Color Stability of Composites After Short-term Oral Simulation: An in vitro Study

Abstract

Background:Although most of the studies investigated color stability of different restorative materials, evaluation of color stability of composites after immersion in multiple beverages in the same day by an in vitro oral simulation study is unclear.Objective:To assess color change of different restorative materials at the end of days 1, 14, and 30 of immersion in multiple liquid types to mimic the oral environment in vitro.Method:Ten disc-shaped specimens were made from each of four different resin composites (Filtek Z250, Voco x-tra base, Beautifil Flow Plus, Beautifil II). Baseline color value of each sample was measured using a spectrophotometer. Each composite was respectively immersed in coffee, an orange/pomegranate juice mixture, black tea, and a mouth rinse on the same day to mimic daily liquid consumption of individuals. Color measurements were taken after 1, 14, and 30 days by spectrophotometer and color change values were calculated. Statistical analyses were executed by one-way ANOVA/Tukey HSD and repeated-measures ANOVA.Results:All materials showed significant color change after 1, 14, and 30 days (P < 0.01) of immersion in liquids, with the lowest color alteration observed at the 1st day and the highest observed after the 30th day. Among the materials tested, at each time point (1, 14, and 30 days), the lowest color alteration was detected in Filtek Z250 and the highest color alteration was detected in Beautifil II.Conclusion:Color alteration of composite resins is affected by composite type and storage time. With the exception of 1 day of storage, color changes of all materials were substantial and clinically unacceptable.

Minimally invasive aesthetic rehabilitation in composite resin: report of two clinical cases

“…The main disadvantage of the composite resin is the staining or discoloration of the restorative material after aging process in the oral environment induced by several extrinsic or intrinsic factors [20,21]. Therefore, the surface quality of restorations is considered a key factor for clinical success [22].…”

“…The existing restorations were removed with a spherical diamond bur #1014 (KG Sorensen, Barueri, Brazil), used under constant water irrigation (Figure 6b). Then, adequate isolation was performed using a rubber dam isolation modificated (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25) (Figure 6c). After the teeth preparation, the same adhesive protocol and materials applied in case 1 were performed.…”

Alterações Microestruturais Do Esmalte Dentário Submetidos a Imersões Em Águas Saborizadas Ácidas

“…Após 24 horas as amostras foram incluidos em resina acrílica autopolimerizável (VipiFlash, VIPI, Pirassuninga, SP, Brasil) (5mm de espessura e 12mm de diâmetro) deixando exposto apenas a superfície do topo da resina composta, possibilitando a fixação da amostra em um plano de apoio para o deslocamento do leitor do rugosímetro. O acabamento e polimento das amostras foi realizado 24 horas após a inclusão em resina acrílica com o auxílio de discos abrasivos Praxis (TDV Dental Ltda., Pomerode, SC, Brasil), em ordem decrescente de abrasividade por um período de 10 segundos cada (ÖZDAŞ et al, 2016).…”

Alteração de Cor de Resinas Compostas Imersas em Diferentes Bebidas

“…Ruyter et al 24 , ΔE>1,0, é clinicamente perceptível e ΔE>3,3 é clinicamente inaceitável. A alteração de cor de resinas compostas é influenciada pelo tipo de compósito (tipo da matriz de resina e das partículas de carga, tamanho das partículas de carga) e tempo de imersão nas soluções 20 . Szesz et al 21 relataram que as alterações de cor promovidas pelo café, Coca-Cola ® e pelo vinho tinto foram consideradas perceptíveis ao olho humano.…”