THE EFFECT OF THIOUREA ON SHEAR BOND STRENGTHS OF COMPOSITE TO BLEACHED ENAMEL

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JAVAHERI M.; JALALI SHAHRZAD

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Information Journal Paper

Title

THE EFFECT OF THIOUREA ON SHEAR BOND STRENGTHS OF COMPOSITE TO BLEACHED ENAMEL

Author(s)

JAVAHERI M. | JALALI SHAHRZAD | Issue Writer Certificate

Keywords

THIOUREAQ3

DENTAL ENAMELQ3

COMPOSITEQ2

RESTORATIONQ3

TRANSPLANATIONQ3

Abstract

Background: Reduced COMPOSITE-tooth bond strength after bleaching inhibits immediate tooth RESTORATION.Objective: To determine the effect of THIOUREA as a free radical scavenger on shear bond strength of COMPOSITE to bleached enamel.Methods: Enamel surfaces of 96 sound human premolars were randomly assigned to six experimental groups (n=12) which were bleached with %15 CP, and two control groups 1, 2 (n=12) bonded without bleaching. The specimens in groups 3 and 4 (n=24) were bonded 24 hours after bleaching. Groups 5 and 6 (n=24) were bleached with a mixture of %15 CP and THIOUREA followed by bonding. Groups 7 and 8 (n=24) were bleached, immersed in water and left for 1 week. In odd groups, single bond and in even groups Excite were used. COMPOSITE Cylinders were bonded and the shear bond strengths were determined 24 hours later. Data were subjected to one-way ANOVA and Tukey HSD at a significant levels of p<0.05.Findings: There was no statistically significant difference between diverse groups. Mean bond strength was lowest in groups 3 and 4 and highest mainly in group 8 and with a little decrease in group 5.Conclusion: Bleaching with 15% carbamid peroxide caused insignificant reduction in COMPOSITEenamel bond strengths in bonding either after 24 hours or one week following the application of 2 types of bonding agents. Application of THIOUREA in combination with bleaching agents may be useful for immediate COMPOSITE RESTORATIONs.

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APA: Copy

JAVAHERI, M., & JALALI, SHAHRZAD. (2009). THE EFFECT OF THIOUREA ON SHEAR BOND STRENGTHS OF COMPOSITE TO BLEACHED ENAMEL. JOURNAL OF INFLAMMATORY DISEASES (THE JOURNAL OF QAZVIN UNIVERSITY OF MEDICAL SCIENCES), 13(2 (51)), 77-83. SID. https://sid.ir/paper/49122/en

Vancouver: Copy

JAVAHERI M., JALALI SHAHRZAD. THE EFFECT OF THIOUREA ON SHEAR BOND STRENGTHS OF COMPOSITE TO BLEACHED ENAMEL. JOURNAL OF INFLAMMATORY DISEASES (THE JOURNAL OF QAZVIN UNIVERSITY OF MEDICAL SCIENCES)[Internet]. 2009;13(2 (51)):77-83. Available from: https://sid.ir/paper/49122/en

IEEE: Copy

M. JAVAHERI, and SHAHRZAD JALALI, “THE EFFECT OF THIOUREA ON SHEAR BOND STRENGTHS OF COMPOSITE TO BLEACHED ENAMEL,” JOURNAL OF INFLAMMATORY DISEASES (THE JOURNAL OF QAZVIN UNIVERSITY OF MEDICAL SCIENCES), vol. 13, no. 2 (51), pp. 77–83, 2009, [Online]. Available: https://sid.ir/paper/49122/en

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