Two stain and glaze systems work very well in my clinical theater, Ivocolor by Ivoclar Vivadent and MiYo by Jensen.  Ivocolor is the most efficient and straightforward system, whereas MiYo colors have more depth perception and work well on zirconia and LT e.max ceramics.  However, MiYo takes more time and is not an efficient appointment support system.  This video will document the steps and colors used for an anterior e.max bridge stain and glaze technique.  

e.max stain and glaze