The commonest teeth involved in transposition are: PGCEE MDS Entrance 2025

 # The commonest teeth involved in transposition are:

a) Maxillary central incisor and lateral incisor

b) Maxillary canine and first premolar

c) Maxillary 1st premolar and 2nd premolar

d) Maxillary canine and Lateral incisor

The correct answer is:

b) Maxillary canine and first premolar

Explanation:

Tooth transposition is a rare developmental anomaly where two adjacent teeth exchange their positions within the dental arch. The most commonly involved teeth in transposition are the maxillary canine and first premolar. This occurs due to disturbances in tooth eruption patterns, genetics, or space constraints in the dental arch.

Other less common transpositions include:

• Maxillary canine and lateral incisor (less frequent but still observed)
• Mandibular canine and lateral incisor (rare)