The effect of accelerated aging on the color stability and translucency of novel zirconia reinforced rice husk dental composite resin in different infusion media

Lin, Galvin Sim Siang; Ghani, Nik Rozainah Nik Abdul; Ismail, Noor Huda; Noorani, Tahir Yusuf

doi:10.4322/bds.2021.e3046

Cited by 1 publication

(1 citation statement)

References 31 publications

(56 reference statements)

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“…In this study, the effect of silica-coating on zirconia by sol-gel process on the color change of zirconia was evaluated. Regarding color stability test, Previous studies suggested that color value of ΔE<1.3 is imperceptible to the human eye, while a value of ΔE>3.7 is considered as clinically undesirable [14]. However, the findings in our study revealed that the highest ΔE values among the three groups were noted in silica-aging group with values of ΔE=3.27 ± 0.72 the color change still below the clinically perceptible threshold.…”

Section: Discussioncontrasting

confidence: 50%

Influence of nanosilica coating on the color and the microleakage of zirconia ceramics

Abdelnabi

Mohsen²

2022

ijhs

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Objective The purpose of this study was to assess the effect of Nano-silica Coating on the Color and the Microleakage of Zirconia Ceramics. Materials and methods: Eighty-five specimens of commercially available Yttrium-stabilized-zirconia ceramics were constructed and divided into forty-five discs (8 mm in diameter) with thickness (1.2mm) They were divided into three groups (thermocycling – nano-silica surface treatment – and thermocycling with nano-silica surface treatment) to assess the color parameters, while the other forty samples were divided into ( control group – thermocycling – nano-silica surface treatment – and thermocycling with nano-silica surface treatment) to perform a fully contoured crowns to assess the microleakage. Initial color measurements were taken using a digital spectrophotometer based on CIE L*a*b* color system using a spectrophotometer Standard permanent molar tooth preparation was conducted into a full veneer preparation. Nano silica sol-gel material painted on the fitting surface of zirconia ceramics in groups of nano-silica and nano-silica with thermocycling surface treatment and processed to firing that were finally cemented on the prepared teeth using resin adhesive luting agent. Samples in aged group were subjected to 5000 thermal cycles then crown samples were sectioned to measure the microleakage. Color measurements of all samples were measured again.

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Section: Discussioncontrasting

confidence: 50%