1.It has perfect realistic colors，because first cercon crown is made into base crownthrough computer aided design, laser scanning, and controlled by a computer program and than use the decorative porcelain.It is very popular.
2.It has high density and strength，and the colour of base crown is white,so the neck does not stimulate the gumsdark and blue.But PFM can not.
3.X-ray can pass through it.It does not need to remove when do skull X-ray,CT,MRI,and can save a lot of trouble.
4.It have excellent biocompatibility in mouth.Superior to all kinds of metal alloys,including gold.No irritation, no allergy reaction to gums.To avoid the metal in the oral cavity to produce allergy, irritant, corrosion and other adverse reactions.