Effect of immersion into solutions at various pH on the color stability of composite resins with different shades

Abstract

ObjectivesThis study examined the color changes of a resin composite with different shades upon exposure to water with different pH.Materials and MethodsNanohybrid resin composites (Filtek Z350XT, 3M ESPE) with four different shades (A2, A3, B1, and B2) were immersed in water with three different pH (pH 3, 6, and 9) for 14 day. The CIE L*a*b* color coordinates of the specimens were evaluated before and after immersion in the solutions. The color difference (ΔE*) and the translucency parameter (TP) were calculated using the color coordinates.ResultsΔE* ranged from 0.33 to 1.58, and the values were affected significantly by the pH. The specimens immersed in a pH 6 solution showed the highest ΔE* values (0.87 - 1.58). The specimens with a B1 shade showed the lowest ΔE* change compared to the other shades. TP ranged from 7.01 to 9.46 depending on the pH and resin shade. The TP difference between before and after immersion in the pH solutions was less than 1.0.ConclusionsThe resulting change of color of the tested specimens did not appear to be clinically problematic because the color difference was < 1.6 in the acidic, neutral, and alkaline solutions regardless of the resin shade, i.e., the color change was imperceptible.

Pengaruh Jus Jeruk Dan Minuman Berkarbonasi Terhadap Kekerasan Permukaan Resin Komposit

“…1 Bahan tersebut digunakan untuk merestorasi karies, abrasi enamel dan juga untuk estetika karena memiliki kesesuaian yang baik dengan gigi. 2 Resin komposit memiliki sifat mekanik salah satunya adalah kekerasan permukaan.…”

In situ evaluation of color stability and hardness' decrease of resin‐based composites

“…Several in vitro studies were conducted to evaluate the color stability of resin‐based composites when exposed to distinct solutions . It is known that some specific beverages (e.g., coffee and red wine) can alter materials' mechanical and optical properties, damaging the quality of restorations .…”

“…9 Several in vitro studies were conducted to evaluate the color stability of resin-based composites when exposed to distinct solutions. [10][11][12][13][14][15] It is known that some specific beverages (e.g., coffee and red wine) can alter materials' mechanical and optical properties, increasing the discoloration and wear of these restorative materials. 21 Furthermore, ethanol can cause material's swelling owing to higher amount of [AOH] present in their molecule, which decrease the material's mechanical properties.…”

Discoloration Effects of Traditional Turkish Beverages on different Composite Restoratives

“…[9][10][11][12][13][14][15] However, there are some different kinds of beverages, such as traditional ones, which may have probable staining potential. Tamarind syrup, ottoman syrup, and turnip juice are some traditional Turkish beverages.…”

“…Especially, the most colored resin composite, Clearfil Majesty ES-2 was the least filler containing one. Therefore, based on the other studies, 3,[6][7][8]12,13 it can be argued that the filler content rate may have a significant effect on the color stability of resin composites. On the contrary, Clearfil Majesty Posterior was the second-most colored resin at the end of the study.…”