC + Nd: YAG laser and CoJet treated groups. However, the lowest SBS was found in control groups regardless of the repair material. Sandblasting zirconia with FGC powder increased SBS of resin to zirconia with lower monoclinic phase transformation compared to FGC + Nd: YAG or CoJet groups.

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Effect of Diode Laser Irradiation of Bonding Agents Before Curing Versus Standard Bonding Protocol on the Shear Bond Strength Between Resin Cement and Dentin

Brazilian Dental Science ◽

10.14295/bds.2019.v22i3.1796 ◽

2019 ◽

Vol 22 (3) ◽

pp. 395-407

Author(s):

Nada Maged El-Hakim ◽

Ashraf Mokhtar ◽

Tamer Hamza

Keyword(s):

Bond Strength ◽

Laser Irradiation ◽

Diode Laser ◽

Shear Bond Strength ◽

Testing Machine ◽

Resin Cement ◽

Bonding Agent ◽

Hybrid Layer ◽

Significant Difference ◽

Self Etch

Objective: This study aimed to evaluate the effect of diode laser irradiation (970 nm) of a one-step self-etch adhesive (Clearfil S3Bond/CS3B) and of the bonding agent of a two-step self-etch adhesive (Clearfil Liner Bond F/CLBF) placed on dentin before polymerization on the shear bond strength.Material and methods: Forty sound premolars were sectioned buccally to obtain flat dentin surfaces. The specimens were divided into 4 groups (n=10): Group (OS) – CS3B + polymerization. Group (OS-L) – CS3B + laser + polymerization. Group (TS) – CLBF (bonding agent only) + polymerization. Group (TS-L) – CLBF (bonding agent only) + laser + polymerization. The diode laser was irradiated through an 8 mm bleaching tip for 10 seconds, (0.4 W, 10 Hz, 4 J). All samples were cemented to composite blocks submitted to 4000 thermal cycles. The samples were tested for shear bond strength in a universal testing machine. Data obtained was analyzed using Two-way (ANOVA) (P ≤ 0.05) and the Bonferroni post-hoc test. Representative samples from each group were analyzed using scanning electron microscopy (SEM). Results: GroupTS-L– (7.43 MPa) displayed statistically significant higher shear bond strength in comparison to that of group TS – (5.13 MPa). No statistically significant difference was found between group OS-L – (6.49 MPa) and group OS – (7.28 MPa). Group TS-L exhibited the highest resin penetration beyond the hybrid layer under SEM. Conclusions: Diode laser irradiation of a bonding agent placed on dentin without prior priming increased the bond strength to dentin and is promising as a new dentin adhesion protocol.

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Influence of irradiation with Er:YAG laser on the shear bond strength of a resin cement to feldspathic ceramic - in vitro study

Cerâmica ◽

10.1590/0366-69132015613581882 ◽

2015 ◽

Vol 61 (358) ◽

pp. 244-250 ◽

Cited By ~ 2

Author(s):

M. C. Loffredo ◽

F. S. Hanashiro ◽

W. Steagall Júnior ◽

M. N. Youssef ◽

W. C. de Souza-Zaroni

Keyword(s):

Bond Strength ◽

Hydrofluoric Acid ◽

Shear Bond Strength ◽

Er:Yag Laser ◽

In Vitro Study ◽

Surface Treatments ◽

Resin Cement ◽

Air Abrasion ◽

Yag Laser

<p>Although several conventional surface treatments have been used on feldspathic ceramic, a few studies investigated the effects of the irradiation with Er: YAG laser using different parameters. The aim of this in vitro study was to evaluate the shear bond strength of a resin cement to feldspathic ceramic, after the application of different surface treatments, especially the irradiation with Er:YAG laser. Forty-two discs made of a feldspathic ceramic were divided into six groups (n = 7): G1: control group - 10% hydrofluoric acid (HF), G2: Air abrasion with Al2O3 + HF; G3: Er: YAG laser with 500 mJ/4Hz, G4: Er: YAG laser with 500 mJ/4Hz: + HF; G5: Er: YAG laser with 400 mJ/6Hz and G6: Er:YAG laser with 400 mJ/6Hz + HF. After this, all the specimens were treated with silane, and then a resin cement cylinder was built on the treated ceramic surface. After 24 h at 37 oC, specimens were submitted to the shear bond strenght test and stereoscopic evaluation to determine the type of failure. The mean bond strength values (MPa) obtained were: G1 - 17.55, G2 - 18.80, G3 - 21.80, G4 - 12.62, G5 - and 15.81 G6- 11.59. After performing the ANOVA and Tukey's test, it was concluded that the group irradiated with Er:YAG laser at 500mJ/4Hz performed similarly to the groups that received the conventional treatments, such as hydrofluoric acid etching and the combination of air abrasion plus hydrofluoric acid, and was higher than the other groups irradiated with Er:YAG laser.</p>

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

Photobiomodulation Photomedicine and Laser Surgery ◽

10.1089/photob.2019.4704 ◽

2020 ◽

Vol 38 (3) ◽

pp. 160-166 ◽

Cited By ~ 1

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

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The effect of resin cement type and cleaning method on the shear bond strength of resin cements for recementing restorations

The Journal of Advanced Prosthodontics ◽

10.4047/jap.2017.9.2.110 ◽

2017 ◽

Vol 9 (2) ◽

pp. 110 ◽

Cited By ~ 2

Author(s):

Roodabeh Koodaryan ◽

Ali Hafezeqoran ◽

Amin Khakpour Maleki

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Resin Cement ◽

Cement Type ◽

Resin Cements ◽

Cleaning Method

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The Influence of Short Pulse Er:Cr: YSGG Laser on the Shear Bond Strength of Cad-Cam Zerconia Material to Resin Cement

Indian Journal of Forensic Medicine & Toxicology ◽

10.37506/ijfmt.v15i3.15762 ◽

2021 ◽

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Short Pulse ◽

Resin Cement ◽

Ysgg Laser ◽

Cad Cam

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Shear bond strength of computer-aided design and computer-aided manufacturing feldspathic and nano resin ceramics blocks cemented with three different generations of resin cement

Journal of Conservative Dentistry ◽

10.4103/0972-0707.164028 ◽

2015 ◽

Vol 18 (5) ◽

pp. 355 ◽

Cited By ~ 6

Author(s):

Zuryati Ab-Ghani ◽

Zaihan Ariffin ◽

Wahyuni Jaafar ◽

SiewFon Foo ◽

Dasmawati Mohamad

Keyword(s):

Bond Strength ◽

Computer Aided Design ◽

Shear Bond Strength ◽

Resin Cement ◽

Computer Aided Manufacturing ◽

Computer Aided ◽

Aided Design

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Effects of Universal Adhesive on Shear Bond Strength of Resin Cement to Zirconia Ceramic with Different Surface Treatments

International Journal of Dentistry ◽

10.1155/2021/5517382 ◽

2021 ◽

Vol 2021 ◽

pp. 1-6

Author(s):

Zohreh Moradi ◽

Farnoosh Akbari ◽

Sara Valizadeh

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Testing Machine ◽

In Vitro Study ◽

Surface Treatments ◽

Resin Cement ◽

Zirconia Ceramic ◽

Single Bond ◽

Universal Adhesive

Aim. This study aimed to assess shear bond strength (SBS) of resin cement to zirconia ceramic with different surface treatments by using Single Bond Universal. Methods. In this in vitro study, 50 zirconia discs (2 × 6 mm) were divided into 5 groups of (I) sandblasting with silica-coated alumina (CoJet) + silane + Single Bond 2, (II) sandblasting with CoJet + Single Bond Universal, (III) sandblasting with alumina + Single Bond Universal, (IV) sandblasting with alumina + Z-Prime Plus, and (V) Single Bond Universal with no surface treatment. Resin cement was applied in plastic tubes (3 × 5 mm2), and after 10,000 thermal cycles, the SBS was measured by a universal testing machine. The mode of failure was determined under a stereomicroscope at × 40 magnification. Data were analyzed using one-way ANOVA. Results. The maximum (6.56 ± 4.29 MPa) and minimum (1.94 ± 1.96 MPa) SBS values were noted in groups III and I, respectively. Group III had the highest frequency of mixed failure (60%). Group V had the maximum frequency of adhesive failure (100%). Conclusion. Single Bond Universal + sandblasting with alumina or silica-coated alumina particles is an acceptable method to provide a strong SBS between resin cement and zirconia.

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Self-etching primer: the effect of contamination with a mixture of saliva and blood on bonding metallic brackets

Journal of Research in Dentistry ◽

10.19177/jrd.v1e22013175-183 ◽

2013 ◽

Vol 1 (2) ◽

pp. 175

Author(s):

Bernardo Urbanetto Peres ◽

Felipe Weidenbach Degrazzia ◽

Renésio Armindo Ghers ◽

Fabíola Rossato Arrais ◽

Vilmar Antonio Ferrazzo

Keyword(s):

Standard Deviation ◽

Bond Strength ◽

Shear Bond Strength ◽

Color Change ◽

Homogeneous Distribution ◽

Distilled Water ◽

Significant Difference ◽

Student Test ◽

Group 2 ◽

Group 1

PURPOSE: To evaluate the shear bond strength (SBS) of metallic brackets bonded with Transbond Plus Self-Etching Primer (TPSEP) and Transbond Plus Color Change (TPCC) under contamination with a mixture of saliva and blood. MATERIALS AND METHODS: 42 human premolars were randomly divided into 2 groups (n=21). Group 1 (G1) were bonded under no contamination, and Group 2 (G2) was contaminated with saliva/blood before bonding. Both groups were bonded according to the manufacturer’s instructions and were cleaned with pumice before bonding. The shear bond strength (SBS) tests were performed after 24 hours in distilled water at 37°C and after thermocycling. RESULTS: Both groups showed a homogeneous distribution in the Levene’s test (p>0.05). The main shear bond strength value of G1 was 8.89 MPa with a standard deviation of 2.27; the value for G2 was 6.00 MPa with a standard deviation of 2.62 MPa. There was a significant difference between G1 and G2 (t-student test p<0.05). IRA scores indicated that the main value was IRA 0, and no significant difference (α=0.05) was found between the groups. CONCLUSION: Contamination of blood mixed with saliva significantly decreases the shear bond strength, but even so, the performance is clinically acceptable.

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