Shade Dotaz Zobrazit nápovědu
126 s. ; 20 cm
- MeSH
- nádory psychologie MeSH
- péče o umírající MeSH
- Publikační typ
- populární práce MeSH
- Konspekt
- Psychologie
- NLK Obory
- psychologie, klinická psychologie
- zdravotní výchova
OBJECTIVE: The subject of this case report is the application of a newly developed workflow for objective shade communication sans visual shade assessment or the use of shade guides. CLINICAL CONSIDERATIONS: Clinical complications stemming from issues relating to esthetic integration can present a burden on the restorative team, often resulting in strenuous relationships among its members. The faithful imitation of the optical appearance of dental hard tissues with direct- and indirect restorations has been at the center of interest in a great number of publications from the realm of esthetic dentistry over the past 40 years. The present report describes a new approach to objective shade communication, by transcending the role of dental photography from its purely descriptive purpose to the level of quantification, thus abandoning the use of the established shading regimes and replacing them with a patient personal shade recipe based on the CIELAB color space instead. CONCLUSIONS: Objective shade communication is possible with the eLAB system by combining numeric shade quantification with dental photography. CLINICAL SIGNIFICANCE: The eLAB system presents a viable alternative to the traditional approach to shade communication and shade matching in dentistry.
- MeSH
- barva MeSH
- barvení protéz * MeSH
- fotografie zubní * MeSH
- komunikace MeSH
- lidé MeSH
- rozmnožování MeSH
- zubní protéza - design MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- kazuistiky MeSH
This study evaluated the effect of the structural color phenomenon in resin composites (RCs) on the color adjustment of restorations by investgating their color reproduction performance in human incisors of various shade. Cervical cavities were filled with a single-shade RC with 260 nm spherical fillers (Omnichroma (OMN)), conventional A2-shade RCs (Estelite Σ Quick or Clearfil AP-X), or experimental RCs with 5-50 nm fumed silica fillers (R1) and 100 nm spherical fillers (R2). Color parameters (L*C*h*) were measured using a CIE XYZ camera along the centerline of the restorations, and the color difference (∆E00) between corresponding areas of intact and restored teeth was calculated. Additionally, the reflectance spectra of OMN, R1, and R2 were investigated. OMN exhibited significantly lower ∆E00 than other tested RCs (p<0.05) and its reflection spectrum ranged from blue to red, while a blue peak was observed with R1 and R2, indicating a higher color adjustment potential of OMN.
- MeSH
- barva MeSH
- lidé MeSH
- složené pryskyřice * MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
Shade guide selection is one of the elementary procedures commonly performed prior to a tooth restorative or prosthodontic treatment. Natural tooth appearance is very complex. A dentist or a technician can easily misunderstand particular aspects of light behaviour, which lead to an inappropriate shade selection and unsatisfactory esthetic results. It is essential to understand the basics of color – HSV (Munsell) color system. This article emphasizes photography as a useful tool for precision selection of the most important parameters, Value, Hue and Chroma in a basic photoprotocol.
- MeSH
- barva MeSH
- dospělí MeSH
- estetika stomatologická * MeSH
- fotografie zubní metody MeSH
- lidé MeSH
- řezáky MeSH
- zubní korunky * MeSH
- zubní porcelán MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
3rd ed. xxxi, 1103 s. : il.
- Konspekt
- Patologie. Klinická medicína
- NLK Obory
- urgentní lékařství
- terapie
Workbook with drug cards and skill sheets
2nd ed. 414 s., [70] s. příloh : il., tab. ; 28 cm + 70 s. příl.
- Konspekt
- Patologie. Klinická medicína
- NLK Obory
- urgentní lékařství
- zdravotní výchova
The recently introduced resin composites with a universal shade are claimed to match any tooth color. In this study, it was examined how composite thickness affects the color adjustment of conventional and universal-shade composites to background dentin. Thirty sound human central incisors of various shade were used, and color differences between their intact labial surfaces, exposed dentin surfaces and composite restorations (thickness 1-3 mm) were evaluated. In addition, the translucency, light transmission characteristics, and spectral reflectance of the composites were measured. The results showed that universal-shade composites outperformed conventional composites of A2 shade in the adjustment of hue and chroma (p<0.05) but not in lightness (p>0.05). The color adjustment potential of all composites significantly decreased as their thickness increased (p<0.05). The effect of thickness on Omnichroma and Omnichroma Flow was less marked, presumably because of their higher translucency (p<0.05) and structural coloration which induces light reflectance in the yellow-to-red range.
- MeSH
- barva MeSH
- dentin * MeSH
- lidé MeSH
- složené pryskyřice * chemie MeSH
- testování materiálů MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
