Optical properties of composite restorations influenced by dissimilar dentin restoratives

Marjanovic, Jovana; Veljović, Djordje; Stašić, Jovana N.; Savić-Stanković, Tatjana; Trifković, Branka; Miletić, Vesna

doi:10.1016/j.dental.2018.01.017

Cited by 28 publications

(32 citation statements)

References 31 publications

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“…Conversely, HAP resulted lower Δ E oo in Z250_HAP than Gradia_HAP group. Lower initial chromaticity of Z250 than Gradia, as previously determined, could be related to lower color changes in Z250 after staining.…”

Section: Discussionsupporting

confidence: 76%

“…No differences in ΔE oo were found between corresponding groups of different composites covering Biodentine or everX. Conversely, HAP resulted lower ΔE oo in Z250_HAP than Gradia_HAP group.Lower initial chromaticity of Z250 than Gradia, as previously determined,15 could be related to lower color changes in Z250 after staining.Color changes of control universal composites, microhybrid Z250and Gradia and nanohybrid Z550, were in the ΔE ab range of 7.3-9.8.This was about 20% to50% greater color difference compared to a recent in vivo study reporting ΔE ab~6 .0 as color changes of two composites (microhybrid IPS Empress Direct and nanofilled Z350) after only 10 days of daily exposure to 140 mL of red wine 33. This finding illustrates the applicability of in vitro storage conditions, which, although oversimplified, may indeed reveal color differences comparable to in vivo setting.…”

supporting

confidence: 70%

“…A positive correlation was previously established between composite translucency and the extent of color differences after staining . EverX was found to increase the overall translucency of the restoration irrespective of the overlying composite compared to the control composite restorations of the same final shade and thickness . This was associated with higher translucency induced by millimeter‐long glass fibers in everX .…”

Section: Discussionmentioning

confidence: 99%

“…[24][25][26][27][28][29][30] Color differences were more evident for a particular universal composite covering different dentin replacement materials than color differences between different composites covering the same dentin replacement material (see Figure 2). Although color is measured on the top composite surface, delicate interaction of dissimilar optical properties (namely, color and translucency) of composite and dentin replacement material 15 clearly affects the overall color perception after staining. Greater color differences may be associated with higher translucency of multi-material "sandwich" restorations as was found in everX groups.…”

Section: Discussionmentioning

confidence: 99%

“…12 Dentin replacement materials with unfavorable esthetic properties, such as calcium-silicate cements (eg, Biodentine) and experimental hydroxyapatite (HAP) inserts, require a 2 mm thick capping composite layer to neutralize the effect of the underlying material on color and translucency. 15 Aside from its use in pulp capping and endodontic procedures, Biodentine is recommended as a temporary restorative for up to 6 months as well as a permanent dentin replacement material under composite fillings. 16 Biodentine has lower tooth discoloration potential than mineral-trioxide aggregate (MTA) largely due to the replacement of the radiopacifier bismuth oxide with zirconium oxide.…”

Section: Introductionmentioning

confidence: 99%

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Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

Miletić

Marjanovic

Veljović

et al. 2019

J Esthet Restor Dent

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Objective To determine color changes in bulk‐fill composite and universal composite restorations with dissimilar dentin replacement materials in extracted teeth after staining in red wine. Materials and Methods Cylindrical, 4 mm deep, class I cavities were prepared in 140 human molars. Bottom 2 mm was restored with Biodentine (Septodont), everX posterior (GC) or experimental HAP inserts. Each dentin replacement material was covered with a 2‐mm layer of a universal composite Filtek Z250 or Z550 (3M ESPE) or Gradia Posterior (GC). Groups combining top composite layer and the underlying dentin replacement were designated as “composite_dentin replacement.” Filtek Bulk Fill (3M ESPE) and Tetric EvoCeram Bulk Fill (Ivoclar Vivadent) were placed as a single 4‐mm layer. Color measurements were performed using Vita Easyshade 4.0 (Vita Zahnfabrik) initially and after 48‐hours storage in red wine at 37°C. Results Color differences (ΔEoo) ranged between 2.1 ± 0.7 (Z250_HAP) and 7.8 ± 1.1 (Z550_everX). EverX resulted in higher ΔEoo of the overlying composite than HAP (P < .001) and Biodentine (P = .006). Generally, ΔEoo was affected more by decreasing lightness (ΔL′) than changes in chroma (ΔC′). Conclusions EverX resulted in higher ΔEoo of the restoration than Biodentine and experimental HAP after staining in red wine. No significant differences in ΔEoo may be expected in different composites with the same underlying dentin replacement material. The same was generally true for bulk‐fill and universal composites. Clinical Significance Similar extent of color changes may be expected in bulk‐fill and universal composites. Highly translucent everX might exhibit greater color differences irrespective of the capping composite than non‐translucent materials. Clinicians have a wider choice of composite materials to cover a particular dentin replacement material, for example, everX or Biodentine, as similar color differences may be expected in various overlying composite brands.

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Section: Discussionsupporting

confidence: 76%

supporting

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

Miletić

Marjanovic

Veljović

et al. 2019

J Esthet Restor Dent

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Is it possible to determine the optical properties of resin composites with clinical spectrophotometers?

Soares

Bragança

Leal

et al. 2021

Color Research & Application

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The present study aimed to determine how spectrophotometer type and background blackness affect the optical evaluation of resin composites. Cylindrical specimens were built using one resin composite, provided with translucencies named Effect, Enamel, Body, and Dentin (n = 3). The CIELAB color coordinates were assessed over black and white backgrounds using a handheld spectrophotometer designed for laboratory readings (SP60, X‐Rite) and a spectrophotometer designed for clinical application (Easyshade V5, Vita Zahnfabrik). The black portion of a grayscale target (ColorChecker) and the black trap portion of the calibration reference of the spectrophotometer were used. Color differences between the devices were calculated, as well as the translucency parameter and contrast ratio. Data were analyzed by repeated‐measures ANOVA and linear regressions (α = .05). In general, Easyshade resulted in higher values for all color coordinates than the SP60, irrespective of the background. Easyshade was unable to measure the color of composite Effect over black backgrounds. For other composite translucencies, both spectrophotometers yielded similar values of translucency parameter and contrast ratio, and the blackness of the black background did not affect these results. The highest agreement for the translucency parameter and contrast ratio values was observed for the composite Dentin. High agreement was observed between the two spectrophotometers regarding the translucency parameter and contrast ratio values. However, the clinical spectrophotometer was unable to measure the color of the more translucent composite over a black background and overestimated the color coordinates.

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Dissimilar sintered calcium phosphate dental inserts as dentine substitutes: Shear bond strength to restorative materials

et al. 2020

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The application of sintered calcium phosphate dental inserts in the central part of tooth cavities can reduce amount of embedded dental composite and polymerization shrinkage of final dental fillings. The aim of this study was to analyze comparatively physico‐chemical and mechanical properties of dental inserts and shear bond strength (SBS) between three dissimilar hydroxyapatite‐based dental inserts and different restorative materials, after application of different clinical protocols. Starting from two different hydroxyapatite nano powders and nanostructured stabilized zirconia (YSZ), monophasic two‐step sintered dense HAp inserts (TSSHAp), biphasic single‐step sintered controlled porous inserts (HAp/TCp), and single‐step sintered reinforced HAp/YSZ inserts were processed and characterized. Obvious differences in the microstructure of inserts surface were visualized after etching with 37% phosphoric acid. Fracture toughness of sintered inserts was ranged between 1.01 and 1.85 MPam1/2 (maximum value in the case of HAp/YSZ), while hardness values were in the range of 3.71–5.22 GPa (maximum value in the case of TSSHAp). Acid etching before application improved SBS between inserts and Maxcem compared to direct cement application. TSSHAp and HAP/TCp inserts showed comparable and relatively high SBS values, certainly higher compared to HAp/YSZ inserts. Slightly higher SBS values were measured in the case of TSSHAp insert group, and the highest mean SBS value of 18.51 MPa was determined between TSSHAp inserts and Filtek Z250_SBU following the “self‐etch” protocol.

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Optical properties of composite restorations influenced by dissimilar dentin restoratives

Abstract: A 2mm thick layer of composite covering dentin restoratives with unfavorable esthetics is recommended for a final 'sandwich' restoration that is esthetically comparable to a conventional, mono-composite control restoration.

Cited by 28 publications

References 31 publications

Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

Is it possible to determine the optical properties of resin composites with clinical spectrophotometers?

Dissimilar sintered calcium phosphate dental inserts as dentine substitutes: Shear bond strength to restorative materials

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