Resources Contact Us Home
Method for accurately preparing the color of a dental restoration

Image Number 3 for United States Patent #6030209.

The present invention relates to a method for preparing the color of a dental restoration using a spectrophotometer and a unique color system for porcelain dental restorations which enables a dentist or technician to manipulate the various color components of the porcelain, hue, chroma, value, and translucency, independently. Color component deltas between consecutive colors in the powder sets are equidistant, with the difference in values being linear in color space. This enables simplified, exact matching of a specified color component value. The method comprises illuminating an abutting tooth with light, gathering reflected light, converting the gathered light to analog signals, correct for ambient light interference, translucency effects (if necessary) and varying illumination, using the result to obtain accurate color component values, and employing those values to chose and, where necessary, mix the appropriate powers to obtain the correct color porcelain for the desired dental restoration.

  Recently Added Patents
Microfluidic cartridge and method of using same
Rotation angle detecting device
Management of memory array with magnetic random access memory (MRAM)
Lighting fixture
Placental tissue grafts
Interlock apparatus for vacuum circuit breaker
Event-triggered server-side macros
  Randomly Featured Patents
Modular drawers
Filter for purification of platelets
LCD driver power saving during evaluation
Oil-cooled type screw compressor
Boron-containing compositions, and lubricants and fuels containing same
Hygiene toilet seat handle
Memory device
Thermophilic fungal expression system
Overvoltage protection device including wafer of varistor material
Display stand and method of forming same