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Restorative & Materials · single question

A sialolith (salivary stone) is MOST commonly found in which salivary gland?

  1. Parotid gland (Stensen's duct)
  2. Submandibular gland (Wharton's duct) — 80–90% of all sialoliths
  3. Minor salivary glands
  4. Sublingual gland
Show answer and explanation

Correct answer: B. Submandibular gland (Wharton's duct) — 80–90% of all sialoliths

  • A. The parotid gland (Stensen's duct) accounts for ~5–20% of sialoliths. Parotid saliva is serous with lower calcium content.
  • B. Correct. Approximately 80–90% of all sialoliths occur in the SUBMANDIBULAR GLAND (Wharton's duct). This is because: (1) Wharton's duct is longer and tortuous, (2) saliva must travel 'uphill' against gravity, (3) submandibular saliva is more mucous (thicker, more calcium) compared to parotid (serous).
  • C. Minor salivary gland stones are uncommon.
  • D. Sublingual gland sialoliths are rare (<5%) — the gland drains through multiple small Rivinus ducts.

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