Is mouthwash necessary?
For most people mouthwash is not necessary if they brush twice a day with fluoride toothpaste and clean between their teeth daily. A fluoride rinse can help people at higher risk of decay, and an antiseptic rinse such as chlorhexidine may be advised for a short time after surgery or during gum treatment. No mouthwash removes tartar or replaces brushing. At Creative Arts in Dubai, the dentist advises whether a rinse suits you.
Who treats you here Dr. Duaa Ameen General Dentist · Dr. Julia General Dentist · Dr. Taban Ameen Dentist
Every dentist’s licence can be checked on the DHA Sheryan medical directory.
What can mouthwash do, and what can it not do?
Plaque is a sticky film that clings to teeth. To remove it, something has to touch it: bristles, floss or an interdental brush. A rinse washes over the surface, so it can deliver an ingredient, such as fluoride or an antiseptic, and it can freshen the mouth for a while. What it cannot do is lift established plaque from between the teeth or below the gum line, or remove tartar.
That is why the evidence for rinses is about adding them to good cleaning, not replacing it. It is also why a mouthwash that makes the mouth feel clean can be misleading: the gums may still be inflamed underneath, and a strong taste can mask bad breath that is coming from gum disease, decay or a broken filling. If you find yourself relying on mouthwash to feel confident about your breath, our page on bad breath explains the usual causes and how they are treated.
What types of mouthwash are there, and who are they for?
Rinses are grouped by what they are meant to do. Read the label for the active ingredient rather than the marketing claim on the front.
| Type | Main purpose | Who it may suit | Points to know |
|---|---|---|---|
| Fluoride rinse | Strengthens enamel and helps prevent decay | People at higher risk of decay: braces, dry mouth, exposed roots, frequent new cavities | Used at a different time from brushing; no eating or drinking for 30 minutes afterwards |
| Chlorhexidine (prescription-strength antiseptic) | Strongly reduces plaque build-up for a short period | After oral surgery or extractions, during some gum treatments, or when brushing is temporarily difficult | Short-term use as your dentist advises; can stain teeth brown, alter taste and add to tartar |
| Other antiseptic rinses for daily use | Modest reduction of plaque and gum inflammation alongside cleaning | Some people with gum inflammation, as an addition to brushing and interdental cleaning | Benefits are smaller than those of good mechanical cleaning |
| Alcohol-free rinses | Same purposes without alcohol | Dry mouth, sensitive or sore mouths, people who avoid alcohol | Check the active ingredient; alcohol-free describes the base, not the effect |
| Cosmetic or breath-freshening rinses | Temporary fresh taste | Anyone wanting a short-term fresh feeling | Mask odour rather than treat its cause |
| Whitening rinses | Claim to reduce surface stain | People with light surface stain | Limited effect compared with professional cleaning or dentist-supervised whitening |
If you are pregnant, have a medical condition or take regular medication, ask your dentist or pharmacist before starting a medicated rinse.
When should you use mouthwash: before or after brushing?
Not straight after brushing. The fluoride left on your teeth by toothpaste keeps working after you spit, and rinsing with water or mouthwash immediately washes much of it away. NHS advice is to spit out the toothpaste without rinsing, and to use a mouthwash at a different time of day, for example after lunch. After a fluoride mouthwash, the NHS advises not eating or drinking for 30 minutes.
Chlorhexidine has its own timing rule: some toothpaste ingredients reduce its effect, so it is usually used at a separate time from brushing rather than immediately after. Follow the instructions you were given with it, including how long to rinse and for how many days.
A practical routine for someone who has been advised a daily fluoride rinse might be: brush and clean between the teeth morning and night, spit without rinsing, and use the fluoride rinse once in the middle of the day, then nothing to eat or drink for half an hour. Our guide to how to brush your teeth properly covers the brushing part.
Is chlorhexidine mouthwash safe to use every day?
Chlorhexidine is an effective antiseptic, which is why dentists recommend it after extractions, oral surgery and some gum treatments. A 2017 Cochrane review found that adding chlorhexidine to brushing gave a large reduction in plaque build-up. The same review reported that rinsing for four weeks or longer causes tooth staining that may need professional cleaning to remove, and that other effects include extra tartar, temporary changes in taste and irritation of the lining of the mouth.
For that reason it is usually a short-course rinse, used for the number of days your dentist or surgeon advises, rather than an everyday product. If your gums need ongoing help, the long-term answer is usually professional gum treatment and better cleaning between the teeth, not months of chlorhexidine. Our guide to whether gum disease can be reversed explains what home care can and cannot achieve. For rinsing after an extraction, follow the timing in your written aftercare; our post-operative care guide gives the general principles.
Which mouthwash, if any, fits your situation?
Common situations and the usual starting point. Your dentist may advise differently after examining you.
| Your situation | Usual advice | Why |
|---|---|---|
| Healthy teeth and gums, good routine | No mouthwash needed | Fluoride toothpaste and daily interdental cleaning already do the job |
| Wearing braces or aligners | A fluoride rinse at a different time from brushing | Plaque around brackets raises the risk of white marks and decay |
| Dry mouth | An alcohol-free rinse, often with fluoride, and a check of the cause | Saliva normally protects teeth; less of it raises decay risk |
| After an extraction or oral surgery | Follow your written aftercare, often gentle rinsing from the day after and sometimes a short course of antiseptic | Protects the healing site without disturbing the blood clot |
| Bleeding gums | A gum check first; a rinse only as an addition to cleaning | A rinse can make gums look calmer while inflammation continues below |
| Bad breath that keeps coming back | Find the cause before choosing a rinse | Gum disease, decay, tongue coating or a medical cause may be behind it |
| Children | Ask the dentist before using any mouthwash | Young children may swallow it; see our guide to children's toothpaste and brushing |
Prevention works best when it is tailored. At a check-up, the dentist looks at your decay risk and gums and tells you whether a fluoride rinse, an antiseptic or no rinse at all suits you.
See preventive dentistryDoes alcohol in mouthwash matter?
Alcohol is used in some rinses to dissolve and carry the other ingredients. It does not make a mouthwash work better, and it can sting a sore mouth, dry out the lining of the mouth and be unwelcome for people who avoid alcohol for religious, health or personal reasons. Alcohol-free versions of most types of rinse are widely available.
Choosing alcohol-free is a reasonable default if you have a dry mouth, mouth ulcers, a sensitive mouth or you simply prefer it. Check the active ingredient either way: alcohol-free tells you what the rinse is made in, not what it does. If you have a persistently dry mouth, our page on dry mouth explains the causes and how to protect your teeth.
What matters more than any mouthwash?
If you are deciding where to put your effort, the order is clear. First, brushing twice a day with a fluoride toothpaste; our guide to choosing a toothpaste explains what to look for. Second, cleaning between the teeth once a day; our guide to flossing and water flossers helps you pick a tool. Third, cutting down how often you have sugary food and drinks. Then regular check-ups and professional cleaning at the interval your dentist sets.
A mouthwash comes after those, for specific reasons. Used that way, it can help. Used as a shortcut, it gives a fresh taste while plaque stays where it was.