This machine is the only machine in the world that can replace the missing tooth structure with a material that is as close to enamel as possible, and it can be done in only one visit. The ceramic block used to fabricate your porcelain crown is the only material in the world identical to enamels thermal coefficient so there is no expansion to heat or cold. It also has the same refractive properties as enamel, the translucency is the same as enamel and the particle size, 4 microns, is identical to enamel. And finally, it will not wear the opposing teeth! Welcome to the world of CEREC. We are proud to be the only office in West Los Angeles to provide this phenomenal process to you! Dr. Jay S. Grossman