Choosing the right toothbrush and toothpaste for your family

Half an aisle of options, and most of the differences between them do not matter. Here is what actually does.

Toothbrushes: soft bristles, always

Use a soft or extra-soft brush. Every member of the family, every time.

Medium and firm brushes are still sold, and they are a bad idea. They do not clean better. What they do is wear away enamel at the gumline and push gums into receding — and neither of those grows back. If you have ever seen someone with notched, sensitive wedges at the gumline of their teeth, that is usually years of firm bristles and scrubbing pressure.

The cleaning is done by the bristle tips reaching the plaque, not by force. Pressing harder just bends the bristles flat so they touch less of the tooth.

Also look for: a head small enough to reach behind your back molars, and a handle you find comfortable. That is genuinely the whole list.

How to tell you are pressing too hard

You do not need a pressure sensor to find out. Look at the brush you are using now.

If the bristles are splayed outwards within a few weeks of opening it, you are pressing too hard. A brush used with correct pressure keeps its shape for most of its three months. Other tells: your gums are sore after brushing rather than before, or one side of your mouth has visibly more gumline wear than the other — usually the side opposite your writing hand, because that is where the brush is easier to bear down on.

Manual or electric?

Either works if used properly. On average, electric brushes — particularly oscillating-rotating types — remove somewhat more plaque, and the honest reason is usually that the timer makes people brush for the full two minutes and the pressure sensor stops them scrubbing.

A well-used manual brush beats a badly-used electric one. If you are already brushing well, an electric brush is a modest improvement, not a transformation. If you press too hard or rush, it may genuinely help.

Replace the brush or head every three months, or sooner once the bristles splay. A splayed brush is not cleaning the parts you think it is. Replace it after being unwell, too.

We have a longer comparison, with the research behind it, at manual vs electric toothbrush.

Brushes for children

Extra-soft bristles, a small head, and — not a trivial point — one they will actually use. A brush they chose, in a colour or character they like, gets less resistance at bedtime.

Children lack the dexterity to brush effectively until around seven or eight. Until then, brush their teeth for them, or go over their attempt afterwards.

Tongue cleaning

You can clean your tongue with your toothbrush. A dedicated tongue scraper is not necessary, and neither is a brush with a textured pad on the back. Gentle brushing from back to front helps with bad breath, which is where most tongue bacteria live.

Toothpaste: fluoride is the point

Almost everything else on the box is marketing. The active ingredient that matters is fluoride, which strengthens enamel and can remineralise very early decay before it becomes a cavity.

Adults and children 6+ — standard fluoride toothpaste (around 1000–1500 ppm), a pea-sized amount
Children 18 months to 6 years — low-fluoride children's toothpaste, pea-sized, and supervise so it is spat out rather than swallowed
Under 18 months — no toothpaste; clean teeth with a soft brush and water

The amount matters because swallowing too much fluoride while adult teeth are forming can cause fluorosis — white flecking on the enamel. At recommended amounts fluoride toothpaste has a long record of safe use; the caution is about quantity in small children, not about fluoride itself.

Where we have advised something different for your child — higher risk, a particular history — follow what we told you.

Spit, do not rinse. Rinsing with water straight after brushing washes away the fluoride before it has done anything. Spit out the excess and leave it.

Higher-fluoride prescription toothpastes exist for people at high decay risk. Ask us whether you are one of them.

What the ingredients actually do

Ingredient	What it is for	Worth paying for?
Sodium fluoride / sodium monofluorophosphate	The decay-preventing active	Yes. This is the point
Stannous fluoride	Fluoride plus an effect on gum inflammation and sensitivity	Yes, if gums or sensitivity are your issue
Potassium nitrate	Calms the nerve response in sensitive teeth	Yes, if you have sensitivity. Needs weeks
Hydrated silica and other abrasives	Physically removes surface stain	Present in all pastes. More is not better
CPP-ACP (Recaldent)	Extra calcium and phosphate for remineralisation	Sometimes, on advice. Avoid with milk protein allergy
Sodium lauryl sulfate (SLS)	Makes it foam	No benefit. Aggravates ulcers in some people
Triclosan	Antibacterial	Largely withdrawn; not necessary
Charcoal	—	No. Abrasive, usually fluoride-free
Flavour, colour, sweeteners	Palatability	Only in that it makes children brush

The single number worth finding on the box is the fluoride ppm. It is usually in small print on the back.

The rest of the shelf

Sensitivity toothpastes — potassium nitrate or stannous fluoride formulations genuinely help many people, but take a few weeks of consistent use. Persistent sensitivity in one specific tooth is not a toothpaste problem; get it looked at.

Whitening toothpastes — these work by abrasion, removing surface stain. They do not change the underlying colour of your teeth, and the more abrasive ones can wear enamel with long-term use.

Charcoal toothpastes — abrasive, and most contain no fluoride. We would avoid them.

"Natural" or fluoride-free toothpastes — if it has no fluoride, it is doing very little for decay. Check the box; the absence is often not advertised.

Purple and colour-correcting toothpastes — an optical effect on the surface that lasts hours. Not a shade change, and no substitute for fluoride.

Toothpaste tablets and powders — fine if they contain fluoride at a sensible concentration. Many do not. Check.

Mouthwash — optional, and not a substitute for cleaning between teeth. Use it at a different time of day from brushing so it does not wash off your toothpaste fluoride.

Reading the box in ten seconds

Check	What you want
Fluoride content	~1000–1500 ppm for age 6+; low-fluoride for 18 months–6 years
Bristle firmness	Soft or extra-soft. Nothing else
Head size	Small enough to sit behind the last molar
Claims to ignore	"Whitening", "charcoal", "activated", "natural"
Claim worth noticing	Sensitivity formulations, if that is your problem
Not on the box	Whether you clean between your teeth — which matters more than all of it

Choosing what to clean between the teeth with

The part of the aisle most people walk past, and the part that matters most.

Tool	Best for	Note
Interdental brushes	Most adults with visible gaps	Get sized by us. The wrong size does nothing
String floss	Tight contacts, and most children	Technique matters — C-shape, both surfaces
PTFE tape	Anyone whose floss shreds	Slides through tight contacts
Floss picks	Back teeth; limited dexterity	Convenient; the fixed angle is a compromise
Floss threaders / superfloss	Under bridges, around braces	Nothing else reaches under a bridge
Water flosser	Braces, implants, arthritis	Good addition; not a full replacement

Most adults end up needing two of these, not one — typically interdental brushes for the back gaps and floss for the tight front ones.

One toothpaste for the whole family?

Usually not, and this is the most common mix-up we see.

A household with a toddler and adults needs two tubes: low-fluoride children's paste for the under-sixes, standard paste for everyone else. Keep them apart, because the practical failure is a three-year-old helping themselves to a pea of adult paste every night.

From six, everyone can use the same standard fluoride toothpaste. A separate sensitivity paste is worth having only for the person who needs it.

A shopping list, by household member

Who	Brush	Paste	Between teeth
Baby, first tooth to 18 months	Tiny soft brush	None — water	—
Toddler, 18 months–6	Small extra-soft, or electric from ~3	Low-fluoride, pea-sized	Floss picks once teeth touch
Child, 6–12	Soft, small head	Standard family paste	Floss picks; you supervise
Teenager	Soft, or electric with a timer	Standard paste	Floss or interdental brushes
Adult	Soft, or electric with sensor and timer	Standard; sensitivity paste if needed	Interdental brushes plus floss
Adult with braces	Electric, plus an interdental brush	Standard paste; ask about high-fluoride	Threader or superfloss, water flosser
Adult with implants or a bridge	Soft, gentle	Standard paste	Superfloss or threader, daily
Denture wearer	Denture brush	Denture cleaner, not toothpaste	Clean remaining teeth normally
Older adult with dry mouth	Soft, or electric	Ask about high-fluoride paste	Whatever is manageable

If cleaning is physically difficult

Arthritis, tremor, a hand injury or reduced grip change what is realistic, and the answer is equipment rather than effort.

An electric brush does the movement for you — the single biggest help
Thicken a manual handle with a foam grip, a bicycle handlebar grip, or a tennis ball pushed onto it
Floss holders or interdental brushes instead of string floss
A water flosser for anyone who cannot manage either
If a carer is brushing, standing behind and slightly above, with the head supported, gives far better access than facing the person

Tell us, and we will recommend around what is actually achievable rather than what is ideal.

Looking after the equipment

Rinse the brush thoroughly and store it upright, in the open air
Do not store brushes touching head to head in a shared holder
Never share a brush or a brush head, including between siblings and partners
Closed travel caps grow bacteria — dry the brush first
Keep toothpaste tubes capped and off the shower shelf
Replace every three months, and after illness

What matters more than any of it

Cleaning between your teeth. A brush cannot reach the surfaces between teeth, which is exactly where decay and gum disease commonly start. Floss or interdental brushes, once a day.

If you take one thing from this page, make it that. The difference between a good brush and an excellent one is small; the difference between cleaning between your teeth and not doing so is large.

Questions we are asked

Is an expensive toothpaste better? Not for decay. Check the fluoride content and ignore most of the rest.

Does whitening toothpaste work? It removes surface stain by abrasion. It does not lighten the natural colour of the tooth, and it will not change a crown, filling or veneer at all.

Is fluoride safe? At recommended amounts, yes, with a long record behind it. The care needed is about how much a small child swallows while adult teeth are forming, which is why the quantities above are specific.

Should I use mouthwash? Optional. If you do, use it at a different time from brushing, and do not let it replace cleaning between your teeth.

How often should I really replace my brush? Every three months, or sooner if the bristles splay — and after any illness.

My toothpaste stings my mouth. Often the SLS foaming agent, particularly in anyone prone to ulcers. An SLS-free paste is a cheap thing to try.

Can my child use my toothpaste? From six, yes. Before that, use a low-fluoride children's paste and keep the tubes separate.

Is a bamboo toothbrush better? The handle is more compostable; the nylon bristles are not. It cleans the same. Choose it for the reason you want to, not for your teeth.

Do I need a separate sensitivity toothpaste and a fluoride one? No — sensitivity toothpastes contain fluoride. Use it as your everyday paste rather than alongside another.

Victorian Dental Group is a general dental practice in Malvern East and holds no specialist registration. At a check-up we will size interdental brushes for your mouth and tell you which of the above is worth changing for you specifically.

Victorian Dental Group — 291 Wattletree Road, Malvern East VIC 3145 · (03) 9088 5808 · book online

General information only, not personal dental advice. See our disclaimer.

What sort of toothbrush should I buy?

Soft or extra-soft bristles, with a small head so it reaches the back teeth and behind the front ones. That applies to the whole family, not just children. Medium and firm brushes are widely sold but are rarely a good idea.

Do soft bristles clean as well?

Yes. Plaque is a soft film, not something that needs scrubbing off — technique and time matter far more than bristle stiffness. Firm bristles combined with heavy pressure wear away enamel near the gum line and contribute to gum recession, both of which are permanent. If your brush splays out within a few weeks, you are pressing too hard.

Electric or manual?

Either works if used properly. An electric brush — particularly an oscillating-rotating or sonic one — removes somewhat more plaque on average and helps people who press too hard or rush, and the built-in timer is genuinely useful. A manual brush used well for two minutes twice a day is perfectly adequate. The better brush is the one you will use properly.

How often should a toothbrush be replaced?

Every three months or so, and sooner if the bristles splay — a worn brush cleans poorly. Replace it after any illness, store it upright to air-dry rather than in a closed container, and do not share brushes, including between children.

What should I look for in a toothpaste?

Fluoride — that is the ingredient that matters, and nearly everything else is marketing. For adults and children from six years, a standard family fluoride toothpaste. From 18 months to six years, a pea-sized amount of low-fluoride children's toothpaste. Under 18 months, no toothpaste at all, just a soft brush and water.

Is fluoride safe?

Fluoride toothpaste used as directed is well established as safe and effective at preventing decay, and it is recommended by dental and health authorities in Australia. The reason for age-appropriate amounts is dose: young children tend to swallow toothpaste, and too much fluoride while the adult teeth are forming can cause fluorosis, which is usually faint white marks on the enamel. Use the right amount for the age, teach children to spit rather than swallow, and keep toothpaste out of reach.

Should I rinse after brushing?

No — spit out the excess and leave it at that. Rinsing with water washes away the fluoride that would otherwise keep working on the teeth. This small change is one of the easiest ways to get more benefit from the toothpaste you are already using.

Do whitening toothpastes work?

They remove surface stain by being mildly abrasive or by using polishing agents — they do not bleach the tooth or change its underlying colour, and they will not lighten fillings, crowns or veneers. Used daily over years, highly abrasive pastes can wear enamel, particularly on exposed root surfaces. If the colour of your teeth bothers you, ask about it at a check-up rather than buying progressively harsher products. Victorian Dental Group, 291 Wattletree Road, Malvern East VIC 3145 — (03) 9088 5808.