Effect of Ceramic Thickness and Shade on Mechanical Properties of a Resin Luting Agent

Passos, Sheila Pestana; Kimpara, Estevão Tomomitsu; Bottino, Marco Antônio; Rizkalla, Amin S.; Santos, Gildo Coelho

doi:10.1111/jopr.12140

Cited by 17 publications

(26 citation statements)

References 33 publications

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“…A number of studies evaluated the degree of underlying resin cement polymerization at various ceramic thicknesses and reported conflicting results. Moraes et al 24 detected no significant differences in DC of dual-cured resin cements in 0.7, 1.4, and 2.0 mm thick ceramics, and Passos et al 32 also reported no significant differences in hardness between 1.0 and 3.0 mm thick ceramic. By contrast, Bansal et al 33 reported a significant decrease in DC of resin cement in 4 mm thick leucite-reinforced ceramic or IPS e.max Press compared with 2 or 3 mm plates.…”

Section: Discussionmentioning

confidence: 97%

Influence of glass-based dental ceramic type and thickness with identical shade on the light transmittance and the degree of conversion of resin cement

Shin

Kim

et al. 2018

Int J Oral Sci

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The purpose of this study was to assess the influence of the types and thicknesses of glass ceramic plates on light transmittance and compare the degrees of conversion (DC) of resin cement under the ceramic materials. Three ceramic plates with thicknesses of 0.5, 1.0, 2.0, and 4.0 mm were fabricated from each of five commercial ceramic blocks in shade A2: high-translucency and low-translucency IPS Empress CAD (Emp_HT and Emp_LT); high-translucency and low-translucency IPS e.max CAD (Emx_HT and Emx_LT); and Vita Mark II (Vita). The translucency parameter was obtained using a colorimeter. The light transmittance rate was measured using a photodetector attached to an optical power meter. The DC of a resin cement (Variolink N) underneath the ceramic plates was examined by Fourier transform infrared spectroscopy. The translucency parameter, light transmittance rate, and DC showed significant differences by ceramic type and thickness (P < 0.05). The Emp_HT specimens showed the highest light transmission and DCs, and the Emx_LT showed the least light transmission and the lowest DCs. The high-translucency Empress showed significantly higher DCs than the low-translucency types (P < 0.05), but there was no significant difference in e.max (P > 0.05). Both type and thickness of the glass ceramics significantly influenced the light transmittance and DC of the light-cured resin cement beneath the ceramic of the same shade.

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Section: Discussionmentioning

confidence: 97%

Influence of glass-based dental ceramic type and thickness with identical shade on the light transmittance and the degree of conversion of resin cement

Shin

Kim

et al. 2018

Int J Oral Sci

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“…Regarding the translucency, it has been reported that the higher the opacity, as well as the higher saturation, the lowest transmission of light source to cementing agent, which results in lower physicochemical properties ( 3 , 13 - 15 ). As observed in this research, the opaquer lithium disilicate ceramics showed lower DC during cementation compared to more translucent ceramic.…”

Section: Discussionmentioning

confidence: 99%

“…In order to minimize this problem, amine free resin cements have been recently introduced in market to promote the esthetic longevity of indirect restorations ( 13 , 14 ). Flowable composite can also be used ( 8 ), but these systems have physical activation only, and it is estimated that the light irradiance emitted by light curing unit that reaches the cement is reduced when it passes through the ceramic, reducing the degree of conversion (DC) and consequently the mechanical properties of material, which may affect the durability of indirect restorations ( 6 , 11 , 13 , 15 , 16 ). This event is dependent on light intensity, curing unit, ceramic thickness, opacity, among others ( 5 , 9 , 13 , 15 , 17 ).…”

Section: Introductionmentioning

confidence: 99%

Influence of thickness and translucency of lithium disilicate ceramic on degree of conversion of resinous materials

Liporoni¹,

Ponce²,

Freitas³

et al. 2020

J Clin Exp Dent

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Background In this study was assessed the degree of conversion (DC) of amine-free resin cements light cured through lithium disilicate-reinforced ceramics at different thicknesses and translucency. Material and Methods Specimens were divided into 21 groups (n = 5) according to luting agent used: Variolink Esthetic LC (Light shade), RelyX Ultimate (A1 shade), and Filtek Z350 XT Flow (A1 shade); the ceramic translucency: low (LT) and high (HT); and the ceramic thickness: no ceramic (control), 0.5 mm, 1 mm, and 2 mm. A Teflon mold with (5 x 5 x 0.5 mm) was used to standardize the cement and over it the ceramic block from each group was placed. Set was cured using a polywave LED light (1200 mW/cm2 - Bluephase G2) for 40 s. FTIR spectra of uncured and cured materials was obtained and DC calculated from the height of the peaks 1610 and 1640 cm-1. Data were submitted to ANOVA followed by Tukey’s test (α = 0.05). Results There was a significant difference for luting agents ( p < 0.0001) and translucency ( p = 0.025), but not for thickness ( p = 0.73). Dual amine-free RelyX Ultimate showed the lowest DC values and higher translucency promoted higher DC. Conclusions Dual amine-free cement showed the lowest monomer conversion and higher translucency ceramics promoted a higher DC. Key words: Ceramic, degree of conversion, resin cement, thickness, translucency.

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“…Ceramic material characteristics can affect the light transmitting and resin cement's polymerization (27). Inadequate polymerization can modify physical and mechanical properties of the resin cement (28). No ceramic material was used in this study.…”

Section: Study Limitationsmentioning

confidence: 99%

The Effect of Color Selection on the Color Stability of the Resin Cement

Tanış¹,

Akay²

2017

meandros

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Bulgular: En düşük ΔE değeri grup 1'de gözlendi. Grup 2'de, grup 3'e kıyasla daha yüksek ΔE değeri elde edilse de her iki grup arasında istatistiksel olarak anlamlı fark bulunamadı.Sonuç: Yarı saydam baz ve yarı saydam katalizör karışımı sonucunda klinik olarak kabul edilebilir bir renk değişimi gözlenirken, B1 baz, A3 katalizör ve A1 baz, A3 katalizör karışımları ise klinik olarak kabul edilebilir değerlerin üzerinde renk değişimi göstermiştir. Rezin simanın rengi simanın renk stabilitesi üzerinde kısmen etkili olmuştur. Objective:The aim of this study was to determine effect of shade selection on resin cement's color stability. MaterialsandMethods:Ten resin cement samples in dimensions of 10 mm diameter and 2 mm thickness for each group [group 1: Translucent base and translucent catalyst, group 2: Bleach XL (B1) base and yellow (A3) catalyst, group 3: White (A1) base and A3 catalyst] totally 30 samples were prepared. Color coordinates of each sample were recorded after polymerization and 5000 thermal cycles. Color variation (ΔE) was calculated for each sample and statistical analyses were performed. Results:The lowest ΔE values were obtained for group 1. Group 2 showed higher ΔE values than group 3 however there were no statistical difference. Conclusion:Translucent base and translucent catalyst mixture showed clinically acceptable color stability while B1 base and A3 catalyst and A1 base and A3 catalyst mixtures did not show clinically acceptable color stability. Shade of the resin cement partially effected its color stability.Ad dressforCor res pon den ce/Ya zış maAd re si:

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Effect of Ceramic Thickness and Shade on Mechanical Properties of a Resin Luting Agent

Abstract: Variolink II irradiated through ceramic with the lowest chroma exhibited the highest elastic modulus; therefore, the light activation method might not be the same for all clinical situations.

Cited by 17 publications

References 33 publications

Influence of glass-based dental ceramic type and thickness with identical shade on the light transmittance and the degree of conversion of resin cement

Influence of glass-based dental ceramic type and thickness with identical shade on the light transmittance and the degree of conversion of resin cement

Influence of thickness and translucency of lithium disilicate ceramic on degree of conversion of resinous materials

The Effect of Color Selection on the Color Stability of the Resin Cement

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