Rivera is a surname of Spanish and Italian origin which was the old spelling of ribera, the Spanish word of âriverbankâ. The name Rivera is a Northern Italian variation of the Southern (Sicily) Ribera name. Other forms of spellings:Riva, Rivero, Riviere, Riba, just to name a few. Rivera is also a French surname.
The first baby teeth to fall out are typically the two bottom front teeth (lower central incisors) and the two top front teeth (upper central incisors), followed by the lateral incisors, molars and canines. Molars typically fall out between ages 9 and 12 and are replaced by permanent teeth by about age 13.
Youâll probably see the two bottom middle teeth pop up first, followed by the two top middle teeth. The bottom and top two side teeth should fill in over the next 3 or 4 months. Donât be alarmed if your baby is 7 months old and doesnât have any teeth yet. Teething patterns vary widely from child to child.A few babies are born with teeth, while other babies donât start teething until they are over a year old.he bottom and top two side teeth should fill in over the next 3 or 4 months. Donât be alarmed if your baby is 7 months old and doesnât have any teeth yet. Teething patterns vary widely from child to child.