Orthodontics · single question
Which tooth is LEAST likely to be ectopically located?
Show answer and explanation
Correct answer: A. Lateral incisor (maxillary)
Lateral incisor (A) is LEAST likely to be ectopically located. Wait — this needs careful interpretation. The most commonly ECTOPICALLY located teeth are:
1. Maxillary canine (most common ectopic tooth overall)
2. Third molars (most commonly impacted/ectopic due to space deficiency)
3. Premolars
4. Mandibular canine
• The lateral incisor is the least commonly ectopically located of typical teeth — although it frequently shows congenital absence, peg shape, or other anomalies.
• Among the options, lateral incisor is least prone to ectopic eruption/impaction under normal circumstances compared to canines and third molars.
• Lateral incisors frequently affect canine eruption paths though — their absence/small size allows canine impaction.
1. Maxillary canine (most common ectopic tooth overall)
2. Third molars (most commonly impacted/ectopic due to space deficiency)
3. Premolars
4. Mandibular canine
• The lateral incisor is the least commonly ectopically located of typical teeth — although it frequently shows congenital absence, peg shape, or other anomalies.
• Among the options, lateral incisor is least prone to ectopic eruption/impaction under normal circumstances compared to canines and third molars.
• Lateral incisors frequently affect canine eruption paths though — their absence/small size allows canine impaction.