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Primary Dentition

QuestionAnswer
Calcification begins: Central Incisors The central incisors (Mx and Md) begin calcification 3-4 months in utero
Calcification begins: Lateral Incisors The lateral incisors (Mx and Md) begin calcification 4 months in utero (same as the First Molars)
Calcification begins: First Molars The first molars (Mx and Md) begin calcification 4 months in utero (same as the Lateral incisors)
Calcification begins: Canines The canines (Mx and Md) begin calcification 4-5 months in utero
Calcification begins: Second Molars The second molars (mx and md) begin calcification 5 months in utero
Calcification sequence: order the teeth in the order they calcify in utero Central incisors (3-4 mos in utero) Lateral Incisors and 1st molars (4 mos in utero) Canines (4-5 mos in utero) 2nd molars (5 months in utero)
Crown completion post-natal: Mx Central Incisors The maxillary central incisors complete crown formation at 2 months
Crown completion post-natal: Mx Lateral Incisors The maxillary lateral incisors complete crown formation at 2-3 months (same as the mandibular centrals incisors)
Crown completion post-natal: Md central incisors The mandibular central incisors complete crown formation at 2-3 months (same as the maxillary lateral incisors)
Crown completion post-natal: first molars The first molars (both mx and md) complete crown formation at 6 months
Crown completion post-natal: canines The canines complete crown formation at 9 months (caNINE: crown 9 months)
Crown completion post-natal: Md 2nd molars The mandibular 2nd molars complete crown formation at 10 months
Crown completion post-natal: Mx 2nd molars The maxillary 2nd molars complete crown formation at 11 months
Crown completion post-natal: order the teeth in the order they complete crown calcification MxCI (2) MxLI,MdCI (2-3) MdLI (3) 1M (6) C (9) Md2M (10) Mx2M (11)
Eruption: mandibular central incisors The mandibular central incisors erupt at 6-8 months
Eruption: maxillary central incisors The maxillary central incisors erupt at 7-10 months
Eruption: maxillary lateral incisors The maxillary lateral incisors erupt at 8-11 months
Eruption: mandibular lateral incisors The mandibular lateral incisors erupt 9-13 months
Eruption: maxillary first molars The maxillary first molars erupt at 12-15 months (Mx2M: +1 to 15 --> eruption for Mx2M: 12-16)
Eruption: mandibular first molars The mandibular first molars erupt at 12-16 months
Eruption: maxillary canine The maxillary canine erupts at 16-19 months (MdC +1, +1: MdC erupts 17-20 mos)
Eruption: mandibular canine The mandibular canine erupts at 17-20 months
Eruption: mandibular 2nd molar The mandibular second molar erupts at 20-26 months
Eruption: maxillary 2nd molar The maxillary second molar erupts at 25-28 months
Eruption: order the teeth in the order they erupt MdCI (6-8) MxCI (7-10) MxLI (8-11) MdLI (9-13) Mx1M (12-15) Md1M (12-16) MxC (16-19) MdC (17-20) Md2M (20-26) Mx2M (25-28)
Root completion: Incisors (C and L) The root of the incisors are complete by 2.5 years old
Root completion: First molars The root of the first molars are complete by 3 years old
Root completion: Canines The root of the canines are complete by 3.5 years old (same as the mandibular 2nd molar)
Root completion: Mandibular 2nd Molar The root of the mandibular 2nd molars are complete by 3.5 years old (same as the canines)
Root completion: Maxillary 2nd molar The root of the maxillary 2nd molars are complete by 4 years old
Root completion: order the teeth in order their roots are completely formed Incisors (2.5) 1M (3) Md2M, C (3.5) Mx2M (4)
Emergence Sequence: Mandibular Central Incisors The mandibular central incisors are 1st to erupt
Emergence Sequence: Maxillary Central Incisors The maxillary central incisors are 2nd to erupt
Emergence Sequence: Maxillary Lateral Incisors The maxillary lateral incisors are 3rd to erupt
Emergence Sequence: mandibular lateral incisors The mandibular lateral incisors are 4th to erupt
Emergence Sequence: maxillary 1st Molar The maxillary first molars are 5th to erupt
Emergence Sequence: mandibular 1st molar The mandibular first molars are 6th to erupt
Emergence Sequence: maxillary canines The maxillary canines are 7th to erupt
Emergence Sequence: mandibular canines The mandibular canines are 8th to erupt
Emergence Sequence: Mandibular 2nd molars The mandibular second molars are 9th to erupt
Emergence Sequence: maxillary 2nd molars The maxillary second molars are 10th to erupt
Emergence Sequence: order the teeth in the order the erupt MdCI MxCI MxLI MdLI Mx1M Md1M MxC MdC Md2M Mx2M
Created by: reamckin
 

 



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