Evaluation of colour change and surface roughness of two resin-based composites when exposed to beverages commonly used by children: an in-vitro study

G Elwardani,A Mahmoud,A A Sharaf

doi:10.1007/s40368-018-0393-1

Abstract

AimTo evaluate and compare the surface roughness and colour change of microhybrid and nanocomposite after exposure to beverages commonly used by children.MethodsThirty discs were prepared using Filtek Z250 and Filtek Supreme composites. Discs were immersed in distilled water, orange juice and Coca-Cola. Colour and surface roughness were measured at baseline and on days 15 and 30.ResultsFiltek Z250 and Filtek Supreme showed no significant difference in surface roughness and colour change at all measurement times. Immersion solution had a significant effect on surface roughness as well as colour change. Specimens immersed in Coca-Cola demonstrated the highest effect, followed by those immersed in orange juice, while specimens immersed in distilled water had the least effect. There was a significant increase in surface roughness and colour change over time. The change in colour was more evident in the period between baseline measurements and after 15 days. There was a significant interaction between media type and time.ConclusionsBoth composites showed no significant difference in roughness and colour change at all measurement times. There was a significant increase in surface roughness and colour change in all immersion solutions tested over time. Coca-Cola caused unacceptable colour change.

Highlights

A common problem confronting paediatric dentists is the management of carious/fractured anterior teeth
Independent sample t-test showed no significant difference between Filtek Z250 and Filtek Supreme at all times of measurements
Specimens immersed in Coca-Cola had the most change in colour, followed by those immersed in orange juice, while specimens immersed in distilled water had the least change

Summary

Introduction

A common problem confronting paediatric dentists is the management of carious/fractured anterior teeth. The introduction of nano-sized filler particles resulted in slight enhancement of the mechanical and physical properties, while the most notable improvement was in the optical properties. This can be explained by the small diameter of nanofillers which is a fraction of the wavelength of visible light (400–750 nm), the human eye cannot detect these particles. Manufacturers recommend the use of microhybrid and nanocomposite. They are well accepted as universal composites as they can be used for both anterior and posterior teeth (Mitra et al 2003)

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