Viewer Related Color Effects
Posted on 08/02/2012
In addition to the color contrast effects noted in our previous blogs, there are a number of viewer associated effects that can impact the perception of color.
The following list, while not exhaustive, covers the more common viewer related effects that can influence shade selection:
Color Blindness – the inability to distinguish red, green and blue colors can cause for improper shade selection.
Age – professionals over the age of sixty will often face difficulties in perceiving blue and purple colors.
Fatigue – tired eyes from consecutive shade selections will often compromise proper shade selection.
Nutrition – macular degeneration can severely impact the professional’s ability to distinguish colors and shades.
Emotion – emotion has been shown to affect papillary diameter and thus cause changes in perception of colors. Anger or sadness, for example, can impact the professional’s ability to choose the correct shade.
Medication – certain medications can cause vision distortions. Studies have shown that Viagra can give a blue tint to objects, and this medication as well as any other medication with visual side effects should be avoided prior to shade selection.
Binocular Difference – perception differences between the right eye and the left eye can lead to incorrect shade selection. Holding the shade tab above or below the tooth, rather than to the side of the tooth, often helps to account for this perception difference.
Portions of this post were adapted from the book:
Fundaments of Color - Shade Matching and Communication in Esthetic Dentistry published by Quintessence Publishing Co. Inc pages 33-35, and written by Dr. Stephen J. Chu, Dr. Alessandro Devigus, Dr. Rade D. Paravina and Mr. Adam J. Mieleszko.
The following list, while not exhaustive, covers the more common viewer related effects that can influence shade selection:
Color Blindness – the inability to distinguish red, green and blue colors can cause for improper shade selection.
Age – professionals over the age of sixty will often face difficulties in perceiving blue and purple colors.
Fatigue – tired eyes from consecutive shade selections will often compromise proper shade selection.
Nutrition – macular degeneration can severely impact the professional’s ability to distinguish colors and shades.
Emotion – emotion has been shown to affect papillary diameter and thus cause changes in perception of colors. Anger or sadness, for example, can impact the professional’s ability to choose the correct shade.
Medication – certain medications can cause vision distortions. Studies have shown that Viagra can give a blue tint to objects, and this medication as well as any other medication with visual side effects should be avoided prior to shade selection.
Binocular Difference – perception differences between the right eye and the left eye can lead to incorrect shade selection. Holding the shade tab above or below the tooth, rather than to the side of the tooth, often helps to account for this perception difference.
Portions of this post were adapted from the book:
Fundaments of Color - Shade Matching and Communication in Esthetic Dentistry published by Quintessence Publishing Co. Inc pages 33-35, and written by Dr. Stephen J. Chu, Dr. Alessandro Devigus, Dr. Rade D. Paravina and Mr. Adam J. Mieleszko.
