Color and Translucency of Resin Composites for Layering Techniques

Kamishima, Naoko; Ikeda, Takatsumi; Sano, Hidehiko

doi:10.4012/dmj.24.428

Cited by 76 publications

(94 citation statements)

References 13 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the translucency of a material increases, more light is absorbed until the relevant portion of the light is reflected. The different translucencies of dental materials have been investigated by several studies using the translucency parameter (TP) [9][10][11][12][13][14][15][16][17][18][19]. In all of the referenced studies, the TP was determined by measuring the values for L* (lightness), a* (redgreen chromatic coordinates), b* (yellow-blue chromatic coordinates) over W -background (values determined using a white background) and B -background (values determined using a black background) and then substituting them into the following equation:…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of material surface on the scanning error of a powder-free 3D measuring system

2015

View full text Add to dashboard Cite

OBJECTIVES This study aims to evaluate the accuracy of a powder-free three-dimensional (3D) measuring system (CEREC Omnicam, Sirona), when scanning the surface of a material at different angles. Additionally, the influence of water was investigated. MATERIALS AND METHODS Nine different materials were combined with human tooth surface (enamel) to create n = 27 specimens. These materials were: Controls (InCoris TZI and Cerec Guide Bloc), ceramics (Vitablocs® Mark II and IPS Empress CAD), metals (gold and amalgam) and composites (Tetric Ceram, Filtek Supreme A2B and A2E). The highly polished samples were scanned at different angles with and without water. The 216 scans were then analyzed and descriptive statistics were obtained. RESULTS The height difference between the tooth and material surfaces, as measured with the 3D scans, ranged from 0.83 m (±2.58 m) to -14.79 m (±3.45 m), while the scan noise on the materials was between 3.23 m (±0.79 m) and 14.24 m (±6.79 m) without considering the control groups. Depending on the thickness of the water film, measurement errors in the order of 300-1,600 m could be observed. CONCLUSIONS The inaccuracies between the tooth and material surfaces, as well as the scan noise for the materials, were within the range of error for measurements used for conventional impressions and are therefore negligible. The presence of water, however, greatly affects the scan. CLINICAL RELEVANCE The tested powder-free 3D measuring system can safely be used to scan different material surfaces without the prior application of a powder, although drying of the surface prior to scanning is highly advisable. AbstractObjectives This study aims to evaluate the accuracy of a powder-free 3D measuring system (CEREC Omnicam, Sirona), when scanning the surface of a material at different angles.Additionally, the influence of water was investigated. Materials and MethodsNine different materials were combined with human tooth surface (enamel) to create n = 27 specimens. These materials were: Controls (InCoris TZI, Cerec Guide Bloc), ceramics (Vitablocs ® Mark II and IPS Empress CAD), metals (gold and amalgam) and composites (Tetric Ceram, Filtek Supreme A2B and A2E). The highly polished samples were scanned at different angles with and without water. The 216 scans were then analyzed and descriptive statistics were obtained. ResultsThe height difference between the tooth and material surfaces, as measured with the 3D-scans, ranged from .83 (± 2.58) to -14.79 (± 3.45) µm, while the scan noise on the materials was between 3.23 (± .79) and 14.24 (± 6.79) µm without considering the control groups.Depending on the thickness of the water film, measurement errors in the order of 300-1600 µm could be observed. ConclusionsThe inaccuracies between the tooth and material surfaces, as well as the scan noise for the materials, were within the range of error for measurements used for conventional impressions and are therefore negligible. The presence of water, however, greatly affects the scan.Clinical Relevance The...

show abstract

Section: Introductionmentioning

confidence: 99%

“…The TP is closely correlated in inverse proportion to the thickness of the sample [9,10,13,15,20]. Furthermore, the shade of a material can lead to its having a different TP [10,11,14,21]. The translucency of enamel is always higher than that of dentine [9,14].…”

Section: Introductionmentioning

confidence: 99%

Influence of material surface on the scanning error of a powder-free 3D measuring system

2015

View full text Add to dashboard Cite

show abstract

“…The maximum thickness of 4.0 mm was described on a study by Kamishima and colleagues, who reported that enamel composite resins were not influenced by the background contrast at this thickness (5). To match tooth color, various shades of yellow and gray pigments are blended to white base material of traditional resin composites.…”

Section: Translucency Of Natural Teethmentioning

confidence: 99%

Color Selection and Reproduction in Dentistry Part 2: Light Dynamics in Natural Teeth

Schmeling

2016

Odovtos - Int J Dent Sc

View full text Add to dashboard Cite

Reproducción y selección del color en Odontología Parte 2: Dinámica de la luz sobre las piezas dentales ABSTRACT In the first article of this trilogy, it was demonstrated the great importance of the light source in the chromatic procedures and also the chromatic characteristics of color communication proposed by Munsell. In this second article, the focus is in Geometric Attributes and Optical Properties of natural teeth. The main features of translucency, opalescence and fluorescence will be described. According to the interaction of light with natural dental tissues, the desired optical qualities of the esthetic restorative materials will be associated. KEYWORDSColor; Translucency; Chroma; Opalescense; Fluorescense. RESUMENEn el primer artículo de esta trilogía, se demostró la gran importancia de la fuente de luz en los procedimientos cromáticos y también sobre las características cromáticas del color propuestas por Munsell. En este segundo artículo, la atención se centra en los atributos geométricos y las propiedades ópticas de los dientes naturales. Se describirán las principales características de translucidez, opalescencia y fluorescencia. Según la interacción de la luz con los tejidos dentales naturales se pueden asociar las cualidades ópticas deseadas de los materiales de restauración estética. PALABRAS CLAVE

show abstract

“…The layering technique attempts to replace dentin and enamel by placing a more translucent layer over a more opaque layer of resin composite to create a perception of depth from within the restoration. 7 However, studies have reported poor compatibility of resin composites of identical shade designation between pairs of shades, 8,9 and the color of the restoration was influenced by the optical properties of the enamel layer as well as those of the dentin layer. 7,10 On the other hand, incorporation of enamel and translucent layers on resin overlays increased curing light penetration through layered resin overlays.…”

Section: Introductionmentioning

confidence: 99%

“…7 However, studies have reported poor compatibility of resin composites of identical shade designation between pairs of shades, 8,9 and the color of the restoration was influenced by the optical properties of the enamel layer as well as those of the dentin layer. 7,10 On the other hand, incorporation of enamel and translucent layers on resin overlays increased curing light penetration through layered resin overlays. 11 Higher curing light penetration could enhance the light curing of DCRC beneath the resin overlays.…”

Section: Introductionmentioning

confidence: 99%

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

Chang

Hong

2014

Braz. oral res.

View full text Add to dashboard Cite

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.

show abstract

Color and Translucency of Resin Composites for Layering Techniques

Cited by 76 publications

References 13 publications

Influence of material surface on the scanning error of a powder-free 3D measuring system

Influence of material surface on the scanning error of a powder-free 3D measuring system

Color Selection and Reproduction in Dentistry Part 2: Light Dynamics in Natural Teeth

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

Contact Info

Product

Resources

About