So I chipped my #13 pre molar the other day and the dentist said that a crown is necessary. HE gave me the regular options of Porcelain fused to metal or gold, plus a third option of an all Ceramic/Porcelain crown. I believe I had the latter on a molar that cracked on me 2 years after having it placed (another dentist) after eating a cookie.
My present Dentist says that one of the main advantages of all ceramic\porcelain is that it is bonded to the tooth as opposed to cemented like a PFM. It is also less likely to come loose from sticky foods like caramel. He also said that the data from the 10 year study is coming in for the all Porcelain crowns and that it is favorable.(I am not finding too much info on my own regarding this) The cost difference is $150 more for the all Porcelain over the PFM. I am not so concerned about the price as I am about functionality and longevity