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Surface roughness of resin-based composites Subjected to professional prophylaxis

Aim: This study evaluated the effect of two prophylaxis methods over the surface roughness of different resin composites. Materials and Methods: Ten disc-shaped specimens (7 mm x 2 mm) were made for each composite tested: MH - microhybrid composite with regular viscosity (Opallis); NH - nanohybrid c...

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Main Authors: João Lacerda Neto (Author), José Alejandro Castro González (Author), Matheus de Paula Costa (Author), Leticia de Andrade Balardini (Author), Marissol Fernandes Oliveira (Author), Marina Amaral (Author), Rayssa Ferreira Zanatta (Author)
Format: Book
Published: Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia, 2023-12-01T00:00:00Z.
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Summary:Aim: This study evaluated the effect of two prophylaxis methods over the surface roughness of different resin composites. Materials and Methods: Ten disc-shaped specimens (7 mm x 2 mm) were made for each composite tested: MH - microhybrid composite with regular viscosity (Opallis); NH - nanohybrid composite with regular viscosity (Vittra APS); BF - high-viscosity bulk fill composite (Opus Bulk Fill); MHF - microhybrid flowable composite (Opallis flow); and OS - nanohybrid one-shade composite with regular viscosity (Vittra Unique). Initial roughness (Ra) values were obtained from each sample, and then they were divided into two groups (n = 5) following the prophylaxis method: SB - prophylaxis with sodium bicarbonate powder (125µm grain) using an air-powder polishing device (30 s application distanced 10 mm with 2 bar); and PP - prophylaxis with pumice paste and rotatory brush (30 s, 3000 rpm and pressure of 150 g). After that, a new Ra measurement (Raf) was obtained, and the difference was calculated (ΔRa). Data were compared using Three-way ANOVA followed by Bonferroni teste and the Ra difference (ΔRa) was analyzed by Two-way ANOVA followed by the Tukey test (p<0.05). Results: MHF presented higher Ra values after receiving prophylaxis with SB, while for NH, the abrasion with pumice increased the Ra, and for the other groups, no differences were found. Discussion: Alteration promoted by prophylaxis is material dependent. Conclusion: Professional prophylaxis with a bicarbonate jet or abrasion with pumice-based paste can induce changes in the composites' roughness.
Item Description:0566-1854
2177-0018
10.22456/2177-0018.130840

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