Dear ma'am.
For front tooth, aesthetic is the main concern followed by strength and durability. You can opt for emax crown. They are the best.
Prices of the caps varies from clinic to clinic depending on the experience of doctor, clinic location etc.
Regarding, branded or generic is concern , your doctor can guide you better. Branded labs offer guarantee and claim to be using the best material.
But honestly I had a very bad experience with the leading brand of zirconia crowns. And my local technician provided me with better work and service. I now recommend generic crowns more than the brand for front crowns. Your doctor would know the labs better and will be able to recommend you accordingly.
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Feel free to contact me for any more queries or to have an idea about the pricing.