The Saliva Trap :Uncovering The Submandibular Gland Hidden Flaw

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Why SIALOLITHIASIS  seen in submandibular gland more commonly?

  • Submandibular excretory gland duct is wider in diameter ,longer than Stenson duct 
  • Salivary flow in submandibular gland is against gravity 
  • Submandibular gland salivary secretion is more alkaline compared with pH of parotid gland 
  • Submandibular gland saliva contain increased quantity of mucin protein where as parotid saliva is entirely serous 
  • Calcium ,phosphate content in submandibular gland saliva is greater than in other gland 

KEY POINTS:
  1. LONGER AND MORE TORTOUS DUCT :
  2. SALIVA COMPOSITION: thicker more alkaline saliva favors precipitation of calcium salts -the building block of stones 
  3. SALIVA FLOW DIRECTION (AGAINST THE GRAVITY):
  4. SLOWER FLOW RATE AT REST :submandibular gland are more active at rest (basal secretion) and the lower flow rate increases the risk of stagnation and crystal formation






To learn more about sialolithiasis click on this link below :

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