Comparison of Various Resin Composite Shades and Layering Technique with a Shade Guide

Costa, Juliana da; Fox, P. G.; Ferracane, Jack L.

doi:10.1111/j.1708-8240.2010.00322.x

Cited by 43 publications

(52 citation statements)

References 17 publications

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“…translucency, opacity, and surface gloss) may be affected by several factors including quality and quantity of light reflection at the surface, dispersion, diffraction and interference of light at the surface, roughness and anatomical morphology of surface, properties and structures of enamel and dentin (2,(17)(18)(19), and variations of blood flow in the dental pulp (20,21). Light also affects the gum and lip color (22).…”

Section: Discussionmentioning

confidence: 99%

“…Orthodontists or patients may encounter unwanted changes on the enamel surface or structure, such as discoloration, white spots, microcracks, fractures, and abrasions during and after fixed orthodontic treatment (FOT) because of, e.g., diet, oral care, bonding materials and techniques, composites, appliances, debonding, and clean-up procedures (1)(2)(3). Bonding materials and composites of FOT are the most prominent factors responsible for enamel color alterations (3,4).…”

Section: Introductionmentioning

confidence: 99%

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Effects of contemporary orthodontic composites on tooth color following short-term fixed orthodontic treatment: a controlled clinical study

Çörekçi¹,

Toy²,

Öztürk³

et al. 2015

Turk J Med Sci

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IntroductionOrthodontics is a unique science in dentistry since its workspace sets on the external surface of enamel when using fixed appliances for treatment. Orthodontists or patients may encounter unwanted changes on the enamel surface or structure, such as discoloration, white spots, microcracks, fractures, and abrasions during and after fixed orthodontic treatment (FOT) because of, e.g., diet, oral care, bonding materials and techniques, composites, appliances, debonding, and clean-up procedures (1-3). Bonding materials and composites of FOT are the most prominent factors responsible for enamel color alterations (3,4). Enamel discolorations may occur by direct absorption of food colorants and products arising from the corrosion of the orthodontic appliance into resin tags (5,6). The long-term presence of these residues in the enamel tags during fixed treatment makes the color stability of these materials critical for tooth color (7).A great deal of orthodontic research has concentrated on the assessment of the physical and mechanical performances of the adhesive resins. However, comparatively few studies have investigated the effects of bonding materials used in brackets on enamel color (3,5,8-10) and only 2 clinical studies examined the color alterations of teeth associated with FOT (3,4). According to the findings of those studies, visible enamel color changes may occur with fixed appliances, which would be detected in clinical trials (3,4). Although enamel color was changed after orthodontic treatment, the lightcured composite was associated with lower discoloration rates than chemically cured resins (4). According to Karamouzos et al. (4), orthodontists may choose the use of no-mix and light-cured composites, whose effects on enamel color were the same. However, a recent in vitro study about discoloration of these types of orthodontic composites revealed that unsatisfactory color stability was Background/aim: To determine the color alterations of natural teeth associated with different orthodontic composites used in comprehensive short-term treatment.Materials and methods: Twenty-two patients were treated with fixed appliances and 22 untreated subjects were also evaluated. Lower incisors were bonded with different orthodontic composites: 42 with Grengloo, 41 with Light Bond, 31 with Kurasper F, and 32 with Transbond XT. The color parameters of the Commission Internationale de l'Eclairage (CIE) were measured for each tooth with a spectrophotometer. Color assessment in relation to time, adhesive material, and their interaction was made with 2-way mixed analysis of variance (ANOVA) and 1-way ANOVA for the color differences (∆E*). Further analyses were done using Tukey's honestly significant difference tests and paired-samples t-tests. Results:The color of teeth was affected by treatment. The mean L* and a* values increased, whereas the mean b* values decreased. Total color differences of teeth demonstrated visible color changes clinically after treatment, ranging from 1.12 to 3.34 ∆E units. However, there w...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of contemporary orthodontic composites on tooth color following short-term fixed orthodontic treatment: a controlled clinical study

Çörekçi¹,

Toy²,

Öztürk³

et al. 2015

Turk J Med Sci

View full text Add to dashboard Cite

show abstract

“…In a previous study, a VITA Classical Shade tab was used as a control with the metal tab holder removed. 16 However, the removal of the lingual part of the tab holder could affect the thickness of the shade tab, and thereby affect the color of the shade tab. In this study, a resin denture tooth was selected for the control because the lingual part of the denture tooth is similar in shape to that of a human tooth without any modifications that could affect the color measurement procedure.…”

Section: Discussionmentioning

confidence: 99%

“…8 Costa et al 16 compared the final shade of resin composites prepared using the layering technique (enamel layer over dentin layer) with the corresponding VITA Classical Shade tabs and reported that only 28% (n = 72) of layered resin composites resulted in ΔE < 3.3, below the clinically perceptible limit.…”

Section: Discussionmentioning

confidence: 99%

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Effects of layering technique on the shade of resin overlays and the microhardness of dual cure resin cement

Chang

Hong

2014

Braz. oral res.

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The purpose of this study was to assess the color of layered resin overlays and to test the early microhardness of dual cure resin cement (DCRC) light cured through the layered resin overlays. Resin overlays of 1.5 mm thickness were fabricated with the A3 shade of Z350 (Group 1L), the A3B and A3E shades of Supreme XT (Group 2L), and the A3, E3, and T1 shades of Sinfony (Group 3L) using one, two, and three layers, respectively (n = 7). Each layer of the resin overlays was set in equal thickness. The color of the resin overlays was measured with a colorimeter and compared with an A3 shade resin denture tooth. DCRC was light cured through the resin overlays, and the early microhardness of the DCRC was measured. The ΔE value between the denture tooth and the resin overlays and the Vickers hardness number (VHN) of the DCRC were analyzed with one-way ANOVA and Tukey's HSD test. The color differences were 8.9 ± 0.5, 5.3 ± 1.0, and 7.3 ± 0.5 and the VHNs were 19.4 ± 1.1, 21.1 ± 0.9, and 29.3 ± 0.6 for Groups 1L, 2L, and 3L, respectively. Therefore, to match the designated tooth color of resin inlays and to increase the early microhardness of DCRC, layered resin inlays are more appropriate than single-dentin-layer resin inlays. However, the translucent layer should be used cautiously because the color difference of resin inlays with a translucent layer was affected more than those without a translucent layer.

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Understanding Color

Paravina¹

2018

Ronald E. Goldstein's Esthetics in Dentistry

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Comparison of Various Resin Composite Shades and Layering Technique with a Shade Guide

Cited by 43 publications

References 17 publications

Effects of contemporary orthodontic composites on tooth color following short-term fixed orthodontic treatment: a controlled clinical study

Effects of contemporary orthodontic composites on tooth color following short-term fixed orthodontic treatment: a controlled clinical study

Effects of layering technique on the shade of resin overlays and the microhardness of dual cure resin cement

Understanding Color

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