Which tooth is most frequently observed to deviate from its eruption path?

Which tooth is most frequently observed to deviate from its eruption path?

• A. Maxillary canine
• B. Mandibular central incisor
• C. Maxillary central incisor
• D. Mandibular canine

Answer: (A)

The largest factor here is the unique eruption path and guidance pattern for the maxillary canine. It travels a long, curved route from a high posterior position and relies on proper guidance from the erupting lateral incisor to align into the arch. If there isn’t enough space or the lateral incisor provides poor guidance (for example, if it’s peg-shaped or missing), the canine is prone to drift off course, most commonly into a palatal position, and can even become impacted. This combination of a lengthy eruption path and dependence on early guidance makes the maxillary canine the tooth most likely to deviate from its eruption path. In contrast, the other teeth listed have shorter, more straightforward eruption paths and are less frequently ectopic.

The largest factor here is the unique eruption path and guidance pattern for the maxillary canine. It travels a long, curved route from a high posterior position and relies on proper guidance from the erupting lateral incisor to align into the arch. If there isn’t enough space or the lateral incisor provides poor guidance (for example, if it’s peg-shaped or missing), the canine is prone to drift off course, most commonly into a palatal position, and can even become impacted. This combination of a lengthy eruption path and dependence on early guidance makes the maxillary canine the tooth most likely to deviate from its eruption path. In contrast, the other teeth listed have shorter, more straightforward eruption paths and are less frequently ectopic.