There is a broad selection of ingot shades available for e.Max.
Cementation e.Max crowns is achieved by both bonded (adhesive) and mechanical retention.
Because cement is the weakest link, the tooth preparation itself should be well-designed and shaped allowing the best possible retention of the crown without cement. IPS eMax restorations have two different possibilities for cementation: adhesive bonding and conventional cement.
Adhesive methods take advantage of chemically bonding the lithium disilicate restoration to the tooth preparation in addition to mechanical retention, yielding a crown that is less likely to come off over time.
Convention cementation allows for mechanical retention only and would make it easier to retrieve the restoration should you believe it may be necessary in the future (i.e. the possible need of endodontic treatment).