Front teeth, aesthetic crowns can be preferred over porcelain fused to metal crowns. Aesthetic crowns - 3M, Zirconia, Emax.. etc In aesthetic crowns u can get the almost natural shade of your teeth, translucency, no opacity, the marginal fit for the crown is good with the gums so it gives you a better look. Some aesthetic crowns come with warranty cards. Cost depends on the crowns you choose.

Emax, lava or zirconia are all completely tooth colored ceramic crowns. For front teeth all ceramic crowns are definitely better. Emax most preferred for the translucency and esthetic effects like natural teeth it provides. Lava or any other zirconia might appear more opaque or whitish.

Hello You can go for 3M premium lava the best one for aesthetics and durability and Alamo it will cost you from 10 to 15 k

Zirconia if u r not concerned about the cost

Different crowns can be fixed. If u looks for the cheapest it's Acrylic Crown and Costliest is Zirconium. Compared to Bangalore Chennai is much cheaper in Cost and same quality.