Detection of stain formation on teeth by oral antiseptic solution using fiber optic displacement sensor

In the last few decades, dental clinicians face increasing demands and expectations for accurate color matching due to the increasing attention given by the media and patients to esthetic dentistry. Hence, precise color matching has become an even more critical success factor for esthetic restoration. The subjective color perception of an observer leads to variations and unpredictable differences in color evaluation and matching among clinicians. Among the elements that affect the perceived color are the spectral distribution of a color stimulus, the surroundings of the stimulus [1], the state of an observer’s visual system and on the observer’s experience [2]. Furthermore, different surroundings lead to metamerism which is a phenomenon whereby different colors are exhibited by the same tooth when viewed under different lighting conditions [3].