Summary
What is baking soda and why is it used on teeth?
Definition: a natural abrasive agent with multiple uses
Baking soda, also called sodium bicarbonate, is an alkaline mineral powder. It's best known for cleaning the house, making cakes rise, or soothing heartburn. But in recent years, it has also been making its way into our bathrooms.
Its slightly grainy texture allows it to "polish" surfaces … including tooth enamel. The powder therefore acts as a gentle scrub on our teeth . This property is what makes it so popular in some homemade toothpaste recipes.
How does it act on the tooth surface?
Imagine ultra-fine sandpaper gently polishing the surface of your enamel. That's exactly what happens when you rub baking soda on your teeth. It removes superficial stains, like those left by your morning coffee or afternoon tea.
But we must remain cautious:
It is not a chemical bleaching agent .
Its abrasive power can quickly become problematic if used too frequently.
Why is it known for whitening teeth?
The explanation is simple: by removing surface stains, it immediately gives the impression of cleaner teeth. But be aware, this is a temporary effect, far from the deep whitening achieved at the dentist's office.
Origin of this practice and its popularity on the Internet
For a long time, some people have used baking soda as a "natural" alternative to toothpaste . With social media, the trend has grown: before-and-after videos, homemade recipes, sometimes questionable mixtures with lemon… The problem? Our teeth don't grow back. Misinformation can cause irreversible damage, hence the importance of always consulting a qualified oral health professional.
The supposed benefits of baking soda on teeth
1. Whitening effect: reality or myth?
It does give the impression of whiter teeth, but it's not a medical whitening treatment. In reality, it primarily works on the discolored stains that accumulate on the enamel.
Your teeth may look “cleaner”, but it’s more of a freshening touch than a true brightening treatment.
2. Deodorizing power against bad breath
Its alkaline pH neutralizes the bacteria and acids responsible for bad breath , giving that feeling of freshness. But it doesn't replace brushing, interdental cleaning, or finding the real cause of bad breath. It's a quick fix, not a lasting solution.
3. Mechanical action against plaque and superficial stains
Its slightly abrasive texture helps remove some plaque and small stains caused by coffee, tea, red wine, tobacco, or staining foods. This polishing action makes teeth smoother and shinier. However, this same abrasiveness can damage enamel if used too frequently .
4. An economical alternative to whitening toothpastes
Its attractive price and immediate availability appeal to many people. But keep in mind that whitening toothpastes recommended by dentists remain much safer, as their abrasive power is perfectly controlled.
The potential dangers of baking soda for teeth
1. Risk of tooth enamel abrasion
Enamel is a protective layer that, once removed, never returns. Because of its abrasive nature, baking soda can:
User email,
Making teeth more vulnerable to cavities,
Promote staining
To cause a dull or yellowish appearance.
2. High tooth sensitivity
When tooth enamel thins, the dentin becomes exposed. As a result, you suddenly feel cold, hot , sweet ... and even the air you breathe can become unpleasant. This sensitivity can become permanent if you continue to use baking soda excessively.
3. Gum irritation
Baking soda can irritate our gums, especially if we brush vigorously or if they are naturally sensitive. This can lead to redness , inflammation , slight bleeding , or persistent discomfort.
4. Oral pH imbalance
Bicarbonate, being highly alkaline, can disrupt the oral microbiota and lead to:
Dry mouth,
An imbalance in the oral microbiota,
A pasty mouth sensation .
For a healthy mouth, you need to find the right balance: neither too acidic nor too alkaline.
5. Risk of excessive use
Some videos recommend using it every day. As you can imagine, that's a very bad idea! Because it's precisely the repeated use that causes most of the damage.
Dentists recommend not exceeding once a week , and only on teeth that are not very sensitive.
How to use baking soda on teeth safely?
1. How often is it used?
Dentists are adamant: it's for occasional use, not daily. Once a week is plenty. And if you have sensitive teeth or fragile gums, even less often.
2. What quantity should be used?
No need to use too much! A small pinch of baking soda is more than enough. Too much powder could damage your teeth without being any more effective.
3. Best practices
To minimize risks and enjoy a gentle polishing effect, here are the golden rules:
Choosea soft brush ,
Mix the baking soda with a little water or mild toothpaste.
Opt for brushing for a maximum of 30 seconds.
Avoid if you have sensitive teeth or irritated gums.
4. Safer alternatives
If you're looking to whiten your teeth , baking soda isn't the only option, nor the best one. Here are some safer alternatives:
Dentist-approved whitening toothpastes : they contain gentle polishing agents and controlled abrasiveness, specially designed not to damage enamel.
- Professional whitening treatments : these are performed by a dentist using safe products. They are the only treatments that provide truly deep whitening.
Dentists' views on baking soda
Clinical studies and scientific opinions
Research shows several important points regarding bicarbonate:
Using it too often can eventually damage the enamel.
It is effective for superficial stains, but not for deeper ones.
Unlike professional treatments, it does not change the natural color.
It offers absolutely no protection against cavities.
Its effect on breath is very temporary.
What dentists say: only occasional use
Dentists are unanimous: baking soda should only be used occasionally, never as a replacement for toothpaste, and certainly not every day! They particularly emphasize a crucial point: unlike skin, tooth enamel does not regenerate. Once it's gone, it's gone for good.
The risks? Tooth sensitivity that can become permanent, especially if your gums are fragile or if you tend to clench your teeth.
Bicarbonate-based products approved by professionals
There are toothpastes containing bicarbonate… but the difference is enormous compared to using the powder on its own. These professional products:
They use bicarbonate with controlled particle size,
They have tested and controlled abrasiveness,
They contain protective agents such as fluoride ,
They are designed for safe daily use.
The result: they clean gently without damaging the enamel. Homemade baking soda powder, on the other hand, does not offer these safety guarantees.
Natural alternatives to baking soda for whiter teeth
Activated charcoal: effective but also abrasive
Let's talk about activated charcoal, which is also very popular. Its absorbent properties help to reduce some surface stains , but it's just as abrasive. Regular use can weaken enamel, and its action is limited to the surface. Therefore, it should be used sparingly, and especially not if you have sensitive teeth!
Coconut oil and oil pulling
This ancient method from Ayurveda involves swishing coconut oil in the mouth for 5 to 15 minutes. Its benefits?
It reduces bacteria.
It gives a pleasant feeling of freshness.
Contributes to a brighter smile.
It's not a true whitening agent, but it's excellent for oral hygiene , without the slightest risk of abrasion.
Fruits rich in malic acid
Strawberries, apples, pineapples... These fruits contain a natural compound that can slightly reduce stains. However, beware of misconceptions: acid is still acid, and these fruits should be eaten; they should not be applied directly to your teeth.
Remineralizing toothpastes with fluoride and calcium
This option is really interesting because they strengthen enamel, reduce tooth sensitivity, smooth the surface of teeth, and prevent the appearance of bacteria and new colored deposits.
You'll get smoother teeth that reflect light better, hence the brightening effect. It's also one of the solutions most recommended by dentists.
Preserve the whiteness of teeth naturally
Daily oral hygiene: brushing, flossing, rinsing
The foundation of a beautiful smile is a simple and effective routine:
Brush your teeth twice a day for two minutes .
Opt for a soft brush ,
Don't forget dental floss orinterdental brushes .
And possibly supplement with an alcohol-free mouthwash .
Reduction of food colorings
We know that some of our little pleasures are real enemies: coffee, tea, red wine, sodas, soy or tomato sauces, tobacco. So the idea isn't to eliminate everything, but to be more mindful, especially with these habits:
Drink some water afterwards.
Rinse your mouth with water,
Use a straw for dark drinks.
Regular checkups with the dentist for teeth cleaning
Scaling is like a reset for your teeth. It removes tartar and stubborn stains, cares for your gums, and leaves your teeth smooth. The result? Without tartar, they appear naturally whiter . Ideally, you should have it done every 6 to 12 months.
A balanced diet and sufficient hydration
What we eat directly influences the health of our mouth. Crunchy foods like apples, carrots, or celery naturally cleanse the mouth . Water, meanwhile, plays a vital role in rinsing away residue and bacteria, stimulating saliva, and balancing the mouth's pH.
Frequently asked questions about baking soda for teeth
Does baking soda damage teeth?
Yes, if it is used too often. Its abrasive effect can wear down the enamel and make teeth sensitive.
Is it safe to brush your teeth every day with baking soda?
No, it is strongly discouraged! Using it once a week is more than enough.
How to whiten your teeth naturally and safely?
By adopting good oral hygiene, limiting food colorings and using gentle whitening or remineralizing toothpastes.
Baking soda and lemon: good or bad idea?
Very bad idea. Lemon is acidic: combined with bicarbonate, it increases the risk of enamel erosion.
What is the difference between food-grade and household bicarbonate?
Food-grade bicarbonate is pure and intended for consumption. Household bicarbonate may contain impurities: never use it on your teeth.
Can bicarbonate be used on sensitive gums?
It's best to avoid it. It can further irritate the gums and increase discomfort.
