There are various type of types for Crowns depending on their esthetic value and strength
All Ceramic (Metal Free) Crowns
If you do not want to have any metal inside your mouth, All Ceramic Crowns are the best solution. They are high in durability, strength and have the best esthetics. They blend more naturally with your teeth and surrounding tooth structures almost making it unnoticed.
PFM (Porcelein Fused to Metal ) crowns
If you have aesthetic concerns and also wish to have metal crowns inserted then these are the best option available. The inside of the teeth is made up of metal and the outer portion of the crown is made of porcelain, as a result, it has the dual advantage – metal which provides strength and porcelain which matches with the color of the teeth making it look like natural teeth. They look the most like natural teeth.
Metal Crowns
They are the traditional type of crown often used which can withstand hard chewing forces and biting. Being stronger they last longer and do not wear down easily. The only drawback is that they are visible from a distance hence they are considered as less attractive