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Alternatively, mandibular molar delay was not accompanied by corresponding maxillary molar delay, and the mandibular molars emerged later than the maxillary molars. This was strongly associated with Angle Class II malocclusion, indicating a relationship between relative time of emergence and relative position of opposing molars. Delay of the mandibular molar relative to the successional teeth or maxillary molars was associated with increased frequency of four cusped first and second molars and agenesis of third molars, indicating a tendency for co\u2010occurrence of delay in timing of molar emergence with reduction in structure of the molars. These relationships were evident even though emergences were affected by early loss of a deciduous second molar which increased M1I1 and M2P2 sequences by earlier emergence of M1 and delayed emergence of P2.<\/jats:p>","DOI":"10.1002\/ajpa.1330540310","type":"journal-article","created":{"date-parts":[[2005,8,9]],"date-time":"2005-08-09T05:47:20Z","timestamp":1123566440000},"page":"369-376","source":"Crossref","is-referenced-by-count":18,"title":["Association of relatively delayed emergence of mandibular molars with molar reduction and molar position"],"prefix":"10.1002","volume":"54","author":[{"given":"Donald L.","family":"Anderson","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Frank","family":"Popovich","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2005,6,3]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajpa.1330470306"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/00220345730520030701"},{"key":"e_1_2_1_4_1","first-page":"191","article-title":"Molar polymorphisms and the timing of dentition mineralization","volume":"41","author":"Anderson DL","year":"1977","journal-title":"Growth"},{"key":"e_1_2_1_5_1","first-page":"205","article-title":"Molar polymorphisms and body growth","volume":"42","author":"Anderson DL","year":"1978","journal-title":"Growth"},{"key":"e_1_2_1_6_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1111\/j.1469-7998.1939.tb00021.x","article-title":"Studies on mammalian dentition. 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