Dear Doctor,
I kindly ask for your opinion on all-ceramic (zirconia) crowns compared with metal-ceramic crowns. Which are more suitable for first molars? Which are more durable and which are safer? What is the metal part made of? I would like to choose quality and durability. Please advise me. Sincere thanks.

Dear Sir/Madam!

All-ceramic crowns are made to meet high aesthetic standards. The crowns transmit light, which provides better conditions for imitating the appearance of natural hard dental tissues. Durability, fracture strength, safety, longevity... in other words quality, do not differ substantially between the two types of crowns. The metal part of metal-ceramic crowns is made of semi-precious or precious metals with a high redox potential (meaning they do not dissolve in saliva, which is an electrolyte), and they do not contain allergenic additives or ferromagnetic substances that could interfere with diagnostic procedures (magnetic resonance imaging...). The deciding factor is most often social; all-ceramic crowns are more expensive.
Based on what you have written, I think you will have to decide for yourself.

Have a nice day!