See also:

• Salivary Cannulation and Infusion Techniques (3 minute video)
• Submandibular duct cannulation
• Turner Needle used for Wharton's Duct (Submandibular Duct) Cannulation
• Checklist Steroid Insufflation to Salivary Glands in Clinic
• Cook Medical Salivary Access Dilator Set
• Salivary Gland Terminology (Anatomy, Salivation, Dry Mouth, Drooling)
• Submandibular Sialogram with Stricture Showing Dynamic Changes to Duct Morphology During Infusion and Catheter Removal
• Sialograms and Sialography
• Instructions to patients submandibular salivary stones

Videos

Additional Considerations

As per Barsky and Silberman (1932)

• "Movements of the cheek affect the duct, straightening its course or making it more irregular"
• "A colored solution of some kind, such as 3.5 per cent iodine, is applied to the papilla, and the opening of the duct is disclosed"

Historical Perspective - perhaps identifying why some still consider the process of sialography to be 'invasive' (we do not consider it 'invasive'):

• Use of cut-down for submandibular duct with identification of lingual nerve and mobilization of the duct for cannulation (Friedlander 1976)
• Use of a series of horse-hairs to place (~4) to dilate the duct (mention also made of 4-0 nylon) 

References

Barsky AJ, Silberman H. Röntgen Visualization of the Parotid Gland by Means of Lipiodol Injection. Ann Surg. 1932 Jan;95(1):46-51. doi: 10.1097/00000658-193201000-00004. PMID: 17866716; PMCID: PMC1391546.

Friedlander AH: Cut-down sialography fo the submandibular gland. pp 555-556  J Oral Surgery Vol 34, June 1976 with comment p556 by Baurmash H DDS

Thomas AR: The Technique of Sialography p; 209-212 British Journ of Radiology  vol 29, Journal issue 340  April 1956