Does submandibular gland reduction cause dry mouth during a face and neck lift?
⚠️ Contact your surgeon if you notice these symptoms after surgery
If you experience significant difficulty swallowing, severe or worsening dry mouth, swelling under the jaw, or any signs of infection (redness, fever, discharge) after your procedure, contact your surgeon promptly. A painful or rapidly growing swelling near the incision site could indicate a sialocele (saliva collection) or hematoma, both of which may need prompt attention.
Short answer
Dry mouth (xerostomia) after submandibular gland reduction in cosmetic surgery appears to be very rare. A review of over 1,600 patients who had the gland removed or reduced for aesthetic reasons found dry mouth in only 0.13% of cases (just 1 patient). However, removing the gland does reduce unstimulated saliva flow, so a small degree of change in mouth moisture is biologically possible.
What the research shows
A review of 11 studies covering 1,651 patients who had submandibular gland resection as part of facial rejuvenation found that xerostomia (dry mouth) occurred in only 0.13% of patients, meaning just 1 person out of the entire group reported it as a complication. [6] Other complications like hematoma, nerve injury, and neck firmness were more commonly reported than dry mouth.
A separate study of cancer patients who had their submandibular gland surgically removed found that the unstimulated (resting) saliva flow was lower in the group that had the gland removed compared to those who did not. However, when patients were stimulated to produce saliva (for example, while eating), there was no significant difference in flow between the two groups. About 21% of those who had gland removal reported some sensation of dry mouth, compared to 7% in the comparison group. [1] Importantly, those cancer patients often had other complicating factors like radiation therapy, making a direct comparison to cosmetic surgery patients difficult.
Why cosmetic cases are likely different
In a face and neck lift, surgeons typically perform a partial reduction of the submandibular gland, not a complete removal. The aesthetic procedure aims to improve neck contour while preserving as much gland tissue as possible. [6] By contrast, the cancer surgery studies involved complete gland excision, often alongside other treatments. This distinction is important because even partial gland preservation likely maintains enough saliva production to avoid noticeable dryness. The submandibular gland works alongside the parotid glands and hundreds of minor salivary glands throughout the mouth, all of which continue to function normally after a neck lift procedure. [1]
What this means for you
Based on current evidence, the risk of developing meaningful dry mouth from submandibular gland reduction in a cosmetic face and neck lift is very low, around 0.13% in the reviewed studies. [6] That said, every patient is different. People who already have reduced saliva production (for example, those taking certain medications or with autoimmune conditions) may be at slightly higher risk. It is worth discussing your personal health history with your surgeon before the procedure to get a realistic picture of your individual risk.
What to ask your surgeon
Before your procedure, consider asking: How much of the gland will be removed versus reduced? What is your personal complication rate for dry mouth? Are there any factors in my health history that could increase my risk? What should I do if I notice mouth dryness after surgery? Having these conversations ahead of time helps set realistic expectations and ensures you have a plan if any symptoms arise after your procedure. [6]