E. Abd El-Naby, S., I. Mohammed, N., A. Abd El-Ghany, A. (2018). Comparative Evaluation of Shear Bond Strength between Self-Adhesive Resin Composite and Different Adhesive Systems to Dentin at Different Storage Times (In Vitro Study). test, 21(1), 43-46. doi: 10.21608/ajdsm.2020.71473
Saad E. Abd El-Naby; Nady I. Mohammed; Ahmed A. Abd El-Ghany. "Comparative Evaluation of Shear Bond Strength between Self-Adhesive Resin Composite and Different Adhesive Systems to Dentin at Different Storage Times (In Vitro Study)". test, 21, 1, 2018, 43-46. doi: 10.21608/ajdsm.2020.71473
E. Abd El-Naby, S., I. Mohammed, N., A. Abd El-Ghany, A. (2018). 'Comparative Evaluation of Shear Bond Strength between Self-Adhesive Resin Composite and Different Adhesive Systems to Dentin at Different Storage Times (In Vitro Study)', test, 21(1), pp. 43-46. doi: 10.21608/ajdsm.2020.71473
E. Abd El-Naby, S., I. Mohammed, N., A. Abd El-Ghany, A. Comparative Evaluation of Shear Bond Strength between Self-Adhesive Resin Composite and Different Adhesive Systems to Dentin at Different Storage Times (In Vitro Study). test, 2018; 21(1): 43-46. doi: 10.21608/ajdsm.2020.71473

Comparative Evaluation of Shear Bond Strength between Self-Adhesive Resin Composite and Different Adhesive Systems to Dentin at Different Storage Times (In Vitro Study)

Al-Azhar Journal of Dental Science
Article 6, Volume 21, Issue 1, January 2018, Pages 43-46    PDF (203.4 K)
Document Type: Original Article
DOI: 10.21608/ajdsm.2020.71473
Authors
Saad E. Abd El-Naby* 1; Nady I. Mohammed* 2; Ahmed A. Abd El-Ghany3
1Demonstrator, Department of Operative dentistry, Faculty of Dental Medicine, al Azhar University, Assuit.
2Assistant Professor Department of Operative dentistry, Faculty of Dental Medicine boys, al Azhar University. Cairo.
3Lecturer, Department of Operative dentistry, Faculty of Dental Medicine, al Azhar University, Assuit.
Abstract
Aim: This study was directed to evaluate the shear bond strength between self-adhesive resin composite and different adhesive systems to dentin at different storage times. Materials and method: Extracted human premolars teeth (n=99) were used, where their occlusal surfaces were prepared. Specimens were divided into three equal main groups according to the adhesive system used. (A1; Self-adhesive flowable composite, A2; One step self-etch adhesive system, A3; Two-steps etch and rinse adhesive system). Then each main group was subdivided according the storage time into three equal subgroups (B1; 24 hours, B2; Three months, B3; Six months) The final assembly was mounted on a universal testing machine (Lloyd instruments, LR 5K, England). A shear load was applied at a crosshead speed of 0.5 mm/min. until failure occurred. The data was recorded using computer software (Nexygen-MT Lloyd Instruments). Results: A statistically significant difference in shear bond strength was found between all the adhesive groups. After instrumentation where (p≤0.001). Also, a statistically significant difference in shear bond was found between three months and six months groups for all adhesives where (p≤0.001). Conclusion: Self-adhering flowable composite has poor bond strength to dentin and storage in water for long periods has a highly significant adverse effect on bond strength.
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