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Primary Dentition
Question | Answer |
---|---|
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 |