Hygiene Atlas

Atlas · Plate II · Dental Anatomy and Tooth Morphology · 03

Eruption of the permanent teeth

Permanent teeth arrive from about age 6, when the first molars and mandibular central incisors erupt, through the third molars at 17-21. Mandibular teeth usually lead their maxillary partners, and the maxillary canine (11-12 years) typically follows the premolars. Molars have no primary predecessor, while incisors, canines and premolars replace primary teeth.

High-yield facts · 12

  1. First permanent molars and mandibular central incisors erupt at 6-7 years.S6
  2. Maxillary central incisors 7-8 years; maxillary lateral incisors 8-9 years; mandibular lateral incisors 7-8 years.S6
  3. Mandibular canine 9-10 years; maxillary canine 11-12 years.S6
  4. Maxillary first premolar 10-11 years; maxillary second premolar 10-12 years.S6
  5. Mandibular first premolar 10-12 years; mandibular second premolar 11-12 years.S6
  6. Second molars: mandibular 11-13 years, maxillary 12-13 years.S6
  7. Third molars: 17-21 years.S6
  8. All 32 permanent teeth are usually in place by age 21.S6
  9. Mandibular teeth generally erupt before their maxillary counterparts.S42
  10. Maxillary permanent sequence is often 6-1-2-4-5-3-7; mandibular is often 6-1-2-3-4-5-7.S42T6
  11. Permanent molars are nonsuccedaneous (no primary predecessor); incisors, canines and premolars are succedaneous.T6
  12. Root completion lags eruption by roughly 2-3 years in permanent teeth.T6

Facts are written in our own words; each tag links to its source. Values marked "sources vary" differ between references, so check the one your program uses.