Comparative analysis of the surface roughness of conventional resins and filling after immersion in mouthwashes

Juliana De Souza Silva Zica,Fernanda Barcellos Ameno Faria,Lidiane Cristina Machado Costa,Fernanda Cruz Ferreira,José Flávio Batista Gabrich Giovannini,Isabela Araújo Fernandes,Nívea Aparecida Reis Albuquerque

doi:10.20396/bjos.v19i0.8658569

Juliana De Souza Silva Zica, Fernanda Barcellos Ameno Faria + Show 5 more

Open Access

https://doi.org/10.20396/bjos.v19i0.8658569

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Abstract

Aim: Bulk Fill composite resins were released on the market in order to reduce the time in clinical sessions by using increments of up to 5.0 mm thickness. The aim of this study was to evaluate the effect of the rinsing solutions on the surface roughness of the conventional composite and Bulk fill composite resins. Methods: 40 specimens were prepared from a 4.0mm x 10.0mm teflon matrix and photoactivated for 20 seconds, with 20 specimens made of Filtek Bulk-Fill composite resin (3M ESPE) and 20 specimens made with Filtek™ Z350 XT composite resin (3M ESPE). Each group was subdivided into 2 subgroups: G1 (Filtek™ Z350 XT-3M ESPE-immersed in Colgate PlaxWhitening®); G2 (Filtek™ Z350 XT-3M ESPE-immersed in PlaxFreshMint®); G3 (Filtek™ Bulk-Fill-3M ESPE-immersed in Colgate PlaxWhitening®) and G4 (Filtek™ Bulk-Fill-3M ESPE-immersed in Colgate PlaxFreshMint®). The surface roughness test was performed initially and after immersion in rinses by the Time Group Inc.-TR200® rugosimeter apparatus and the data were submitted to statistical analysis (two-way repeated measures ANOVA). Results: Surface roughness values of the Filtek™ Bulk-Fill composite resin (3M ESPE) were significantly higher than the Filtek™ Z350 XT composite resin (3M ESPE) (P <0.0001). However, no differences were identified before and after immersion in rinses with or without alcohol. Conclusion: The use of mouthwashes does not interfere with the surface roughness of the tested resins, but the composite resin Filtek Z350 XT (3M ESPE) presents a surface with less roughness.

Highlights

Composite resins are restorative materials extensively used in Dentistry due to their excellent aesthetic[1] physical and mechanical properties, which allows the reproduction of characteristics similar to dental structures[2] as well as minimal removal of healthy dental structure
It was noted that all FiltekTM Bulk-Fill composite resins (3M ESPE) groups have significantly higher averages than the FiltekTM Z350 XT composite resin (3M ESPE) groups
The bulk-fill composite resins have been launched to shorten the time in clinical sessions, inserting increments of up to 5.0 mm in thickness

Summary

Introduction

Composite resins are restorative materials extensively used in Dentistry due to their excellent aesthetic[1] physical and mechanical properties, which allows the reproduction of characteristics similar to dental structures[2] as well as minimal removal of healthy dental structure. The insertion of composite resins into the cavity requires more clinical time, since the incremental technique is the most appropriate[3]. Said resin allows the insertion of up to 4.0 mm thick increments without too much polymerization shrinkage[5]. Said decreased polymerization shrinkage derives from properties capable of reducing the contraction stress and increasing the pre-gel phase, which is characterized by more flexible polymer chains, allowing the material to flow freely through the cavity surface[6]. These materials provide higher transmission of light, allowing the reach of greater polymerization depth[6]

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