Dilation creates an entry path for the fine cannula while helping the operator access the duct through its natural opening beside the lingual frenulum. This step supports subsequent irrigation, contrast injection, stone retrieval, or sialendoscope passage. Careful access is particularly relevant when investigating obstructed salivary flow without immediately resorting to open surgery.
Direct or endoscopic guidance helps the operator locate the ductal papilla and control advancement of the cannula within the duct. Endoscopic access can also support evaluation of strictures and other causes of obstruction. The resulting visualization and duct access connect the cannulation step with both diagnostic assessment and minimally invasive treatment of salivary duct disease.
Access may help evaluate strictures, stones, and other causes of obstructed salivary flow. These findings are relevant to obstructive sialadenitis, in which impaired drainage affects the submandibular gland. By creating a route for inspection, contrast injection, or therapeutic maneuvers, the technique links the physical duct abnormality with the clinical problem being investigated.
The procedure begins by locating the ductal papilla beside the lingual frenulum. The opening is then gently dilated, followed by advancement of a fine cannula into Wharton duct under direct or endoscopic guidance. Once access is established, the channel can support irrigation, contrast injection, stone retrieval, or passage of a sialendoscope, depending on the clinical purpose.
The cannula can provide a route for irrigation or contrast injection and may support stone retrieval. It can also permit passage of a sialendoscope, an instrument used to evaluate the duct. These options allow the same access route to serve diagnostic and therapeutic goals, including assessment of strictures and other causes of impaired salivary drainage.
Wharton Duct Cannulation is useful when clinicians need minimally invasive access to investigate or treat obstructive sialadenitis and related salivary duct obstruction. By supporting endoscopic evaluation, irrigation, contrast studies, or stone retrieval, it may help preserve submandibular gland function while reducing the need for open surgery. Its value therefore extends beyond access alone to gland-preserving management.