upper second premolar with surprising deep split

Upper 5 (Maxillary Second Premolar) — A Tooth That Demands Respect Commonly single-rooted with a single canal, yet the maxillary second premolar holds one of the most clinically deceptive configurations in endodontics. A Vertucci Type IV or V anatomy — with two buccal canals and a separate palatal exit — is far more prevalent than many appreciate, and missing it is a preventable failure. When encountering this tooth, the following should be non-negotiable: 1. Meticulous pre-operative radiographic interpretation. A single periapical film is rarely sufficient. Eccentric angulation views are essential to unmask canal bifurcation and assess root morphology in a second plane. 2. CBCT is not optional in complex presentations. When conventional radiography raises any doubt regarding canal number, root…