Deciduous teeth first teeth seen in the mouth are the mandibular centrals and the last are the maxillary second molars. The primary teeth are made up of central incisors, lateral incisors, canines, first molars, and secondary molars; there is one in each quadrant, making a total of four of each tooth. All of these are gradually replaced with a permanent counterpart except for the primary first and second molars; they are replaced by premolars. The replacement of primary teeth begins around age six, when the permanent teeth start to appear in the mouth, resulting in mixed dentition. The erupting permanent teeth cause
I Should Have Known Better (Jim Diamond song) I Should Have Known Better (Jim Diamond song) "I Should Have Known Better" was a UK number one single for one week in December 1984 for Jim Diamond. The song was displaced after one week by Frankie Goes to Hollywood's song "The Power of Love". Diamond publicly requested that people not buy his single, but instead buy "Do They Know It's Christmas?" "I Should Have Known Better" was re-recorded for Diamond's 1993 solo album "Jim Diamond". He recorded the song a third time for his 2005 single "Blue Shoes", which also featured a re-recording of "I Won't Let You Down"