INBDE (Integrated National Board Dental Examination) Practice Exam

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What does the term 'metamerism' refer to?

A type of dental material
A condition of gum inflammation
A color difference under various illuminants
A pattern of tooth wear

The correct answer is: A color difference under various illuminants

Metamerism refers to a color difference under various illuminants. This phenomenon occurs when two objects match in color under one light source but look different under another light source. This is particularly important in dentistry when matching different dental restorations to natural teeth, as the color perception can vary in different lighting conditions. Options A, B, and D are incorrect: A. Dental material: Metamerism is not a type of dental material. B. Gum inflammation: Metamerism is not related to a condition of gum inflammation. D. Tooth wear pattern: Metamerism is not associated with a pattern of tooth wear.