E-max (or Empress) crowns are a type of all-ceramic dental crown made from a high-strength lithium disilicate ceramic material. They are designed to provide a natural-looking and strong restoration for damaged or decayed teeth.

Compared to traditional porcelain crowns, E-max crowns are known for their exceptional strength and durability, allowing them to withstand the forces of biting and chewing. They are also highly aesthetic, with a translucent quality that allows them to blend seamlessly with the surrounding teeth.

E-max crowns are typically used for front and back teeth, and are especially useful in cases where a patient has a thin tooth structure or a history of fractured teeth. They are also often used for cosmetic purposes, as they can be designed to match the color, shape, and size of the surrounding teeth for a natural-looking result.

The process of getting an E-max crown typically involves several steps, including preparing the tooth, taking impressions, and designing and placing the crown. With proper care, E-max crowns can last for many years and provide a strong and attractive restoration for damaged or decayed teeth.