Most of us reach for mouthwash without thinking twice, pouring a brightly coloured liquid into the cap and believing the higher the price tag, the more effective it is. However, according to one dentist, there’s no need to splash out on expensive branded bottles to maintain good oral hygiene.
In fact, one of the most powerful rinses might already be tucked away in your kitchen cupboard. With household finances stretched and winter bugs circulating, dentists are increasingly highlighting that straightforward, traditional remedies still have an important role in contemporary oral care.
One such solution is a warm salt water rinse, a treatment that costs mere pennies per use and has been trusted for generations.
Dr Mark Kurchak, an orthodontist at Smileie in the US, explained that salt water is frequently dismissed because it seems too basic to work, but the science supporting it is robust.
« Salt water works because it creates an environment in the mouth that bacteria struggle to survive in, » Dr Kurchak said. « It draws fluid out of inflamed tissues, which can help reduce swelling, calm irritation and support the body’s natural healing process. »
He noted this is precisely why salt water is regularly recommended following dental procedures, during periods of gum inflammation, or when someone is experiencing mouth ulcers or discomfort. « When you rinse with warm salt water, you are gently cleaning the mouth without harsh chemicals, » he explained.
« It helps flush out debris, reduces bacterial load, and can soothe tender areas without disrupting the natural balance in your mouth. »
In contrast to many commercial mouthwashes, salt water is free from alcohol, artificial flavourings or potent antiseptics, which can occasionally leave the mouth feeling parched or irritated with frequent use.
It’s been recommended as an old-fashioned method that’s effective (Image: Pexels)
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The connection between oral health and overall wellbeing
Dr Kurchak emphasised that maintaining good oral hygiene offers benefits that extend well beyond fresh breath.
« Oral health is closely linked to systemic health, » he stated. « Chronic gum inflammation has been associated with conditions such as heart disease, diabetes and respiratory infections. Looking after your gums is not just about your smile, it is about protecting your whole body. »
He further noted that controlling inflammation in the mouth might also help lessen the severity of seasonal ailments.
« When your gums are inflamed or infected, your immune system is already under strain, » he clarified. « Anything you can do to reduce that burden may help your body respond better to things like sore throats, colds and flu-like viruses. »
This is consistent with NHS guidance, which confirms that salt water gargles can help ease sore throats and may provide some comfort during upper respiratory infections.
Why it genuinely costs pennies
The attraction of salt water extends beyond medical benefits to financial advantages. A large bag of ordinary cooking salt can last for months, potentially longer, with each rinse requiring only a modest amount mixed with warm water.
Dr Kurchak highlighted that this makes it an accessible choice for those wanting to maintain oral health without investing heavily in specialist products.
« You are talking about a solution that costs less than a penny per use, » he said. « Compared to mouthwashes that can cost £4 or £5 per bottle, it is a significant saving, especially for families. »
How and when to use salt water safely
Whilst salt water offers clear advantages, Dr Kurchak emphasises that it should be used sensibly.
« More is not always better, » he said. « Using salt water too frequently or with too much salt can irritate the gums and potentially make bleeding worse, especially if your gums are already sensitive. »
He advised using a mild solution and restricting rinses to once or twice daily during periods of irritation, rather than as a permanent substitute for other oral care products.
« For most people, a gentle rinse after brushing or during a sore throat is enough, » he said. « It should feel soothing, not sting. »
Those on low-sodium diets should also exercise caution « If you are required to limit salt intake for medical reasons, it is important to speak to your GP or dentist before using salt water regularly, » Dr Kurchak explained. « While you are not meant to swallow it, small amounts can still be absorbed, and it is better to be safe. »
What salt water cannot replace
While championing salt water rinses, Dr Kurchak emphasised they should never substitute proper dental hygiene practices.
« Salt water does not replace toothpaste, » he stated. « Fluoride toothpaste remains essential for protecting enamel, preventing cavities and strengthening teeth. »
NHS guidance advocates brushing twice daily for approximately two minutes using fluoride toothpaste – advice Dr Kurchak emphatically supports.
« Think of salt water as a helpful addition, not a replacement, » he advised. « It supports gum health and comfort, but brushing and flossing are still the foundation of oral care. »
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