Shade matching in is a challenging step and major objective in esthetic and restorative dentistry. On many occasions, production of the accurate, target color will not be achieved due to errors in registration of the target color, or errors in composing the appropriate color of the restoration in the dental laboratory. Thus, the accurate
and correct shade matching of tooth and restoration is is one of the most important quality criteria for the patient and the key to successful results for the dentist.
Conclusion: Spectrophotometers, colorimeters, intraoral scanners and imaging systems are useful and relevant tools for tooth color measurement and analysis, and for quality control of color reproduction. Combination of visual and instrumental methods of tooth color determination will complement each other and can lead towards predictable esthetic results .