Swishing coconut oil in your mouth may reduce plaque and some bacteria, but it will not whiten teeth or replace brushing and flossing.
If you have seen the claims about oil pulling and wondered what coconut oil really does for your teeth, the short answer is less than the internet suggests. Coconut oil pulling may offer minor oral hygiene benefits, but the American Dental Association does not recommend it. Here is the evidence-based breakdown of what works, what does not, and what the practice can actually do for your smile.
Why People Swish Coconut Oil in Their Mouths
The practice, called oil pulling, comes from ancient Ayurvedic medicine. Supporters claim it removes toxins, whitens teeth, and fights cavities. The reality is narrower. The American Dental Association states there are no reliable scientific studies showing oil pulling reduces cavities, whitens teeth, or improves overall oral health. The ADA does not recommend it as a dental hygiene practice.
That does not mean the practice is worthless. A 2020 systematic review published in the Journal of International Society of Preventive & Community Dentistry found limited evidence that coconut-oil pulling may improve plaque index and oral hygiene. The evidence for reducing Streptococcus mutans — the main bacteria behind tooth decay — was not consistent across studies.
The Plaque Fighting Benefits
Coconut oil contains lauric acid, a fatty acid with natural antimicrobial properties. When swished around the mouth, it may help reduce some oral bacteria that contribute to plaque formation. The 2020 review found modest improvements in plaque scores among people who practiced oil pulling regularly.
This effect makes sense. Swishing any liquid — water, mouthwash, or oil — helps dislodge loose food particles and bacteria from teeth and gums. The oil’s texture also helps it coat the teeth and reach between them, where brushing sometimes misses.
That limited evidence may support coconut oil pulling as a supplemental practice — not a replacement for standard care. The ADA maintains it cannot recommend the practice as a substitute for brushing twice daily with fluoride toothpaste and flossing once daily.
What Coconut Oil Cannot Do for Your Teeth
The most common claim — that oil pulling whitens teeth — has no reliable backing. Tooth whitening requires bleaching agents that break down stains; oil simply coats the tooth surface.
Likewise, no quality study shows oil pulling prevents cavities or gum disease. Oral bacteria adhere to teeth in a sticky film called plaque, and that film requires mechanical removal through brushing and flossing. Oil swishing alone cannot scrape away established plaque or reverse existing decay.
How to Try Coconut Oil Pulling Safely
If you want to test whether oil pulling helps your mouth feel cleaner, the typical approach is straightforward:
- Place 1 tablespoon of coconut oil in your mouth — it works best at room temperature so it is liquid
- Swish for 10 to 20 minutes; shorter sessions still dislodge some debris
- Spit the oil into a trash bin, not the sink, because it can clog drains as it hardens
- Rinse your mouth with warm water, then brush normally with fluoride toothpaste
Do not swallow the oil. Swallowing can cause mild diarrhea or stomach upset. People with coconut allergies should avoid oil pulling entirely.
For most people, oil pulling is low risk when used as an occasional oral swish. The key is remembering its place: a possible supplement to good hygiene, not a substitute. If you are considering adding coconut oil to your routine, the best coconut oil for teeth and mouth health comes in varieties suited for this purpose.
| Claim | What the Evidence Shows |
|---|---|
| Reduces plaque | Limited evidence of modest improvement in plaque scores |
| Fights oral bacteria | Mixed evidence for Streptococcus mutans reduction |
| Whitens teeth | No reliable evidence of any whitening effect |
| Prevents cavities | No reliable studies showing cavity reduction |
| Replaces brushing | ADA explicitly warns against replacing standard care |
FAQs
Is swishing coconut oil dangerous?
For most people, oil pulling is low risk when used as an oral swish and spit out afterward. The main concerns are swallowing the oil, which may cause mild diarrhea, and the fact that people with coconut allergies must avoid it entirely. Spitting oil into sinks can also clog drains as it hardens.
How long should you swish coconut oil?
Studies and guides typically recommend swishing 1 tablespoon of coconut oil for 10 to 20 minutes, then spitting it into a trash bin and brushing afterward. Shorter sessions still dislodge some food particles and bacteria, so even five minutes provides a minor benefit.
Does oil pulling help with bad breath?
Oil pulling may temporarily improve breath by dislodging food particles and some odor-causing bacteria from the mouth. That effect is similar to rinsing with water or mouthwash. It is a cosmetic, short-term benefit and does not address the underlying causes of chronic halitosis like gum disease or tooth decay.
References & Sources
- American Dental Association. “Oil Pulling.” States no reliable scientific studies support cavity prevention or whitening claims.
- NCBI. “Effect of coconut oil pulling on plaque and gingival scores.” 2020 systematic review finding limited plaque-reduction evidence.
- NCBI. “Oil pulling: A review of its effectiveness.” Reviews evidence on Streptococcus mutans reduction and the limits of the practice.