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Year : 2017  |  Volume : 7  |  Issue : 3  |  Page : 104-109

Evaluation of surface roughness of different direct resin-based composites

1 Department of Conservative Dental Science, College of Dentistry, Prince Sattam Bin Abdulaziz University, Kingdom of Saudi Arabia
2 Department of Prosthetic Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University, Kingdom of Saudi Arabia
3 Intern, College of Dentistry, King Khalid University, Kingdom of Saudi Arabia
4 General Dental Practitioner at Presidency of the Royal Guard, Kingdom of Saudi Arabia

Correspondence Address:
Nashaat Mohammed Magdy
College of Dentistry, Prince Sattam Bin Abdulaziz University, Al Kharj
Kingdom of Saudi Arabia
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jispcd.JISPCD_72_17

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Aims and Objective: To evaluate surface roughness of different resin-based composites. Materials and Methods: Three resin composites, one nanohybrid, one nanoceramic, and one bulk-fill resin-based composite, were used in this study. Cylindrical Teflon mold and 8 mm in diameter and 2 mm in thickness disc specimens were prepared. For each composite material, 15 discs were fabricated, with a total of sixty discs were obtained (n = 60). A glass slide 1–2 mm thick was placed over the strip before curing with the light-curing unit to flatten the surfaces. The specimens were then cured for 40 s through the Mylar strip and the glass slide. Five specimens per each material received no finishing treatment after being cured under Mylar strips; these specimens served as a control. Ten specimens from each composite material were finished/polished with Eve discs at coarse, medium, fine, and superfine grits for 30 s (using stopwatch) each on the specimens. After polishing, the composite surfaces were assessed quantitatively by profilometry and qualitatively by scanning electron microscopy. Data were analyzed using SPSS software. Results: Tetric Evo Ceram and Tetric Evo Ceram Bulk-Fill specimens polished with Eve revealed slightly the same surface appearance as the Mylar strip. Eve discs scratched and exposed fillers of Ceram-x. Eve discs for Z250 surfaces exposed and scratched the filler particles but less than occurred with Ceram-x. Conclusion: Bulk-Fill and nanohybrid resin composites exhibit smoothest surfaces compared with nanoceramic and microhybrid resin composites after polishing.

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