Salivary Gland Stones

What is salivary gland stones?

Salivary gland stones, known medically as sialolithiasis, are small, hardened mineral deposits that form inside the salivary glands or in the narrow tubes (ducts) that carry saliva from the glands into the mouth. Saliva is the fluid that keeps your mouth moist, helps you chew and swallow food, and begins the process of digestion. When a stone forms, it can partially or completely block the flow of saliva, causing the gland to swell and become painful, especially around mealtimes.

The human body has three pairs of major salivary glands. The submandibular glands sit beneath the lower jaw, the parotid glands lie in front of the ears along the cheeks, and the sublingual glands rest under the tongue. Most salivary gland stones develop in the submandibular glands. This is thought to be because the duct from these glands travels upward against gravity, is relatively long and narrow, and carries saliva that is thicker and richer in minerals such as calcium. Stones in the parotid glands are less common, and stones in the sublingual glands or in the hundreds of tiny minor salivary glands scattered around the mouth are rare.

Salivary gland stones can affect people of any age but are most often diagnosed in adults, particularly between the ages of 30 and 60. They appear to be somewhat more common in men. Children can develop them, but this is unusual. Most stones are small, sometimes only a few millimeters across, though in some cases they grow larger over time. A person may have a single stone or, less often, several stones in the same gland or duct.

Many people first ask “what is salivary gland stones” after noticing a tender swelling under the jaw or in the cheek that comes and goes with eating. Understanding what the condition is, how it is diagnosed, and what treatment options exist can make the experience much less worrying, because in many cases the problem can be managed effectively and the affected gland can return to normal function.

Symptoms of salivary gland stones

Salivary gland stones symptoms depend on the size of the stone, where it sits, and how much it blocks the flow of saliva. A very small stone that does not block the duct may cause no symptoms at all and may only be found by chance on an imaging scan done for another reason. When a stone does obstruct saliva flow, the classic pattern is swelling and discomfort that gets worse when the gland is stimulated, which is usually while eating or even when thinking about or smelling food.

Common symptoms include:

• Swelling of the affected gland — a lump or fullness under the jaw, under the tongue, or in the cheek in front of the ear, often appearing or worsening at mealtimes.
• Pain or tenderness — ranging from a dull ache to sharp pain, typically triggered or intensified by eating.
• Symptoms that come and go — the swelling often eases over minutes to hours after a meal as trapped saliva slowly drains past the blockage.
• Dry mouth on one side — reduced saliva flow from the blocked gland.
• A gritty or hard lump — sometimes the stone itself can be felt, or even seen, near the opening of the duct in the floor of the mouth or inside the cheek.
• Bad taste in the mouth — especially if infection develops and pus drains into the mouth.

Symptoms often differ by stage. In the early stage, when the blockage is partial, swelling and discomfort typically flare with meals and then settle. If the duct becomes more completely blocked, the swelling may persist between meals and the pain may become constant. When trapped saliva becomes infected, a condition called sialadenitis (infection or inflammation of a salivary gland) can develop. Signs of infection include increasing pain, redness of the skin over the gland, warmth, fever, chills, and sometimes pus at the duct opening in the mouth. Rarely, an untreated infection can progress to an abscess, which is a collected pocket of pus, and this needs prompt medical care.

Symptoms can also differ by gland. Submandibular stones usually cause swelling and pain under the jaw and in the floor of the mouth, while parotid stones cause swelling of the cheek in front of and below the ear. Because parotid ducts are narrower, even small stones there can cause noticeable symptoms.

Causes and risk factors

Salivary gland stones causes are not fully understood, and in many people no single cause is ever identified. Stones form when minerals in saliva, mainly calcium salts, gradually crystallize around a tiny core of cells, mucus, or debris inside the gland or duct. Anything that slows the flow of saliva or makes it thicker appears to increase the chance that these crystals will form and grow.

Recognized risk factors and contributing conditions include:

• Dehydration — not drinking enough fluids makes saliva more concentrated and sluggish, which encourages mineral deposits.
• Reduced saliva production — this can result from certain medications, including some antihistamines, blood pressure medicines, antidepressants, bladder-control drugs, and diuretics (medicines that increase urine output).
• Medical conditions that dry the mouth — for example Sjögren’s syndrome, an autoimmune condition in which the body’s immune system attacks moisture-producing glands.
• Smoking — tobacco use may alter saliva composition and reduce its natural cleansing properties.
• Gout — a condition of uric acid buildup; the rare stones associated with gout may contain uric acid rather than calcium.
• Trauma or irritation to the duct — injury inside the mouth may narrow a duct or create a starting point for a stone.
• Previous salivary gland infection or inflammation — inflamed ducts drain saliva less efficiently.
• Radiation therapy to the head and neck or radioactive iodine treatment — both can damage salivary tissue and reduce saliva flow.

It is important to know that salivary gland stones are generally not related to diet in the way kidney stones sometimes are, and having a salivary stone does not mean you have too much calcium in your blood. Most people who develop a stone have normal calcium levels. The condition is also not contagious and is not a sign of poor oral hygiene, although good hydration and mouth care may help reduce the risk of complications.

Diagnosis of salivary gland stones

Salivary gland stones diagnosis usually begins with a conversation about your symptoms and a physical examination. A doctor will ask when the swelling occurs, whether it is linked to meals, and whether you have had fever or pus in the mouth. During the examination, the doctor may gently feel along the floor of the mouth, under the jaw, and over the cheeks. Some stones near the duct opening can be felt as a firm lump, and gentle pressure on the gland may show whether saliva, cloudy fluid, or pus emerges from the duct opening.

Because not all stones can be felt, imaging tests are often used to confirm the diagnosis and locate the stone precisely:

• Ultrasound — a painless scan using sound waves; it is often the first imaging test because it can show many stones, gland swelling, and dilated ducts without any radiation.
• X-ray — plain dental or facial X-rays can show many calcium-containing stones, though some stones do not appear on X-ray.
• CT scan (computed tomography) — a detailed cross-sectional X-ray study that is very sensitive for detecting stones, including small ones, and for assessing infection or abscess.
• Sialography — an older technique in which a contrast dye is injected into the duct before X-rays; it is used less often today and is avoided during active infection.
• MRI or MR sialography — scans using magnetic fields that can show the ducts and soft tissues without radiation, sometimes used when other tests are inconclusive.
• Sialendoscopy — a procedure in which a very thin, flexible telescope is passed into the salivary duct through its natural opening in the mouth; it allows the doctor to see the stone directly and can often be used to treat it at the same time.

There is no single blood test that confirms a salivary stone, but if infection is suspected your doctor may order blood tests to check for signs of inflammation. Part of the diagnostic process is also ruling out other causes of salivary gland swelling, such as viral infections, blocked ducts from scar tissue, cysts, or, rarely, tumors. Persistent swelling that does not vary with meals, or a hard painless lump that keeps growing, may prompt additional tests to exclude these other conditions.

Treatment options for salivary gland stones

Salivary gland stones treatment depends on the size and location of the stone, how severe the symptoms are, and whether infection is present. Care for this condition is typically provided by ear, nose, and throat specialists; at Acibadem, for example, it is managed within the Otorhinolaryngology (ENT) department, often together with radiologists and, when needed, oral and maxillofacial surgeons.

Conservative (watchful) management

Many small stones pass on their own or can be encouraged to pass with simple measures. Your doctor may first recommend:

• Hydration — drinking plenty of fluids to keep saliva flowing and thin.
• Sialogogues — substances that stimulate saliva, such as sour sugar-free candies or lemon drops; the increased flow may help flush a small stone out of the duct.
• Warm compresses and gentle massage — massaging the gland in the direction of the duct opening can sometimes help move a stone forward.
• Pain relief — over-the-counter pain relievers such as acetaminophen or ibuprofen, if suitable for you, can ease discomfort while the stone passes.

Medication

If the gland becomes infected, your doctor may prescribe antibiotics to treat the bacterial infection. Antibiotics do not dissolve or remove the stone itself, so the underlying blockage may still need treatment after the infection settles.

Minimally invasive procedures

When a stone does not pass on its own, several procedures can remove it while preserving the gland:

• Manual removal through the duct opening — a stone lodged very close to the duct opening in the mouth can sometimes be pushed out or removed through a small cut in the duct under local anesthesia.
• Sialendoscopy — the same thin telescope used for diagnosis can carry tiny instruments, such as baskets or grasping tools, to capture and remove the stone through the natural duct opening. This gland-preserving approach is now widely used for suitable stones and often avoids external cuts.
• Lithotripsy — a technique that uses focused shock waves or laser energy to break a stone into smaller fragments that can then pass or be removed. Availability varies, and not all stones are suitable.
• Combined approaches — for larger or awkwardly placed stones, surgeons may combine sialendoscopy with a small incision inside the mouth or, occasionally, a small external incision to reach the stone directly.

Surgery

If a stone is very large, cannot be reached by other methods, or if the gland has been repeatedly infected and permanently damaged, surgical removal of the entire gland may be recommended. Removal of the submandibular gland or part of the parotid gland is generally performed under general anesthesia. Because other salivary glands continue to produce saliva, most people do not develop a permanently dry mouth after one gland is removed. As with any operation, surgery carries risks, including bleeding, infection, scarring, and, particularly with parotid surgery, a risk of temporary or, less commonly, lasting weakness of nearby facial nerve branches. Your surgical team will explain the specific risks and benefits in your situation before any decision is made.

Which option is best varies from person to person. In many cases, doctors start with the least invasive approach and move to procedures or surgery only if simpler measures do not work.

Living with salivary gland stones and outlook

The outlook for people with salivary gland stones is generally good. Many small stones pass without any procedure, and modern gland-preserving techniques such as sialendoscopy allow most remaining stones to be removed without losing the gland. After a stone is cleared, the gland often recovers its function, and swelling and mealtime pain typically resolve.

Some people, however, develop stones more than once. If a gland has been blocked or infected repeatedly, it may become scarred and less able to produce saliva, and in a minority of cases removal of the gland eventually becomes the most practical solution. Because outcomes vary, no doctor can guarantee that a stone will not return, but sensible everyday habits may lower the risk of new stones and complications:

• Drink enough fluids throughout the day, particularly in hot weather or during illness.
• Practice good oral hygiene, including regular brushing and dental checkups, to reduce the bacteria that can infect a blocked gland.
• If you smoke, ask your doctor about support to quit.
• Review your medications with your doctor or pharmacist if you notice a persistently dry mouth; do not stop any prescribed medicine on your own.
• Stimulate saliva flow naturally with sugar-free gum or sour sugar-free candies if your doctor agrees this is suitable for you.

If you have a condition such as Sjögren’s syndrome or have had radiation to the head and neck, ongoing follow-up with your medical team can help catch and manage salivary problems early.

Frequently asked questions

What is salivary gland stones and is it dangerous?

Salivary gland stones are hardened mineral deposits that block the flow of saliva from a salivary gland into the mouth, causing swelling and pain, often at mealtimes. For most people the condition is uncomfortable rather than dangerous. The main risk is infection of the blocked gland, which usually responds to treatment when addressed promptly. Serious complications such as an abscess are uncommon, especially when the stone is treated in a timely way.

Can salivary gland stones go away on their own?

Small stones located near the duct opening often pass on their own, and simple measures such as staying well hydrated, sucking on sour sugar-free candies, applying warm compresses, and gently massaging the gland can help. Larger stones or stones lodged deeper in the duct or gland are less likely to pass by themselves and may need a procedure. If symptoms persist for more than a few days or keep coming back, it is sensible to see a doctor.

What do salivary gland stones symptoms feel like?

The most typical experience is a swelling under the jaw or in the cheek that appears or worsens when you eat, together with a dull ache or sharper pain in the same area. The swelling often eases between meals. Some people also notice a dry mouth on one side, a bad taste, or a hard lump they can feel with their tongue or fingers. Fever, redness, and constant pain suggest infection and warrant prompt medical attention.

How do doctors confirm salivary gland stones diagnosis?

Doctors usually combine a physical examination of the mouth, jaw, and neck with imaging tests. Ultrasound is often the first test, and a CT scan can detect even small stones with high accuracy. In some cases, a thin telescope called a sialendoscope is passed into the salivary duct to see the stone directly. These tests also help rule out other causes of gland swelling, such as infections, cysts, or, rarely, tumors.

What is the best salivary gland stones treatment?

There is no single best treatment for everyone; the right approach depends on the stone’s size, location, and your symptoms. Small stones are often managed conservatively with hydration, saliva stimulation, and massage. Stones that do not pass may be removed through the duct opening, with sialendoscopy, or with techniques that break the stone into fragments. Surgery to remove the gland is generally reserved for large, unreachable stones or glands damaged by repeated infection. An ear, nose, and throat specialist can advise which option suits your situation.

Is removal of a salivary gland stone painful, and how long is recovery?

Most minimally invasive removals are done under local or general anesthesia, so the procedure itself should not be painful, although some soreness and swelling afterward is normal and usually manageable with simple pain relievers. Recovery after removal through the mouth or by sialendoscopy is often quick, with many people returning to normal activities within days. Recovery after gland-removal surgery takes longer and varies from person to person; your surgical team will give you individual guidance.

Do salivary gland stones come back after treatment?

They can. Some people form only one stone in their lifetime, while others develop new stones over the years, particularly if underlying factors such as chronic dry mouth or duct narrowing remain. Staying well hydrated, maintaining good oral hygiene, and addressing conditions or medications that reduce saliva flow may lower the risk, but no measure can completely guarantee that stones will not recur.

When to see a doctor

Make an appointment with a doctor if you notice a swelling under your jaw, under your tongue, or in your cheek that appears with meals, keeps returning, or does not settle within a few days, or if you can feel a hard lump in the floor of your mouth. Persistent one-sided dry mouth or repeated mealtime pain also deserves evaluation.

Seek urgent medical care if you experience any of the following red-flag warning signs:

• Fever and chills together with a painful, swollen salivary gland, which may signal infection.
• Rapidly increasing swelling, redness, or warmth of the skin over the gland.
• Pus or a foul taste draining into your mouth from the duct opening.
• Difficulty swallowing, opening your mouth, or breathing — swelling in the floor of the mouth or neck that affects breathing is an emergency.
• Severe pain that is not controlled by over-the-counter pain relievers.
• A hard, painless lump that keeps growing or does not change with meals, which should be checked to rule out other conditions.

Early assessment allows infections to be treated before complications develop and makes gland-preserving treatments more likely to succeed. If you are unsure whether your symptoms need urgent attention, it is always reasonable to seek medical advice promptly.