Clinical shade matching best if carried out immediately after dental procedure: Study
Researchers have recently found out that short-term dental dehydration produces clinically unacceptable changes in tooth color, hence clinical shade matching must be done within the first two minutes of any clinical procedure, as published in the Journal of Dentistry.
Dental restorations should mimic sound tooth structures in terms of color and optical properties especially in the anterior region. However, closely matching natural teeth with a restoration can be one of the most challenging procedure in restorative dentistry. Shade matching includes color determination, color communication with dental lab and color reproduction with dental restoration for indirect techniques or color determination and selection of the appropriate material and application method when using direct techniques. Therefore, color selection is the first critical step in the restoration procedures and should be carried out properly.
Hence, Javier Ruiz-López and colleagues from the Department of Optics, Faculty of Science, University of Granada, Granada, Spain conducted the study to determine in-vivo chromatic and whiteness changes produced by short-term dental dehydration.
The authors measured the spectral reflectance of 452 upper incisors (226 centrals and 226 laterals) of 113 participants using a spectroradiometer at baseline and after short-term dehydration (minutes 2, 4, 6, 8 and 10). CIE L*a*b* color coordinates (L*, a*, b*, C*ab and hab) and whiteness index for dentistry (WID) were calculated.
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