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
Perfect Teeth days, but did not produce the album in any form. "Perfect Teeth" was released on August 9, 1993 as a box set of 7" vinyl records. It was later released on compact disc, 12" vinyl and cassette on August 24, 1993. In 2010, "Billboard" stated that the group's albums "never managed to sell big" and that "Perfect Teeth" was their best selling album which sold about 15,000 copies according to Nielsen SoundScan. Following the release of "Perfect Teeth", Unrest embarked on a tour where they opened for Stereolab. "Perfect Teeth" was re-issued by Teen Beat Records in 2012. The reissue