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Egyptian Dental Journal
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Volume Volume 68 (2022)
Volume Volume 67 (2021)
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Issue Issue 1 - January (Oral Medicine, X-Ray, Oral Biology & Oral Pathology)
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Issue Issue 1 - January (Conservative Dentistry and Endodontics)
Volume Volume 66 (2020)
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Samy, L., Samaha, A., El-Askary, F. (2021). CAD/CAM Surface Treatment And Type Of Adhesive Affect CAD/CAM Composite Bonding To Dentin. Egyptian Dental Journal, 67(3), 2711-2723. doi: 10.21608/edj.2021.68272.1554
Lina Samy; Aya Samaha; Farid El-Askary. "CAD/CAM Surface Treatment And Type Of Adhesive Affect CAD/CAM Composite Bonding To Dentin". Egyptian Dental Journal, 67, 3, 2021, 2711-2723. doi: 10.21608/edj.2021.68272.1554
Samy, L., Samaha, A., El-Askary, F. (2021). 'CAD/CAM Surface Treatment And Type Of Adhesive Affect CAD/CAM Composite Bonding To Dentin', Egyptian Dental Journal, 67(3), pp. 2711-2723. doi: 10.21608/edj.2021.68272.1554
Samy, L., Samaha, A., El-Askary, F. CAD/CAM Surface Treatment And Type Of Adhesive Affect CAD/CAM Composite Bonding To Dentin. Egyptian Dental Journal, 2021; 67(3): 2711-2723. doi: 10.21608/edj.2021.68272.1554

CAD/CAM Surface Treatment And Type Of Adhesive Affect CAD/CAM Composite Bonding To Dentin

Article 11, Volume 67, Issue 3 - Serial Number 4, July 2021, Page 2711-2723  XML PDF (1.22 MB)
Document Type: Original Article
DOI: 10.21608/edj.2021.68272.1554
Authors
Lina Samy email 1; Aya Samaha2; Farid El-Askary3
1Demonstrator, and Master’s Degree Student, Operative Dentistry Department, Faculty of Dentistry, Ain Shams University
2Lecturer, Operative Dentistry Department, Faculty of Dentistry, Ain Shams University.
3Professor, Operative Dentistry Department, Faculty of Dentistry, Ain Shams University
Abstract
Objective: To evaluate the effect of CAD/CAM surface treatments and different adhesives on the shear bond strength (SBS) of a CAD/CAM composite to dentin.

Materials and Methods: In total, 120-flat dentin surfaces were prepared, and divided into 12 groups (n=10) according to: 1- CAD/CAM surface treatment, and 2: Type of adhesive. A total of 120 CAD/CAM composite rods (2mmx2mmx4mm) were prepared, and sandblasted. The rods were left without further treatment, ultrasonically cleaned in distilled water, or acid etched using 35% phosphoric acid. The dual- and self-cured adhesives were applied to dentin, in etch-and-rinse or self-etching modes and the rods were cemented using dual-cured resin cement. The SBS test was run at a crosshead speed of 0.5 mm/min until failure. Data were analyzed using Two-Way ANOVA/Tukey test, P=0.05.

Results: Factors “surface treatment”, “adhesive” and “surface treatment x adhesive” had significant effect on SBS (P0.05). Sandblasting had the highest significant SBS among surface treatments (P<0.05). Self-cured adhesive showed higher SBS compared to dual-cured adhesive in etch-and-rinse mode (P<0.05). Mixed failure was the predominate failure (59.2%).

Conclusion: Sandblasting improved the SBS of a CAD/CAM composite to dentin. The use of dual-cured universal and self-cured adhesives in their simplified self-etching approach is preferrable.
Keywords
CAD/CAM composite; Surface treatments; Universal adhesive; Self-cured adhesive; Shear bond strength
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