The primary canines typically appear between 16 to 20 months.

• The mesiodistal length of the crowns is the same size as the incisocervical length.
• The distal cusp ridges of the maxillary canines (C, H) are shorter than the mesial cusp ridges.
• The cusps of the mandibular canines (R, M) can look pointed. 
• The distal cusp ridge of the mandibular canine is longer than the mesial cusp ridge.