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the pathologic loss of hard tooth substance caused by biomechanical lodaing forces. The loss is thought to be due to flexure and chemical fatigue degradation of enamel and/or dentin at a location distant from actual point of loading
abraction
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a cosmetic dental procedure that uses a bleaching solution to whiten teeth
bleaching
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a phenomenon of light or visual perception that enables the differentiation of otherwise identical objects. Usually determined visually by measurement of hyi, saturation, and luminous reflectance of light
color
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pertaining to the study of beauty and the sense of beautiful; objectifies beauty and attractiveness, elicits pleasure
esthetic
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external, extraneous, as originating from or on the outside
extrinisic
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resutling from the activity of a clinician; disorders induced in a patient by the clinician
iatrogenic
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from within, incorporation of a colorant within a material
intrinsic
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a proven method for treating tooth discolorations by microreduction of superficial enamel through various methods of mechanical and/or chemical actions
microabrasion
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a compound that absorbs ultraviolet radiation, and is used to treat skin problems such as psoriasis, ecziema, or alopecia
psoralen
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when the combined effect of the interaction of elements produces a greater total effect than the sum of the individual elements
synergism
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having the appearance between complete opacity and complete transparency; parially opaque
translucency
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