Excellent aesthetics, extreme durability and strength, best match to your natural teeth. These are the reasons why the Emax system is getting more and more popular nowadays.
It's possible to restore a missing teeth in a day with a dental implant (, instead of the usual 6+ months healing period), however you need to be aware of the risk of this procedure as well.
Because of their aesthetic appeal, all ceramic crowns are preferred for front tooth restorations. They are more expensive then traditional crowns but their advantages compensate for the higher price.
Gold is an ideal material for dental crowns. Due to its unaesthetic appeal, it's not a popular choice.