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SHADE MATCHING FOR Aesthetic SUCCESS

SHADE MATCHING FOR Aesthetic SUCCESS. Stefan Ursu C.D.T. Instructor, New York University College of dentistry Dental Aesthetic Studio February 24th, 2010. Shade Matching. History of Color in Dentistry Theory of color Variables affecting color

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SHADE MATCHING FOR Aesthetic SUCCESS

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  1. SHADE MATCHING FOR Aesthetic SUCCESS • Stefan Ursu C.D.T. • Instructor, New York University College of dentistry • Dental Aesthetic Studio • February 24th, 2010

  2. Shade Matching • History of Color in Dentistry • Theory of color • Variables affecting color • Conventional and technology-based shade matching • Shade Matching Procedure • Clinical Cases • Clinical Cases

  3. History of color in dentistry • 1930’s - Dr. Bruce Clark • 1960’s & 70’s - Dr. R. Sproull, Dr. J. Preston, Dr. S. Bergen. (SCAD) • 1970’s-1980’s Dr. John McLean, Mr. Willi Geller • 1990’s - Present Dr. Stephen Chu, Dr. Galip Gurel, Dr. Pascal Magne, Mr. Michel Magne

  4. Theory of Color

  5. Sir Issac Newton

  6. -THE INTERACTION OF LIGHT WITH AN • OBJECT MAKES COLOR PERCEPTION • POSSIBLE -

  7. The Physics of Light

  8. The Physics of Light • Emission - The source of light. Produced by physical or chemical processes.

  9. The Physics of Light • Transmission - Process by which light passes through a translucent or transparent object.

  10. The Physics of Light • Reflection - occurs when light strikes a solid object and bounces off of it.

  11. The Physics of Light Absorption - Process by which light is absorbed by the object.

  12. The Physics of Light Perception - Occurs in the brain. Rods perceive brightness and and cones perceive the hue (color).

  13. The Physics of Light

  14. The Physics of Light The perceived color of an object is the determined by the molecular density and makeup of that object

  15. Color in Dentistry

  16. Primary and Secondary Colors

  17. Complementary Colors

  18. Complementary colors neutralize each other and form grey

  19. Prof. Albert D. Munsell

  20. Munsell’s Color Chart

  21. Munsell’s Color Chart Hue - Color tone, the actual color Chroma - Saturation, purity of color Value - Relative lightness/darkness of the color Translucency - The degree to which light is transmitted rather than absorbed or reflected in a given restoration

  22. Variables Affecting Color(perception)

  23. ILLUMINATION

  24. Light Intensity...

  25. Light Quality... Incandescent - 2856 K Fluorescent - 4000 K Color Corrected - 5500 K

  26. FACTORS AFFECTING ILLUMINATION • Metamerism • Lighting Conflicts

  27. Metamerism - Phenomenon in which the same object will look differently under different lighting conditions.

  28. Lighting Conflicts - mixing of light sources

  29. CONTRAST EFFECTS

  30. Value Contrast

  31. Value Contrast

  32. Hue Contrast

  33. Hue Contrast

  34. Chroma Contrast

  35. Chroma Contrast

  36. Areal Contrast

  37. Areal Contrast

  38. Spacial Contrast

  39. Spacial Contrast

  40. Successive Contrast

  41. Successive Contrast

  42. VIEWER ASSOCIATED EFFECTS

  43. VIEWER-ASSOCIATED EFFECTS • Color Blindness • Age • Fatigue • Nutrition • Emotions • Binocular differences • Medication

  44. Effects of Chemicals on Color Perception

  45. Shade MatchingArmamentarium

  46. Conventional Technology-Based

  47. Vita Classical and 3-D Master Shade Guides

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