دوره 10، شماره 4 - ( 9-1404 )
جلد 10 شماره 4 صفحات 273-262 |
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Ethics code: IR.SBMU.DRC.REC.1399.045
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Jaberi Ansari Z, Valian A, Maghsoudlou nejad M. Effect of Different Repair Protocols on Repair Bond Strength of Aged Composite Restorations. J Res Dent Maxillofac Sci 2025; 10 (4) :262-273
URL: http://jrdms.dentaliau.ac.ir/article-1-745-fa.html
URL: http://jrdms.dentaliau.ac.ir/article-1-745-fa.html
Effect of Different Repair Protocols on Repair Bond Strength of Aged Composite Restorations. . 1404; 10 (4) :262-273
چکیده: (24 مشاهده)
Background and Aim: This study assessed the effects of composite type, adhesive type, adhesive application protocol, and storage time on repair microshear bond strength (µSBS) of composite restorations.
Materials and Methods: This in vitro, experimental study was conducted on Z350 and Point 4 (n=360) composite discs that were stored in water for 3 weeks at 37°C. After roughening by bur and etching, the specimens were divided into 24 groups (n=15) based on the type of composite (Z350 and Point 4), type of universal adhesive (G-Premio Bond and Clearfil Universal Bond Quick), adhesive application protocol (according to the manufacturer’s instructions, waiting for 30 seconds, or diode laser irradiation of adhesive prior to polymerization for 30 seconds), and storage time (24 hours or 1 year). The specimens were bonded to Z250 repair composite, and underwent µSBS test. The mode of failure was also determined. Data were analyzed by four-way ANOVA and Tukey’s test (alpha=0.05).
Results: Four-way ANOVA showed significant effects of adhesive application protocol (P=0.000) and storage time (P=0.000) on µSBS. The interaction effect of the two on µSBS was also significant (P=0.046). The µSBS after 24 hours was higher than that after 1 year irrespective of the adhesive application protocol. The µSBS was maximum in the laser group followed by waiting for 30 seconds, and all pairwise comparisons were significant in this respect (P=0.000).
Conclusion: In aged composite restoration repair, diode laser irradiation of adhesive prior to polymerization or waiting for 30 seconds prior to adhesive curing can enhance the µSBS.
Materials and Methods: This in vitro, experimental study was conducted on Z350 and Point 4 (n=360) composite discs that were stored in water for 3 weeks at 37°C. After roughening by bur and etching, the specimens were divided into 24 groups (n=15) based on the type of composite (Z350 and Point 4), type of universal adhesive (G-Premio Bond and Clearfil Universal Bond Quick), adhesive application protocol (according to the manufacturer’s instructions, waiting for 30 seconds, or diode laser irradiation of adhesive prior to polymerization for 30 seconds), and storage time (24 hours or 1 year). The specimens were bonded to Z250 repair composite, and underwent µSBS test. The mode of failure was also determined. Data were analyzed by four-way ANOVA and Tukey’s test (alpha=0.05).
Results: Four-way ANOVA showed significant effects of adhesive application protocol (P=0.000) and storage time (P=0.000) on µSBS. The interaction effect of the two on µSBS was also significant (P=0.046). The µSBS after 24 hours was higher than that after 1 year irrespective of the adhesive application protocol. The µSBS was maximum in the laser group followed by waiting for 30 seconds, and all pairwise comparisons were significant in this respect (P=0.000).
Conclusion: In aged composite restoration repair, diode laser irradiation of adhesive prior to polymerization or waiting for 30 seconds prior to adhesive curing can enhance the µSBS.
نوع مطالعه: Original article |
موضوع مقاله:
Restorative Dentistry
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