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Effect of Surface Treatment with Er;Cr:YSSG, Nd:YAG, and CO2 Lasers on Repair Shear Bond Strength of a Silorane-based Composite Resin.

Alizadeh Oskoee P, Mohammadi N, Ebrahimi Chaharom ME, Kimyai S, Pournaghi Azar F, Rikhtegaran S, Shojaeei M - J Dent Res Dent Clin Dent Prospects (2013)

Bottom Line: Background and aims.Sixty eight cylindrical samples of a silorane-based composite resin (Filtek Silorane) were pre-pared and randomly divided into 4 groups as follows: group 1: without surface treatment; groups 2, 3 and 4 with surface treatments using Er; Cr:YSSG, Nd:YAG, and CO2 lasers, respectively.A positive control group (group 5) was assigned in order to measure cohesive strength.

View Article: PubMed Central - HTML - PubMed

Affiliation: Dntal and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran ; Associate Professor, Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.

ABSTRACT
Background and aims. The aim of the present study was to compare the effect ofsurface treatment with Er; Cr:YSSG, Nd:YAG, and CO2 lasers on repair shear bond strength of a silorane-based composite resin. Materials and methods. Sixty eight cylindrical samples of a silorane-based composite resin (Filtek Silorane) were pre-pared and randomly divided into 4 groups as follows: group 1: without surface treatment; groups 2, 3 and 4 with surface treatments using Er; Cr:YSSG, Nd:YAG, and CO2 lasers, respectively. A positive control group (group 5) was assigned in order to measure cohesive strength. Repair shear bond strength values were measured and data was analyzed using one-way ANOVA and a post hoc Tukey test at a significance level of α=0.05. Results. There were statistically significant differences in repair shear bond strength values between group 2 and other groups (P < 0.05); and between group 1and groups 3and 4 (P < 0.001); however, there were no significant differences be-tween groups 3 and 4 (P = 0.91). Conclusion. The repair shear bond strength of silorane-based composite resin was acceptable by surface treatment with lasers.

No MeSH data available.


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Mentions: After all the samples were surface treated, the surfaces were rinsed with distilled water, dried and covered with a layer of silorane bonding agent (3M ESPE, USA). After curing the bonding agent for 10 seconds and placing the plastic mold (with a length of 2 mm and a diameter of 4 mm) at the center of the samples, a new layer of composite resin with a thickness of 2 mm was placed on the surface of the previous layer and light-cured for 40 seconds using Astralis 7 light-curing unit at a light intensity of 400 mW/cm2. Then the plastic mold was removed and the samples were once again light-cured for 20 seconds from each direction. The samples were stored in distilled water for 24 hours at 37ºC; and then a universal testing machine (Hounsfield Test Equipment, Model H5KS, England) was used for shear bond strength test at a strain rate of 1mm/min. The force was applied by the chisel-shaped blade of the equipment at the interface of the old and new composite resin. The bond strength was measured in Newton and was converted to MPa using the following formula:


Effect of Surface Treatment with Er;Cr:YSSG, Nd:YAG, and CO2 Lasers on Repair Shear Bond Strength of a Silorane-based Composite Resin.

Alizadeh Oskoee P, Mohammadi N, Ebrahimi Chaharom ME, Kimyai S, Pournaghi Azar F, Rikhtegaran S, Shojaeei M - J Dent Res Dent Clin Dent Prospects (2013)

© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC3713862&req=5

Mentions: After all the samples were surface treated, the surfaces were rinsed with distilled water, dried and covered with a layer of silorane bonding agent (3M ESPE, USA). After curing the bonding agent for 10 seconds and placing the plastic mold (with a length of 2 mm and a diameter of 4 mm) at the center of the samples, a new layer of composite resin with a thickness of 2 mm was placed on the surface of the previous layer and light-cured for 40 seconds using Astralis 7 light-curing unit at a light intensity of 400 mW/cm2. Then the plastic mold was removed and the samples were once again light-cured for 20 seconds from each direction. The samples were stored in distilled water for 24 hours at 37ºC; and then a universal testing machine (Hounsfield Test Equipment, Model H5KS, England) was used for shear bond strength test at a strain rate of 1mm/min. The force was applied by the chisel-shaped blade of the equipment at the interface of the old and new composite resin. The bond strength was measured in Newton and was converted to MPa using the following formula:

Bottom Line: Background and aims.Sixty eight cylindrical samples of a silorane-based composite resin (Filtek Silorane) were pre-pared and randomly divided into 4 groups as follows: group 1: without surface treatment; groups 2, 3 and 4 with surface treatments using Er; Cr:YSSG, Nd:YAG, and CO2 lasers, respectively.A positive control group (group 5) was assigned in order to measure cohesive strength.

View Article: PubMed Central - HTML - PubMed

Affiliation: Dntal and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran ; Associate Professor, Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.

ABSTRACT
Background and aims. The aim of the present study was to compare the effect ofsurface treatment with Er; Cr:YSSG, Nd:YAG, and CO2 lasers on repair shear bond strength of a silorane-based composite resin. Materials and methods. Sixty eight cylindrical samples of a silorane-based composite resin (Filtek Silorane) were pre-pared and randomly divided into 4 groups as follows: group 1: without surface treatment; groups 2, 3 and 4 with surface treatments using Er; Cr:YSSG, Nd:YAG, and CO2 lasers, respectively. A positive control group (group 5) was assigned in order to measure cohesive strength. Repair shear bond strength values were measured and data was analyzed using one-way ANOVA and a post hoc Tukey test at a significance level of α=0.05. Results. There were statistically significant differences in repair shear bond strength values between group 2 and other groups (P < 0.05); and between group 1and groups 3and 4 (P < 0.001); however, there were no significant differences be-tween groups 3 and 4 (P = 0.91). Conclusion. The repair shear bond strength of silorane-based composite resin was acceptable by surface treatment with lasers.

No MeSH data available.