Permanent crown can be made of all metal, porcelain fused metal, all resin or all ceramic.
The metal used for the crown includes gold, palladium, nickel or chromium. Metal crowns rarely crack or break, last the longest in wear, and require only a small amount of teeth to be removed. They can also tolerate biting and chewing power. Metallic color is the main disadvantage. Metallic crowns are a good choice for poor eyesight molars.
Porcelain fused to a metal crown can match the color of the tooth next to them. They have a more natural tooth color. However, sometimes the metal under the crown's cap shows a black line. The other disadvantage is that the porcelain part of the crown may crack or fall off and the teeth in the oral cavity opposite the tooth will wear more. (The top and bottom teeth occluding when closing the mouth.) These crowns can be a good choice for the anterior or posterior teeth.
Full resin crowns are cheaper than other types of crowns. However, over time they wear out and rupture more easily than metal porcelain crowns.
All-ceramic or all-ceramic crown offers the best natural color than any other crown type. They are also a good choice for those with allergies to the metal. However, they are inferior to ceramic porcelain crowns. They may also wear away the teeth opposite them, a little more than metal or resin crowns. All-ceramic crown is a good choice for incisors.
The pressed ceramic crown has a hard core. They replaced the metal lining used in the manufacture of all-ceramic crowns. The pressed ceramic crown is covered with porcelain to provide the best natural color match. They also last longer than all-ceramic crowns.
