The Procera crown â Procera is a milled ceramic on the inside with a more traditional porcelain baked onto the outside. The advantage of Procera is its exceptional strength. However, the milled ceramic core is opaque white, so many cosmetic dentists feel that it isnât as natural-looking as the more translucent materials.
Origin of the Names of the Months. 1  January: Janus, Roman god of doors, beginnings, sunset and sunrise, had one face looking forward and one backward,  February: On February 15 the Romans celebrated the festival of forgiveness for sins; (februare, Latin to purify),
922,907 questions onWikianswers. The name of March, the third month of the year, comes from ancient Rome, when March was the first month of the year and named Martius after Mars, the Roman god of war.22,907 questions onWikianswers. The name of March, the third month of the year, comes from ancient Rome, when March was the first month of the year and named Martius after Mars, the Roman god of war.