Hi, zirconia crowns would be suggested preferably if all these 6 teeth in concern are root canal treated. Although there are several zirconia crowns available with and without warranties being the front teeth in the most aesthetic area it’s better to go for the best proprietary systems available. The best ones would cost you in a range of 10.5k to 15k per tooth.
Next Steps
Visit us at any of our centres so we could give you a better idea of options available.
Health Tips
Come to a decision sooner as if your teeth are root canal treated then leaving them without crowns is not advisable as the risk of fracture becomes high.