People with Sjogren's syndrome often tell their dentist the same thing: they brush well, they avoid lollies, and yet new cavities keep appearing. The reason is saliva. Sjogren's is an autoimmune condition in which the immune system damages the glands that make saliva and tears, and without a steady flow of saliva the teeth lose much of their everyday protection. The extra risk is real, but a routine built around the dry mouth can keep it in check.
Who gets Sjogren's
The condition is far more common in women. A 2015 meta-analysis of population studies by Qin and colleagues in the Annals of the Rheumatic Diseases found a female to male ratio of roughly nine to one, and an average patient age in the mid fifties. It can occur on its own (primary Sjogren's, now often called Sjogren disease) or alongside another autoimmune condition such as rheumatoid arthritis or lupus.
Dry eyes and dry mouth are the hallmark symptoms, but Sjogren's can also cause fatigue, joint pain and effects elsewhere in the body, which is why it is managed by a GP or rheumatologist rather than by a dentist alone.
What saliva normally does for your teeth
Saliva is easy to take for granted until it is missing. It washes food off the teeth, buffers the acids that plaque bacteria produce after you eat, and carries calcium and phosphate that help repair the earliest stages of enamel damage. It also contains proteins that keep bacteria and yeast in balance. When the flow drops, each of these jobs is done less well, and acid has longer to work on the enamel after every meal or snack.
How Sjogren's shows up in the mouth
A large 2026 systematic review and meta-analysis by Heizer and colleagues in the Journal of Dental Research compared adults with primary Sjogren's with people without it. Those with Sjogren's had higher decay scores and, on average, about two fewer teeth. They were also far more likely to have oral thrush (candidiasis), cracking at the corners of the mouth, a fissured or smooth tongue, altered taste and difficulty swallowing. Gum measurements, interestingly, did not differ much between the groups.
In daily life this can look like:
- needing a drink of water to swallow dry foods such as bread or crackers
- a burning or sore tongue, or a tongue that looks red and smooth
- sore, cracked lips and corners of the mouth
- food tasting different or bland
- decay appearing near the gum line or on the edges of front teeth, places that usually stay healthy
- dentures that rub or will not stay in well, because saliva helps them grip
Many of these overlap with dry mouth from other causes, such as medicines or radiotherapy. Our article on dry mouth and its causes covers the wider picture.
A daily routine for a dry mouth
The goal is to make up for some of the protection saliva would normally give, and to keep the enamel as resistant to acid as possible.
Strengthen the enamel
Brush twice a day with fluoride toothpaste, and spit rather than rinse afterwards so the fluoride stays on the teeth. Many people with Sjogren's are advised to use a high-fluoride toothpaste, which your dentist can recommend if it suits you. Professional fluoride varnish at check-ups adds another layer of protection.
Keep the mouth moist
Sip water through the day and keep a bottle within reach, including beside the bed. Saliva substitutes and moisturising gels can help, particularly at night when dryness is often worst. Sugar-free gum or lozenges can encourage whatever saliva the glands still make; products sweetened with xylitol are a common choice.
Cut down the acid attacks
Each sugary or acidic snack or drink starts another acid attack that saliva cannot easily neutralise. Keeping sweet foods to mealtimes, and choosing water between meals, matters more in a dry mouth than in a healthy one. Many people also find alcohol-based mouthwashes, alcohol, caffeine and smoking make dryness worse.
Watch for thrush
White patches that wipe off, a red and sore palate under a denture, or burning in the mouth can all be signs of thrush, which is much more common when saliva is low. It is treatable, so mention it early. Our guide to oral thrush in adults explains the signs.
Your dentist and your medical team work best together
Let your dentist know about your diagnosis and every medicine you take, since many common medicines also reduce saliva. Your GP or rheumatologist may prescribe medicine that stimulates saliva flow in some cases, and they look after the eye and whole-body side of the condition.
On the dental side, people with Sjogren's are often seen more frequently than the usual interval, so decay can be found while it is small and fluoride applied more often. Your dentist or OHT can suggest a recall interval that suits your level of risk. Our article on how cavities form and how to prevent them explains why early detection matters.
What prevention typically costs
Most of the extra care for Sjogren's is preventive, and prevention usually costs far less than repairing advanced decay. As a typical market range, a check-up and clean in Sydney is about $200 to $400, depending on what is included, such as X-rays and fluoride. These are general ranges, not Lumi fees. See our current deals page for current offers.
Questions patients with Sjogren's ask
Does Sjogren's itself damage the teeth?
Not directly. The damage comes from the lack of saliva, which leaves the enamel more exposed to acid and bacteria.
Will my dry mouth go away?
Sjogren's is a long-term condition, so the dryness usually persists. The symptoms and the dental risks can be managed with the steps above and regular care.
Can I still have implants, crowns or dentures?
Often yes, but a dry mouth affects how restorations and dentures are planned and cared for. Your dentist will take your saliva levels and decay risk into account.
Building a prevention plan
If you live with Sjogren's syndrome, our dentists and oral health therapists at Lumi Dental in Melrose Park can put together a prevention plan around your dry mouth, with regular checks and fluoride care. You can read about general dental care at Lumi Dental or book online.
This article is general information and not a substitute for personal advice from your dentist, GP, or rheumatologist.
