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Aetiology

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Factors that combine to produce calculi in the duct of the submandibular gland include:

  • the long, upward course of the submandibular duct
  • the narrow duct orifice
  • mucus acting as a matrix, possibly due to:
    • stagnation
    • retrograde infection from the mouth
  • a high concentration relative to parotid saliva of:
    • calcium hydroxy apatite
    • phosphate hydroxy apatite
    • phosphatases

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