Dental Formula - Dog

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The Dog

Dental Formula

2 (I3/3 C1/1 P3/3) Deciduous

2 (I3/3 C1/1 P4/4 M2/3) Permanent

  • Toothless at birth
  • Deciduous teeth complete and functional within 2 months of birth
  • Permanent teeth complete and funtional by the end of the 6th or 7th month

Canines

  • Large, curved, laterally compressed
Dog Dentition - Copyright Nottingham 2008

Molars

  • Broader than premolars
  • Number of cusps similar in all breeds- usually two or three

Incisors

  • Tricupsid in upper jaw
  • Bicusped in lower jaw
  • Smaller rostrally

Premolars

  • Irregular, closely-spaced
  • More complex and larger caudally
  • Discontinuous cutting edge on crowns

Breed Differences

  • Eruption times differ between breeds so difficult to age dogs by teeth
  • Brachiocephalic dogs do not possess all cheek teeth, have fused roots and have carnasial teeth (upper P4 and lower M1)