&lt;b&gt;Evaluation of the optical density of composite resins with the use of nanotechnology by means of intraoral radiographic system (CMOS)

Lilian Cristina Vessoni Iwaki,Mariliani Chicarelli Da Silva,Carina Gisele Costa Bispo,Flavia Martins Lacerda,Wilton Mitsunari Takeshita

doi:10.4025/actascihealthsci.v37i1.19961

<b>Evaluation of the optical density of composite resins with the use of nanotechnology by means of intraoral radiographic system (CMOS)

Lilian Cristina Vessoni Iwaki, Mariliani Chicarelli Da Silva + Show 3 more

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https://doi.org/10.4025/actascihealthsci.v37i1.19961

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Abstract

The aim of this study was investigate the optical density of four different brands of composite resins of nanotechnology. The composite resins Estelite Sigma Quick ® (Tokuyama), Esthet –X HD ® (Dentsply), 4 Seasons ® (Ivoclar Vivadent) and Filtek Z350XT TM (3M-ESPE) were inserted into cavities in transparent acrylic sheets, separated by thickness into 1, 2 and 3 mm. The images were imported into the software ImageTool ® 3.0 (UTHSCSA, EUA). Data were submitted to ANOVA and Tukey. The mean values of the composite resins 4 Seasons ® (2.71±0.20) and Filtek Z350XT TM (2.64±0.26) did not differ statistically for samples with thickness of 1 and 2 mm. However, for both thickness Estelite Sigma Quick ® (1.92±0.11) and Esthet-X HD ® (3.57±0.29) showed significant differences compared to the other composite resins (p = .012). All 3 mm-thick samples showed significant differences among themselves (Estelite Sigma Quick ® p < .001, Esthet-X HD ® p < .001, 4 Seasons ® p=.001 and Filtek Z350XT TM p = .003). Conclusion: Among the three thicknesses evaluated, Estelite Sigma Quick ® showed the lowest optical density, whereas the highest values were observed for Esthet X HD ® . The resins are studied according to the rules of optical density value thus being favorable clinical use.

Highlights

The optical density of composite resins is an important property for radiographic diagnosis (CURTIS JR. et al, 1990)
In 1981 the American Dental Association Council on Dental Materials and Devices (ADA, 1981), in accordance with specification n. 27 issued in 1977, stated that optical density is a necessary requirement in restorative materials
The present study aims to determine the optical density of four different brands of composite resins with the application of nanotechnology, with samples of different thicknesses, and the use of digital radiographic images

Summary

Introduction

The optical density of composite resins is an important property for radiographic diagnosis (CURTIS JR. et al, 1990). The optical density of composite resins is an important property for radiographic diagnosis According to the International Organization for Standardization (ISO) 4049, resins plates in thickness of 2 mm must present higher values than 2 mm EqAl determines that, in order for better distinction between tooth and restorative material, the optical density of composite resins must be greater than. 27 issued in 1977, stated that optical density is a necessary requirement in restorative materials. Optical density would assist the correct diagnosis of several clinical issues, such primary or secondary caries, excess of restorative material on the cervical margins of proximal surfaces, the proximal contour of restorations, the contact between the restorative material and the adjacent tooth, and the distinction between tooth and liner or restorative material of voids and cracks Optical density would assist the correct diagnosis of several clinical issues, such primary or secondary caries, excess of restorative material on the cervical margins of proximal surfaces, the proximal contour of restorations, the contact between the restorative material and the adjacent tooth, and the distinction between tooth and liner or restorative material of voids and cracks (CURTIS JR. et al, 1990; AKERBOOM et al, 1993; GU et al, 2006; DUKIĆ et al, 2012)

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