Effect of Surface Treatment with CO2 Laser on Bond Strength in Composite Resin Restorations

Introduction: Polyether ether ketone (PEEK) has low surface energy and high resistance to chemical surface treatments. Therefore, different surface treatments such as laser conditioning should be investigated. There is a gap of information regarding the efficacy of laser irradiation in the surface treatment of PEEK, and the efficacy of several laser types needs to be evaluated for this purpose. This study aimed to assess the effect of surface treatment with erbium-doped yttrium aluminum garnet (Er:YAG) and carbon dioxide (CO2) lasers on shear bond strength (SBS) of PEEK to composite resin veneers. Methods: In this experimental study, 60 rectangular-shaped PEEK samples (7 x 7 x 2 mm) were used. The samples were mounted in auto-polymerizing acrylic resin in such a way that only one surface measuring 7x7 mm remained exposed. The samples were then randomly divided into 3 groups (n=20) of control, Er:YAG laser surface treatment (Power=1.5 W, energy density=119.42 J/cm2 , irradiation time=20 s) and CO2 laser surface treatment (Power=4 W, energy density=159.22 J/cm2 , irradiation time=50 s). The bonding agent and PEEK opaque were applied on the surface of samples and they were veneered with a composite resin using a hollow plastic cylinder with an internal diameter of 4 mm. The SBS was then measured and the data were analyzed using one-way ANOVA, Tukey HSD test and Dunnett’s test at 0.05 level of significance. Results: The SBS of the 3 groups was significantly different (P<0.001). The Tukey HSD test revealed that the Er:YAG laser had higher SBS than the CO2 laser group (P<0.001). The Dunnett’s test showed that both Er:YAG and CO2 laser groups yielded higher SBS than the control group (P<0.001). Conclusion: The Er:YAG and CO2 laser treatments can increase the SBS of PEEK to composite resin veneers, although the Er:YAG laser seems to be more effective for this purpose.

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Influence of Er:YAG Laser on Cavity Preparation and Surface Treatment in Microleakage of Composite Resin Restorations

Photomedicine and Laser Surgery ◽

10.1089/pho.2006.24.214 ◽

2006 ◽

Vol 24 (2) ◽

pp. 214-218 ◽

Cited By ~ 23

Author(s):

Michelle A. Chinelatti ◽

Renata P. Ramos ◽

Daniela T. Chimello ◽

Silmara A.M. Corona ◽

Jesus D. Pécora ◽

...

Keyword(s):

Surface Treatment ◽

Composite Resin ◽

Er:Yag Laser ◽

Cavity Preparation ◽

Composite Resin Restorations ◽

Resin Restorations

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Influence of method and period of storage on the microtensile bond strength of indirect composite resin restorations to dentine

Brazilian Oral Research ◽

10.1590/s1806-83242008000400012 ◽

2008 ◽

Vol 22 (4) ◽

pp. 352-357 ◽

Cited By ~ 11

Author(s):

Fernanda Ribeiro Santana ◽

Janaína Carla Pereira ◽

Cristina Alves Pereira ◽

Alfredo Júlio Fernandes Neto ◽

Carlos José Soares

Keyword(s):

Bond Strength ◽

Composite Resin ◽

Microtensile Bond Strength ◽

Indirect Composite ◽

Composite Resin Restorations ◽

Resin Restorations

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Effect of surface sealant on the color stability of composite resin restorations

Brazilian Dental Journal ◽

10.1590/s0103-64402011000500003 ◽

2011 ◽

Vol 22 (5) ◽

pp. 365-368 ◽

Cited By ~ 7

Author(s):

Fernanda Valentini ◽

Simone Gomes Dias de Oliveira ◽

Guilherme Zdradk Guimarães ◽

Renata Pereira de Sousa Barbosa ◽

Rafael Ratto de Moraes

Keyword(s):

Repeated Measures ◽

Composite Resin ◽

Color Stability ◽

Distilled Water ◽

Repeated Measures Anova ◽

Color Measurements ◽

Composite Resin Restorations ◽

Surface Sealant ◽

Effect Of Surface ◽

Resin Restorations

This study investigated the effect of sealant application on the color stability of composite resin restorations. Cavities in bovine incisors were restored with composite resin (Opallis; FGM) and the teeth were assigned to 4 groups (n=10). A sealant (Fill Glaze; Vigodent) was applied over the restorations of 2 groups. Baseline color measurements based on the CIEL*a*b* system were carried out using a spectrophotometer. Half the number of specimens was immersed in distilled water, and half was immersed in coffee 4 h/day. Color measurements were repeated after 1 h, 24 h, 7 days and 3 months. Data for each immersion solution were separately subjected to a two-way repeated measures ANOVA and Tukey’s test (α=0.05). For the group without sealant immersed in water, no significant differences were observed among the periods (p≥0.138), but the color was different compared with baseline (p<0.001). For the group with sealant application, the periods baseline, 1 h and 3 months presented similar results (p≥0.924). For groups immersed in coffee, when the sealant was not used, no significant differences were detected between the baseline and the periods 1 h and 24 h (p≥0.499), but the color changed significantly thereafter (p≤0.003). In the group with sealant, significant differences were detected for all periods compared with each other (p<0.001). In conclusion, application of sealant dramatically increased the staining of the restorations exposed to coffee.

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

Dental Press Journal of Orthodontics ◽

10.1590/s2176-94512013000400014 ◽

2013 ◽

Vol 18 (4) ◽

pp. 98-103 ◽

Cited By ~ 9

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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