All of the following statement regarding stones in the submandibular gland are true except:

SIALOLITHIASIS (Salivary gland stone)- 80% of salivary gland stones are seen in Submandibular gland- 80% of salivary gland stones are - Radio-opaque- Composition* Calcium (or)* Magnesium phosphate (or)* Carbonate - Distributions of salivary gland stones* Submandibular gland (80%) > Parotid (10%) > Sublingual (7%) > Minor salivarygland (3%) Clinical Features - Pain & swelling in S/M region (during meals)- Referred pain to tongue - irritation of lingual nerve due to impacted stone Diagnosis- IOC for dx - NCCT Treatment- Stone in the duct - incision over the duct & removal of stone- Stone in the gland - excision of submandibular gland- Most common injured nerve during submandibular gland excision Sx - lingual nerve > Hypoglossal nerve