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  2. Mehrzweckhartgips

Mehrzweckhartgips

Übersetzung

  • multipurpose dental stone
  • utility dental stone
  • general-purpose dental stone

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Word of the day

English German
opaquer modifier Intensiv-Opaker

Focus text of the month

Shade-taking for restorations

Shade-taking for restorations

Mimicking the positioning, contours and optical surface properties of adjacent and opposing natural teeth as realistically as possible is an important part of integrating dental prostheses inconspicuously into the mouth. The optical…


Shade-taking for restorations

Mimicking the positioning, contours and optical surface properties of adjacent and opposing natural teeth as realistically as possible is an important part of integrating dental prostheses inconspicuously into the mouth. The optical surface properties are summarized by the term "tooth shade" despite the fact that they include a wide range of parameters such as shade, shade gradient, brightness, shade saturation, translucency (light shimmering through light-scattering material) versus opacity (due to scattering of light), fluorescence or phosphorescence (light emission due to, e.g. UV light), glaze (due to reflection of light).

The virtually infinite spectrum comprising millions of naturally occurring tooth shades subjectively perceptible to the human eye can be reduced to a few standardised shades (clearly defined and described for objective documentation and communication) and only incur minimal aesthetic sacrifices. These are then incorporated into so-called shade guides (mostly one-dimensional/linear, rarely multi-dimensional, encompassing various parameters) such as for prefabricated denture tooth. These shade tabs are usually contoured like teeth, made of the restorative (e.g. composite or porcelain) and used for comparing with patients' teeth and/or restorations.

Vita classical A1-D4

 

  Shade guide

 

Shade guides are also available in gingival shades for imitating soft tissues such as mucosa.

As each specific surface appears differently (metamerism) when illuminated with light of differing intensities or wavelengths (sun, cloudy, dawn, artificial lighting), in order to achieve predictable results wherever possible shade-taking must be carried out under reproducible, standardised lighting conditions. To achieve these, various technical aids such as identical ring lights for dentist and technician, cameras with white balance or special electronic devices which measure spots or use standardised photos for "surveying" the various areas of the tooth (such as the incisal, dentine, cervical and proximal regions) and displaying the results to correspond with standard shade guides are employed.

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About us

The managing director and editor of this Online-Dental-Dictionary/Compendium, Richard Giles, is a native speaker of English who lives in Germany. He has over 12 years practical experience as a dental technician and has been working as a specialist translator (German - English) for dentistry and dental technology for more than 25 years.

During his time as manager and translator with Reule-Giles Dental-Service he started compiling a German/English dictionary of dental medicine/technology for himself and other employees. 

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