The Assessment of the Abrasiveness for Resin Composite Finishing & Polishing Systems

Authors : Bora KORKUT, Tuna UNAL

Pages : 529-535

Doi:10.33808/clinexphealthsci.852450

View : 39 | Download : 10

Publication Date : 2021-09-27

Article Type : Research Paper

Abstract :Objective: This in vitro study was aimed to assess the abrasiveness of 4 different composite finishing and polishing systems, on two different nano-hybrid composite materials. Methods: 40 composite disc samples were prepared 4 mm in diameter and 2 mm in thickness for each nano-hybrid resin composite insert ignore into journalissuearticles values(Tetric EvoCeram BulkFill A1 body and IPS Empress Direct A1; Ivoclar Vivadent, Schaan, Lichtenstein; n=80 in total);. Each composite group was divided into 4 finishing and polishing system subgroups insert ignore into journalissuearticles values(Sof-Lex Disc, 3M, St. Paul MN, USA; Enhance&Pogo, Dentsply Sirona, Konstanz, Germany; OptraGloss, Ivoclar Vivadent, Shaan, Lichtenstein; Twist Dia, Kuraray Noritake, Tokyo, Japan; n=10 for each subgroup);. Single surface of each sample was roughened with 600 and 800 grit sandpapers insert ignore into journalissuearticles values(Carbimet, Special Silicone Carbide Grinding Paper, IL, USA);, respectively. Initial thickness insert ignore into journalissuearticles values(t1); was measured for each sample with a digital micrometer insert ignore into journalissuearticles values(BMI 770150, Germany);. Then, 4 different finishing&polishing systems were preformed for one side of the samples, at 10 000 rpm, in dry conditions, by a single operator insert ignore into journalissuearticles values(30 s for a single materal);. Final thicknesses insert ignore into journalissuearticles values(t2); were measured after finishing&polishing procedures. Statistical analyses were performed regarding t2-t1 values. Two-way Anova test was used to assess the level of abrasion for the composite and finishing&polishing materials. Tukey HSD was used for multiple comparisons. Results: In terms of composite materials, IPS Empress Direct presented significantly a greater level of abrasion insert ignore into journalissuearticles values(52.85 ± 42.26B); than Tetric Evo Ceram Bulk Fill insert ignore into journalissuearticles values(p < 0.001);. In terms of finishing & polishing materials, significantly a greater level of abrasiveness was observed for Sof-Lex Disc insert ignore into journalissuearticles values(91.25 ± 47.22b); among all insert ignore into journalissuearticles values(p < 0.001);. There was no significant differences in abrasiveness, between Enhance&Pogo - Optragloss insert ignore into journalissuearticles values(p = 0.859);, Enhance&Pogo - Twist Dia insert ignore into journalissuearticles values(p = 0. 891);, and Twist Dia – Optragloss insert ignore into journalissuearticles values(p = 0.440);. Conclusion: Both the type of composite and the finishing & polishing material were considered effective factors for abrasion. The greatest level of abrasiveness was observed for the 4-step Sof-Lex Disc system insert ignore into journalissuearticles values(91 µm on average);, for the total 120 seconds of application. The abrasiveness for the 2-step systems was similar and ranged between 24 – 36 µm on average, for 60 seconds of application. IPS Empress Direct presented a greater level of abrasion than Tetric Evo Ceram Bulk Fill on equal terms of finishing & polishing.
Keywords : Abrasiveness, level of abrasion, composite, finishing, polishing

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