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.
Although baby teeth - also known as primary teeth - can arrive in any order, many children follow a loose pattern. The process often starts with the middle bottom teeth, with the top two middle teeth the next to arrive. Next are the teeth beside those middle chompers, and then the teeth beside them, continuing on until the jaw is full of a set of 20 little pearly whites.