Primary teeth

• Sequence of eruption: A-B-D-C-E

Tooth	Arch	Calcification (Weeks in utero)	Crown completion (Months)	Eruption (Months)	Root completion (Years)
A CI	Max Mand	14	1.5 2.5	10 8	1.5
B LI	Max Mand	16	2.5 3	11 13	2 1.5
C C	Max Mand	17	9	19 20	3
D M1	Max Mand	15	6 5.5	16	2
E M2	Max Mand	19 18	11 10	29 27	3

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Permanent teeth

• Sequence of eruption:
  • Maxilla: 6-1-2-4-5-3-7-8
  • Mandible: 6-1-2-3-4-5-7-8

Tooth	Arch	Tooth germ appearance (IU)	Beginning of crown calcification	Crown calcification complete	Eruption	Root completion
6 M1	Max Mand	16	At birth	2.5-3 years	6-7 years	9-10 years
1 CI	Max Mand	16	3-4 months	3-4 years	7-8 years 6-7 years	10 years 9 years
2 LI	Max Mand	16	10-12 months 3-4 months	4-5 years	8-9 years 7-8 years	11 years 10 years
3 C	Max Mand	18	4-5 months	6-7 years	11-12 years 9-10 years	13-15 years 12-14 years
4 PM1	Max Mand	20	1.5-2 years	5-6 years	10-11 years	12-13 years
5 PM2	Max Mand	22-24	2-3 years	6-7 years	10-12 years 11-12 years	12-14 year
7 M2	Max Mand	1st year	2.5-3 years	7-8 years	12-15 years 11-13 years	14-16 years
8 M3	Max Mand	3rd year	7-9 years 8-10 years	12-16 years	17-24 years 17-21 years	18-25 years

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Common teeth notation systems:

• FDI World Dental Federation notation
• Universal Numbering System
• Palmer notation