Anatomy & Histology · single question
Which premolar is MOST likely to have two roots and two canals?
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Correct answer: B. Maxillary first premolar
- A. ❌ The maxillary second premolar usually has a single root, though a second canal occurs in about half of cases.
- B. ✅ CORRECT — The MAXILLARY FIRST PREMOLAR is the premolar most likely to be bifurcated, with separate buccal and palatal roots in roughly 60–80% of cases and two canals in about 85–95%.
- C. ❌ The mandibular first premolar is single-rooted; two canals occur in about a quarter of cases.
- D. ❌ The mandibular second premolar is the most consistently single-canal premolar.
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