Dental Growth and Development - Pediatric Dentistry

1 AMERICAN ACADEMY OF Pediatric DENTISTRYRESOURCE SECTION 377 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. Copyright 1933 American Dental Association. All rights reserved. Adapted 2003 by permission.* Figures in parentheses indicate order of eruption. Many otherwise normal infants do not conform strictly to the stated schedule. 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)

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 yDental Growth and Development