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Evaluation of Bulk Fill Composite Roughness Polished with Spiral Rubber Discs: An In-vitro Study
ZC01-ZC05
Correspondence
Luís Felipe Espíndola-Castro,
Av. General. Newton Cavalcanti, 1650-Tabatinga Camaragibe,
Recife-54756-220, Pernambuco, Brazil.
E-mail: lipe_espindola@hotmail.com
Introduction: Restorations with high surface roughness directly influences restorative procedure longevity. When used correctly, polishing systems optimises the quality, aesthetics and longevity of composite resins.
Aim: To evaluate the influence of three two-step polishing systems of spiral rubber discs on surface roughness of three different bulks fill composite resins.
Materials and Methods: This in-vitro study was conducted from May 2021 to January 2022, at the Universidade Estadual de Pernambuco, School of Dentistry, Recife, Pernambuco, Brazil. Total 20 specimens of each resin {three Bulk Fill resins: Filtek One Bulk Fill (3M-ESPE), Aura Ultra Universal Restorative Bulk Fill (SDI) and Opus Bulk Fill (FGM)} were randomly divided into four groups (n=5 each). The three groups include test polishing systems {Sof-Lex Diamond Polishing System (3M/ESPE, Saint Paul, Minnesota, USA), Decamp Plus Twist Spiral EVE (Odontomega, Ribera Prato, SP, Brazil), Spiral Swivel (Jota, Ruth, Kanton St. Gallen, Switzerland)} and one control group include no polishing system. To assess surface roughness, before and after polishing, specimens were evaluated on a digital rugosimeter. Data was subjected to the Shapiro-Wilk test to assess normality, followed by Analysis of Variance (ANOVA) to compare the mean between the different types of resins and types of polishers.
Results: For the composite resins studied, significant differences were observed only when polished with Sof-lex Spiral (p-value=0.013). All polishing system caused a significant improvement in the roughness of composite resins compared to the control group. The mean roughness reduction comparison test between the types of polisher was significant (p-value <0.001), there was a significantly greater reduction in the roughness of EVE Decamp Plus Twist Spiral and Swivel Spiral polish system, compared to polish system from Sof-Lex Diamond Polishing System and control group. No statistically significant differences were found between EVE Diacomp Plus Spiral and Spiral Swivel polishing system.
Conclusion: The spiral rubber polishers evaluated were effective in reducing the roughness of bulk fill composites. However, EVE Decamp Plus Spiral and Spiral Swivel polishers showed better results than Sof-Lex Spiral.