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),
Naming February - Februum. February is the second month of the year in the Gregorian calendar and its predecessor, the Julian Calendar, and is the only month that has less than 30 days. It was named after the Latin word februum, which means purification because the month was a time for purification. 1  Middle English - Februarius. 2  Latin name - Februarius mensis - Month of Februa. 3  Latin - dies februatus - Day of Purification. 4  Old English - Solmonath - mud month.