McGurk et al listed criteria for deciding whether a minimally invasive method can be used to remove a salivary stone. The authors are from the Guy’s, King’s and St. Thomas’s Dental Institute in London.
Finding
Exclusion
Method of Choice
stone not readily identified on ultrasonography
ESWL (extracorporeal shock-wave lithotripsy)
blood dyscrasia
ESWL
coagulopathy
ESWL
pregnancy
ESWL
history of stapedectomy or ossicular repair
ESWL
known fixed stone
basket retrieval
ESWL in parotid, intra-oral surgery if submandular
located within a diverticulum
basket retrieval
diameter > 50% wider than the distal duct
basket retrieval
stone not palpable intra-orally
intra-oral surgery
If ESWL was attempted and if the stone persisted after 15,000 shock wave applications then an alternative method was chosen.
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