Dentition mammals the infants have a set of teeth that fall out and are replaced by adult teeth. These are called deciduous teeth, primary teeth, baby teeth or milk teeth. Animals that have two sets of teeth, one followed by the other, are said to be diphyodont. Normally the dental formula for milk teeth is the same as for adult teeth except that the molars are missing. Because mammal teeth are specialised for different functions, many mammal groups have lost teeth not needed in their adaptation. Tooth form has also undergone evolutionary modification as a result of natural selection for specialised
Should've Known Better (Richard Marx song) lyrics, the speaker is still in love with an ex-lover and tortured by it, to the point of regretting falling in love with them. The music video for the selection was directed by Dominic Sena. Released in September 1987 as the second single from his debut solo album, "Should've Known Better" entered the U.S. "Billboard" Hot 100 on September 26, 1987 at number 64, the highest debut of the week. The single also peaked at number 20 on the U.S. Adult Contemporary chart. The song also reached #4 on the Radio & Records CHR/Pop Airplay chart on November 20, 1987