Primary Dentition - AAPD

1 THE REFERENCE MANUAL OF PEDIATRIC DENTISTRY 571 THE RTFHEN GROWTH AND development Primary Dentition Calcification FormationEruptionExfoliationbegins atcomplete atMaxillaryMandibularMaxillaryMandibular Central incisors 4th fetal mo18-24 mo6-10 mo5-8 mo7-8 y6-7 yLateral incisors 4th fetal mo18-24 mo8-12 mo7-10 mo8-9 y7-8 yCanines 4th fetal mo30-39 mo16-20 mo16-20 mo11-12 y9-11 yFirst molars 4th fetal mo24-30 mo11-18 mo11-18 mo9-11 y10-12 ySecond molars 4th fetal mo36 mo20-30 mo20-30 mo9-12 y11-13 yPermanent DentitionCalcificationCrown (enamel)RootsEruption*begins atcomplete atcomplete atMaxillaryMandibularCentral incisiors3-4 mo4-5 y9-10 y7-8 y (3)6-7 y (2)Lateral incisorsMaxilla: 10-12 mo4-5 y11 y8-9 y (5)7-8 y (4)Mandible: 3-4 mo4-5 y10 yCanines4-5 mo6-7 y12-15 y11-12 y (11)9-11 y (6)First premolars18-24 mo5-6 y12-13 y10-11 y (7)10-12 y (8)Second premolars24-30 mo6-7 y12-14 y10-12 y (9)11-13 y (10)First molarsBirth30-36 mo9-10 y (1) y (1a)Second molars30-36 mo7-8 y14-16 y12-14 y (12)12-14 y (12a)Third molarsMaxilla: 7-9 y17-30 y (13)17-30 y (13a)Mandible: 8-10 y* Figures in parentheses indicate order of eruption.

2 Many otherwise normal infants do not conform strictly to the stated 1933 American Dental Association. All rights reserved. Adapted 2003 by permission. Logan WHG, Kronfeld R. development of the human jaws and surrounding structures from birth to the age of fifteen years. J Am Dent Assoc 1933;20(3):379-427. Dental Growth and development